we can find upper case letter by using regular expression as well

private static void findUppercaseFirstLetterInString(String content) {
    Matcher m = Pattern
            .compile("([a-z])([a-z]*)", Pattern.CASE_INSENSITIVE).matcher(
                    content);
    System.out.println("Given input string : " + content);
    while (m.find()) {
        if (m.group(1).equals(m.group(1).toUpperCase())) {
            System.out.println("First Letter Upper case match found :"
                    + m.group());
        }
    }
}

for detailed example . please visit http://www.onlinecodegeek.com/2015/09/how-to-determines-if-string-starts-with.html

Another solution might look like this,

char arr[] = "mom";
std::cout << "hi " << std::string(arr);

which avoids using an extra variable.

import java.util.Scanner;

class SwiCas {

    public static void main(String as[]) {   
        Scanner s= new Scanner(System.in);

        char a=s.next().charAt(0);//this line shows how to take character input in java

        switch(a) {    
            case 'a':
                System.out.println("Vowel....");   
                break;    
            case 'e':
                System.out.println("Vowel....");   
                break;   
            case 'i':
                System.out.println("Vowel....");   
                break;
            case 'o':
                System.out.println("Vowel....");    
                break;    
            case 'u':
                System.out.println("Vowel....");   
                break;    
            case 'A':
                System.out.println("Vowel....");    
                break;    
            case 'E':
                System.out.println("Vowel....");  
                break;    
            case 'I':
                System.out.println("Vowel....");    
                break;    
            case 'O':
                System.out.println("Vowel....");    
                break;   
            case 'U':
                System.out.println("Vowel....");    
                break;    
            default:    
                System.out.println("Consonants....");
        }
    }
}

C99 standard on c >= '0' && c <= '9'

c >= '0' && c <= '9' (mentioned in another answer) works because C99 N1256 standard draft 5.2.1 "Character sets" says:

In both the source and execution basic character sets, the value of each character after 0 in the above list of decimal digits shall be one greater than the value of the previous.

ASCII is not guaranteed however.

You can use the following code.

main()
{
    int i = 0,j=0,count[26]={0};
    char ch = 97;
    char string[100]="Hello how are you buddy ?";
    for (i = 0; i < 100; i++)
    {
        for(j=0;j<26;j++)
            {
            if (tolower(string[i]) == (ch+j))
                {
                    count[j]++;
                }
        }
    }
    for(j=0;j<26;j++)
        {

            printf("\n%c -> %d",97+j,count[j]);

    }

}

Hope this helps.

You want

strchr (const char *s, int c)

If the character c is in the string s it returns a pointer to the location in s. Otherwise it returns NULL. So just use your list of invalid characters as the string.

The ASCII table is arranged so that the value of the character '9' is nine greater than the value of '0'; the value of the character '8' is eight greater than the value of '0'; and so on.

So you can get the int value of a decimal digit char by subtracting '0'.

char x = '9';
int y = x - '0'; // gives the int value 9

This might help, I used to fi my files like this: http://security102.blogspot.ru/2010/04/findreplace-of-nul-objects-in-notepad.html

Basically you need to replace \x00 characters with regular expressions

Try This

char x = '9'; // '9' = ASCII 57

int b = x - '0'; //That is '9' - '0' = 57 - 48 = 9

If Character.isLetter(ch) looks a bit wordy/ugly you can use a static import.

import static java.lang.Character.*;


if(isLetter(ch)) {

} else if(isDigit(ch)) {

} 

That's because your first code snippet is not performing initialization, but assignment:

char myarray[4] = "abc";  // Initialization.

myarray = "abc";          // Assignment.

And arrays are not directly assignable in C.

The name myarray actually resolves to the address of its first element (&myarray[0]), which is not an lvalue, and as such cannot be the target of an assignment.

char* charP = createStr();

Would be correct if your function was correct. Unfortunately you are returning a pointer to a local variable in the function which means that it is a pointer to undefined data as soon as the function returns. You need to use heap allocation like malloc for the string in your function in order for the pointer you return to have any meaning. Then you need to remember to free it later.

At first glance, your code will not compile. Since the nested if statement doesn't have any braces, it will consider the next line the code that it should execute. Also, you are comparing a char against a String, " ". Try comparing the values as chars instead. I think the correct syntax would be:

if(c == ' '){
   //do something here
}

But then again, I am not familiar with the "Equal" class

Use the .c_str() method for const char *.

You can use &mystring[0] to get a char * pointer, but there are a couple of gotcha's: you won't necessarily get a zero terminated string, and you won't be able to change the string's size. You especially have to be careful not to add characters past the end of the string or you'll get a buffer overrun (and probable crash).

There was no guarantee that all of the characters would be part of the same contiguous buffer until C++11, but in practice all known implementations of std::string worked that way anyway; see Does “&s[0]” point to contiguous characters in a std::string?.

Note that many string member functions will reallocate the internal buffer and invalidate any pointers you might have saved. Best to use them immediately and then discard.

Answering for C++ 14,

Yes, you can get the first character of a string simply by the following code snippet.

string s = "Happynewyear";
cout << s[0];

if you want to store the first character in a separate string,

string s = "Happynewyear";
string c = "";
c.push_back(s[0]);
cout << c;

The function name does not reflect the semantic of the function. In fact you do not append a character. You create a new character array that contains the original array plus the given character. So if you indeed need a function that appends a character to a character array I would write it the following way

bool AppendCharToCharArray( char *array, size_t n, char c )
{
    size_t sz = std::strlen( array );

    if ( sz + 1 < n ) 
    {
        array[sz] = c;
        array[sz + 1] = '\0';
    }       

    return ( sz + 1 < n );
} 

If you need a function that will contain a copy of the original array plus the given character then it could look the following way

char * CharArrayPlusChar( const char *array, char c )
{
    size_t sz = std::strlen( array );
    char *s = new char[sz + 2];

    std::strcpy( s, array );
    s[sz] = c;
    s[sz + 1] = '\0';

    return ( s );
} 

The difference here is that

char *s = "Hello world";

will place "Hello world" in the read-only parts of the memory, and making s a pointer to that makes any writing operation on this memory illegal.

While doing:

char s[] = "Hello world";

puts the literal string in read-only memory and copies the string to newly allocated memory on the stack. Thus making

s[0] = 'J';

legal.

The answer has already been given, but I'd like to share an issue that I discovered lately with Java standard libraries. While they take great care now of replacing password strings with char[] everywhere (which of course is a good thing), other security-critical data seems to be overlooked when it comes to clearing it from memory.

I'm thinking of e.g. the PrivateKey class. Consider a scenario where you would load a private RSA key from a PKCS#12 file, using it to perform some operation. Now in this case, sniffing the password alone wouldn't help you much as long as physical access to the key file is properly restricted. As an attacker, you would be much better off if you obtained the key directly instead of the password. The desired information can be leaked manifold, core dumps, a debugger session or swap files are just some examples.

And as it turns out, there is nothing that lets you clear the private information of a PrivateKey from memory, because there's no API that lets you wipe the bytes that form the corresponding information.

This is a bad situation, as this paper describes how this circumstance could be potentially exploited.

The OpenSSL library for example overwrites critical memory sections before private keys are freed. Since Java is garbage-collected, we would need explicit methods to wipe and invalidate private information for Java keys, which are to be applied immediately after using the key.

Your code is very vague and not understandable, but I can provide you with an alternative.

First of all, if you want temp to go through the whole string, you can do something like this:

char *temp;
for (temp = your_string; *temp; ++temp)
    /* do something with *temp */

The term *temp as the for condition simply checks whether you have reached the end of the string or not. If you have, *temp will be '\0' (NUL) and the for ends.

Now, inside the for, you want to find the bits that compose *temp. Let's say we print the bits:

for (as above)
{
    int bit_index;
    for (bit_index = 7; bit_index >= 0; --bit_index)
    {
        int bit = *temp >> bit_index & 1;
        printf("%d", bit);
    }
    printf("\n");
}

To make it a bit more generic, that is to convert any type to bits, you can change the bit_index = 7 to bit_index = sizeof(*temp)*8-1

do two \'s

"\\"

it's because it's an escape character

C strings are enclosed in double quotes:

const char *options[2][100];

options[0][0] = "test1";
options[1][0] = "test2";

Re-reading your question and comments though I'm guessing that what you really want to do is this:

const char *options[2] = { "test1", "test2" };

A char simply contains a single alphabet and a string has a full word or number of words woth having a escape sequence inserted in the end automatically to tell the compiler that string has been ended here.(0)

Incase of arrays, the base address (i.e. address of the array) is the address of the 1st element in the array. Also the array name acts as a pointer.

Consider a row of houses (each is an element in the array). To identify the row, you only need the 1st house address.You know each house is followed by the next (sequential).Getting the address of the 1st house, will also give you the address of the row.

Incase of string literals(character arrays defined at declaration), they are automatically appended by \0.

printf prints using the format specifier and the address provided. Since, you use %s it prints from the 1st address (incrementing the pointer using arithmetic) until '\0'

You can do the following:

String str = "abcd";
char arr[] = new char[len]; // len is the length of the array
arr = str.toCharArray();

I use :

int convertToInt(char a[1000]){
    int i = 0;
    int num = 0;
    while (a[i] != 0)
    {
        num =  (a[i] - '0')  + (num * 10);
        i++;
    }
    return num;;
}

I see two problems:

The pointer answer is a null pointer and you are trying to dereference it in scanf, this leads to undefined behavior.

You don't need a char pointer here. You can just use a char variable as:

char answer;
scanf(" %c",&answer);

Next to see if the read character is 'y' or 'Y' you should do:

if( answer == 'y' || answer == 'Y') {
  // user entered y or Y.
}

If you really need to use a char pointer you can do something like:

char var;
char *answer = &var; // make answer point to char variable var.
scanf (" %c", answer);
if( *answer == 'y' || *answer == 'Y') {

It won't automatically convert (thank god). You'll have to use the method c_str() to get the C string version.

std::string str = "string";
const char *cstr = str.c_str();

Note that it returns a const char *; you aren't allowed to change the C-style string returned by c_str(). If you want to process it you'll have to copy it first:

std::string str = "string";
char *cstr = new char[str.length() + 1];
strcpy(cstr, str.c_str());
// do stuff
delete [] cstr;

Or in modern C++:

std::vector<char> cstr(str.c_str(), str.c_str() + str.size() + 1);

Single quotes are denoting a char, double denote a string.

In Java, it is also the same.

You should use static_cast<char>(i) to cast the integer i to char.

reinterpret_cast should almost never be used, unless you want to cast one type into a fundamentally different type.

Also reinterpret_cast is machine dependent so safely using it requires complete understanding of the types as well as how the compiler implements the cast.

For more information about C++ casting see:

• When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
• http://www.cplusplus.com/doc/tutorial/typecasting/.

Another alternative

char[] c = { 'R', 'o', 'c', 'k', '-', '&', '-', 'R', 'o', 'l', 'l' };
string s = String.Concat( c );

Debug.Assert( s.Equals( "Rock-&-Roll" ) );

Why not just use atoi? For example:

char myarray[4] = {'-','1','2','3'};

int i = atoi(myarray);

printf("%d\n", i);

Gives me, as expected:

-123

Update: why not - the character array is not null terminated. Doh!

Petar Ivanov's answer to replace a character at a specific index in a string question

String are immutable in Java. You can't change them.

You need to create a new string with the character replaced.

String myName = "domanokz";
String newName = myName.substring(0,4)+'x'+myName.substring(5);

Or you can use a StringBuilder:

StringBuilder myName = new StringBuilder("domanokz");
myName.setCharAt(4, 'x');

System.out.println(myName);

array2 = array1;

is not supported in c. You have to use functions like strcpy() to do it.

I am converting Char Array to String

Char[] CharArray={ 'A', 'B', 'C'};
String text = String.copyValueOf(CharArray);

The problem with .Substring(,) is, that you need to be sure that the given string has at least the length of the asked number of characters, otherwise an ArgumentOutOfRangeException will be thrown.

Solution 1 (using 'Substring'):

var firstFive = stringValue != null ? 
                   stringValue.Substring(0, stringValue.Length >= 5 ? 5 : stringValue.Length) :
                   null;

The drawback of using .Substring( is that you'll need to check the length of the given string.

Solution 2 (using 'Take'):

var firstFive = stringValue != null ? 
                    string.Join("", stringValue.Take(5)) : 
                    null;

Using 'Take' will prevent that you need to check the length of the given string.

Unfortunately Java does not make String implement Iterable<Character>. This could easily be done. There is StringCharacterIterator but that doesn't even implement Iterator... So make your own:

public class CharSequenceCharacterIterable implements Iterable<Character> {
    private CharSequence cs;

    public CharSequenceCharacterIterable(CharSequence cs) {
        this.cs = cs;
    }

    @Override
    public Iterator<Character> iterator() {
        return new Iterator<Character>() {
            private int index = 0;

            @Override
            public boolean hasNext() {
                return index < cs.length();
            }

            @Override
            public Character next() {
                return cs.charAt(index++);
            }
        };
    }
}

Now you can (somewhat) easily run for (char c : new CharSequenceCharacterIterable("xyz"))...

The type of expression

" quickscan.exe resolution 300 selectscanner jpg showui showprogress filename '"+name+".jpg'"

is std::string. However function system has declaration

int system(const char *s);

that is it accepts an argumnet of type const char *

There is no conversion operator that would convert implicitly an object of type std::string to object of type const char *.

Nevertheless class std::string has two functions that do this conversion explicitly. They are c_str() and data() (the last can be used only with compiler that supports C++11)

So you can write

string name = "john";

system( (" quickscan.exe resolution 300 selectscanner jpg showui showprogress filename '"+name+".jpg'").c_str() );

There is no need to use an intermediate variable for the expression.

Random ran = new Random();
int top = 3;
char data = ' ';
String dat = "";

for (int i=0; i<=top; i++) {
  data = (char)(ran.nextInt(25)+97);
  dat = data + dat;
}

System.out.println(dat);

Well, I'm not sure to understand your question...

In C, Char[] and Char* are the same thing.

Edit : thanks for this interesting link.

Use:

string str = "Hello";
char[] characters = str.ToCharArray();

If you have a single character string, You can also try

string str = "A";
char character = char.Parse(str);    

//OR 
string str = "A";
char character = str.ToCharArray()[0];

You can declare like one of the below options:

char data[] = "Testing String";

or

const char* data = "Testing String";

or

char* data = (char*) "Testing String";

std::string str(buffer, buffer + length);

Or, if the string already exists:

str.assign(buffer, buffer + length);

Edit: I'm still not completely sure I understand the question. But if it's something like what JoshG is suggesting, that you want up to length characters, or until a null terminator, whichever comes first, then you can use this:

std::string str(buffer, std::find(buffer, buffer + length, '\0'));

Try Character.getNumericValue(char).

String element = "el5";
int x = Character.getNumericValue(element.charAt(2));
System.out.println("x=" + x);

produces:

x=5

The nice thing about getNumericValue(char) is that it also works with strings like "el?" and "el?" where ? and ? are the digits 5 in Eastern Arabic and Hindi/Sanskrit respectively.

Nobody has answered the real "question" here: you ARE converting int to char correctly; in the ASCII table a decimal value of 01 is "start of heading", a non-printing character. Try looking up an ASCII table and converting an int value between 33 and 7E; that will give you characters to look at.

Any problems with the following way of doing it?

int CharToInt(const char c)
{
    switch (c)
    {
    case '0':
        return 0;
    case '1':
        return 1;
    case '2':
        return 2;
    case '3':
        return 3;
    case '4':
        return 4;
    case '5':
        return 5;
    case '6':
        return 6;
    case '7':
        return 7;
    case '8':
        return 8;
    case '9':
        return 9;
    default:
        return 0;
    }
}

lvalue means "left value" -- it should be assignable. You cannot change the value of text since it is an array, not a pointer.

Either declare it as char pointer (in this case it's better to declare it as const char*):

const char *text;
if(number == 2) 
    text = "awesome"; 
else 
    text = "you fail";

Or use strcpy:

char text[60];
if(number == 2) 
    strcpy(text, "awesome"); 
else 
    strcpy(text, "you fail");

No, you're creating an array, but there's a big difference:

char *string = "Some CONSTANT string";
printf("%c\n", string[1]);//prints o
string[1] = 'v';//INVALID!!

The array is created in a read only part of memory, so you can't edit the value through the pointer, whereas:

char string[] = "Some string";

creates the same, read only, constant string, and copies it to the stack array. That's why:

string[1] = 'v';

Is valid in the latter case.
If you write:

char string[] = {"some", " string"};

the compiler should complain, because you're constructing an array of char arrays (or char pointers), and assigning it to an array of chars. Those types don't match up. Either write:

char string[] = {'s','o','m', 'e', ' ', 's', 't','r','i','n','g', '\o'};
//this is a bit silly, because it's the same as char string[] = "some string";
//or
char *string[] = {"some", " string"};//array of pointers to CONSTANT strings
//or
char string[][10] = {"some", " string"};

Where the last version gives you an array of strings (arrays of chars) that you actually can edit...

String text = String.copyValueOf(data);

or

String text = String.valueOf(data);

is arguably better (encapsulates the new String call).

To much code, you can use it like this:

#include<array>
#include<functional>

int main()
{
    std::array<int, 10> vec = { 1,2,3,4,5,6,7,8,9 };

    std::sort(std::begin(vec), 
              std::end(vec), 
              [](int a, int b) {return a > b; });

    for (auto item : vec)
      std::cout << item << " ";

    return 0;
}

Replace "vec" with your class and that's it.

This also works

SELECT TRANSLATE(STRING_WITH_NL_CR, CHAR(10) || CHAR(13), '  ') FROM DUAL;

I'd like to give a small addition to the existing answers. You get the same "Unclosed Character Literal error", if you give value to a char with incorrect unicode form. Like when you write:

char HI = '\3072';

You have to use the correct form which is:

char HI = '\u3072';

If you want to escape user input in a variable you can do like below within SQL

  Set @userinput = replace(@userinput,'''','''''')

The @userinput will be now escaped with an extra single quote for every occurance of a quote

You can try in this way. I had applied this in my case.

#include<stdio.h>

struct name
{

  char first[20];

  char last[30];

};

//globally

// struct name sara={"Sara","Black"};

int main()

 {

//locally

struct name sara={"Sara","Black"};


printf("%s",sara.first);

printf("%s",sara.last);

}

Provides a space before %c conversion specifier so that compiler will ignore white spaces. The program may be written as below:

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char ch;
    printf("Enter one char");
    scanf(" %c", &ch); /*Space is given before %c*/
    printf("%c\n",ch);
return 0;
}

What about:

//true if it doesn't contain letters
bool result = hello.Any(x => !char.IsLetter(x));

Just use...

Scanner keyboard = new Scanner(System.in);
char c = keyboard.next().charAt(0);

This gets the first character of the next input.

Safest & simplest is to just loop;

Dim buff() As String
ReDim buff(Len(my_string) - 1)
For i = 1 To Len(my_string)
    buff(i - 1) = Mid$(my_string, i, 1)
Next

If your guaranteed to use ansi characters only you can;

Dim buff() As String
buff = Split(StrConv(my_string, vbUnicode), Chr$(0))
ReDim Preserve buff(UBound(buff) - 1)

The standard function atoi() will likely do what you want.

A simple example using "atoi":

#include <unistd.h>

int main(int argc, char *argv[])
{
    int useconds = atoi(argv[1]); 
    usleep(useconds);
}

you need to use backslash before ". like \"

From the doc here you can see that

A character preceded by a backslash ( \ ) is an escape sequence and has special meaning to the compiler.

and " (double quote) is a escacpe sequence

When an escape sequence is encountered in a print statement, the compiler interprets it accordingly. For example, if you want to put quotes within quotes you must use the escape sequence, \", on the interior quotes. To print the sentence

She said "Hello!" to me.

you would write

System.out.println("She said \"Hello!\" to me.");

To note it in the languages you mentioned:

Java:

String str = new String("Hello");

Python:

str = "Hello"

Both Java and Python have the concept of a "string", C does not have the concept of a "string". C has character arrays which can come in "read only" or manipulatable.

C:

char * str = "Hello";  // the string "Hello\0" is pointed to by the character pointer
                       // str. This "string" can not be modified (read only)

or

char str[] = "Hello";  // the characters: 'H''e''l''l''o''\0' have been copied to the 
                       // array str. You can change them via: str[x] = 't'

A character array is a sequence of contiguous characters with a unique sentinel character at the end (normally a NULL terminator '\0'). Note that the sentinel character is auto-magically appended for you in the cases above.

public boolean isPalindrome(String abc){
    if(abc != null && abc.length() > 0){
        char[] arr = abc.toCharArray();
        for (int i = 0; i < arr.length/2; i++) {
            if(arr[i] != arr[arr.length - 1 - i]){
                return false;
            }
        }
        return true;
    }
    return false;
}

My preferred method:

if (*ptr == 0) // empty string

Probably more common:

if (strlen(ptr) == 0) // empty string

It's the remainder operator and is used to get the remainder after integer division. Lots of languages have it. For example:

10 % 3 // = 1 ; because 3 * 3 gets you 9, and 10 - 9 is 1.

Apparently it is not the same as the modulo operator entirely.

Use atoi() from <stdlib.h>

http://linux.die.net/man/3/atoi

Or, write your own atoi() function which will convert char* to int

int a2i(const char *s)
{
  int sign=1;
  if(*s == '-'){
    sign = -1;
    s++;
  }
  int num=0;
  while(*s){
    num=((*s)-'0')+num*10;
    s++;   
  }
  return num*sign;
}

I think it is '\u00000' or just '' rather than '\u0000' (The 1st one has 5 zeros while the last one has four zeroes.)

From what I understand about your question, before passing the character into the switch statement, you can convert it to lowercase. So you don't have to worry about upper cases because they are automatically converted to lower case. For that you need to use the below function:

Character.toLowerCase(c);

Try this :

char c = '5' - '0';

#include<string.h>
#include<stdio.h>
int main()
{
    char input[16] = "abc,d";
    char *p;
    p = strtok(input, ",");

    if(p)
    {
    printf("%s\n", p);
    }
    p = strtok(NULL, ",");

    if(p)
           printf("%s\n", p);
    return 0;
}

you can look this program .First you should use the strtok(input, ",").input is the string you want to spilt.Then you use the strtok(NULL, ","). If the return value is true ,you can print the other group.

In Python 2.x, just use the ord and chr functions:

>>> ord('c')
99
>>> ord('c') + 1
100
>>> chr(ord('c') + 1)
'd'
>>> 

Python 3.x makes this more organized and interesting, due to its clear distinction between bytes and unicode. By default, a "string" is unicode, so the above works (ord receives Unicode chars and chr produces them).

But if you're interested in bytes (such as for processing some binary data stream), things are even simpler:

>>> bstr = bytes('abc', 'utf-8')
>>> bstr
b'abc'
>>> bstr[0]
97
>>> bytes([97, 98, 99])
b'abc'
>>> bytes([bstr[0] + 1, 98, 99])
b'bbc'

Why would you think setting a single element would clear the entire array? In C, especially, little ever happens without the programmer explicitly programming it. If you set the first element to zero (or any value), then you have done exactly that, and nothing more.

When initializing you can set an array to zero:

char mcd[40] = {0}; /* sets the whole array */

Otherwise, I don't know any technique other than memset, or something similar.

By "empty an array" if you mean reset to 0, then you can use bzero.

#include <strings.h>  
void bzero(void *s, size_t n);  

If you want to fill the array with some other default character then you may use memset function.

#include <string.h>  
void *memset(void *s, int c, size_t n);  

Use chr() and ord():

>>> chr(97)
'a'
>>> ord('a')
97

Your method will return a local stack variable that will fail badly. To return an array, create one outside the function, pass it by address into the function, then modify it, or create an array on the heap and return that variable. Both will work, but the first doesn't require any dynamic memory allocation to get it working correctly.

void returnArray(int size, char *retArray)
{
  // work directly with retArray or memcpy into it from elsewhere like
  // memcpy(retArray, localArray, size); 
}

#define ARRAY_SIZE 20

int main(void)
{
  char foo[ARRAY_SIZE];
  returnArray(ARRAY_SIZE, foo);
}

Additional to sll's solution: It's better to trim the string in case there are some blank(s) at the end.

strgroupids = strgroupids.Remove(strgroupids.Trim().Length - 1);

A char variable is actually an 8-bit integral value. It will have values from 0 to 255. These are ASCII codes. 0 stands for the C-null character, and 255 stands for an empty symbol.

So, when you write the following assignment:

char a = 'a'; 

It is the same thing as:

char a = 97;

So, you can compare two char variables using the >, <, ==, <=, >= operators:

char a = 'a';
char b = 'b';

if( a < b ) printf("%c is smaller than %c", a, b);
if( a > b ) printf("%c is smaller than %c", a, b);
if( a == b ) printf("%c is equal to %c", a, b);

The first visible character is '!' according to ASCII table.And the last one is '~' So "!file.doc" or "~file.doc' will be the top one depending your ranking order. You can check the ascii table here: http://www.asciitable.com/

Edit: This answer is based on the opinion of the author and not facts.

This will search and replace all non ASCII letters:

String resultString = subjectString.replaceAll("[^\\x00-\\x7F]", "");

The second method would almost certainly be the fastest way to test whether a null-terminated string is empty, since it involves one read and one comparison. There's certainly nothing wrong with this approach in this case, so you may as well use it.

The third method doesn't check whether a character array is empty; it ensures that a character array is empty.

Looks like niether is faster or slower

    public static void main(String arguments[]) {


        //Build a long string
        StringBuilder sb = new StringBuilder();
        for(int j = 0; j < 10000; j++) {
            sb.append("a really, really long string");
        }
        String str = sb.toString();
        for (int testscount = 0; testscount < 10; testscount ++) {


            //Test 1
            long start = System.currentTimeMillis();
            for(int c = 0; c < 10000000; c++) {
                for (int i = 0, n = str.length(); i < n; i++) {
                    char chr = str.charAt(i);
                    doSomethingWithChar(chr);//To trick JIT optimistaion
                }
            }

            System.out.println("1: " + (System.currentTimeMillis() - start));

            //Test 2
            start = System.currentTimeMillis();
            char[] chars = str.toCharArray();
            for(int c = 0; c < 10000000; c++) {
                for (int i = 0, n = chars.length; i < n; i++) {
                    char chr = chars[i];
                    doSomethingWithChar(chr);//To trick JIT optimistaion
                }
            }
            System.out.println("2: " + (System.currentTimeMillis() - start));
            System.out.println();
        }


    }


    public static void doSomethingWithChar(char chr) {
        int newInt = chr << 2;
    }

For long strings I'll chose the first one. Why copy around long strings? Documentations says:

public char[] toCharArray() Converts this string to a new character array.

Returns: a newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string.

//Edit 1

I've changed the test to trick JIT optimisation.

//Edit 2

Repeat test 10 times to let JVM warm up.

//Edit 3

Conclusions:

First of all str.toCharArray(); copies entire string in memory. It can be memory consuming for long strings. Method String.charAt( ) looks up char in char array inside String class checking index before. It looks like for short enough Strings first method (i.e. chatAt method) is a bit slower due to this index check. But if the String is long enough, copying whole char array gets slower, and the first method is faster. The longer the string is, the slower toCharArray performs. Try to change limit in for(int j = 0; j < 10000; j++) loop to see it. If we let JVM warm up code runs faster, but proportions are the same.

After all it's just micro-optimisation.

This is a function to directly convert hexadecimal containing char array to an integer which needs no extra library:

int hexadecimal2int(char *hdec) {
    int finalval = 0;
    while (*hdec) {
        
        int onebyte = *hdec++; 
        
        if (onebyte >= '0' && onebyte <= '9'){onebyte = onebyte - '0';}
        else if (onebyte >= 'a' && onebyte <='f') {onebyte = onebyte - 'a' + 10;}
        else if (onebyte >= 'A' && onebyte <='F') {onebyte = onebyte - 'A' + 10;}  
        
        finalval = (finalval << 4) | (onebyte & 0xF);
    }
    finalval = finalval - 524288;
    return finalval;
}

There are some great answers here but I wanted to point out the jvm is free to store a char value in any size space >= 2 bytes.

On many architectures there is a penalty for performing unaligned memory access so a char might easily be padded to 4 bytes. A volatile char might even be padded to the size of the CPU cache line to prevent false sharing. https://en.wikipedia.org/wiki/False_sharing

It might be non-intuitive to new Java programmers that a character array or a string is NOT simply multiple characters. You should learn and think about strings and arrays distinctly from "multiple characters".

I also want to point out that java characters are often misused. People don't realize they are writing code that won't properly handle codepoints over 16 bits in length.

You can use the Console API (which made its appearance in Java 6) as follows:

Console cons = System.console();
if(cons != null) {
  char c = (char) cons.reader().read();  // Checking for EOF omitted
  ...
}

If you just need a single line you don't even need to go through the reader object:

String s = cons.readLine();

A char can hold a single character only, a character literal is a single character in single quote, i.e. '&' - if you have more characters than one you want to use a string, for that you have to use double quotes:

case "&&": 

char *a = new char[10];

My question is that how can I get the length of a char *

It is very simply.:) It is enough to add only one statement

size_t N = 10;
char *a = new char[N];

Now you can get the size of the allocated array

std::cout << "The size is " << N << std::endl;

Many mentioned here C standard function std::strlen. But it does not return the actual size of a character array. It returns only the size of stored string literal.

The difference is the following. if to take your code snippet as an example

char a[] = "aaaaa";
int length = sizeof(a)/sizeof(char); // length=6

then std::strlen( a ) will return 5 instead of 6 as in your code.

So the conclusion is simple: if you need to dynamically allocate a character array consider usage of class std::string. It has methof size and its synonym length that allows to get the size of the array at any time.

For example

std::string s( "aaaaa" );

std::cout << s.length() << std::endl;

or

std::string s;
s.resize( 10 );

std::cout << s.length() << std::endl;

Inserting Space in emailId field after every 8 characters

public string BreakEmailId(string emailId) {
    string returnVal = string.Empty;
    if (emailId.Length > 8) {           
        for (int i = 0; i < emailId.Length; i += 8) {
            returnVal += emailId.Substring(i, 8) + " ";
        }
    }

    return returnVal;
}

Use malloc() when you don't know the amount of memory needed during compile time. In case if you have read-only strings then you can use const char* str = "something"; . Note that the string is most probably be stored in a read-only memory location and you'll not be able to modify it. On the other hand if you know the string during compiler time then you can do something like: char str[10]; strcpy(str, "Something"); Here the memory is allocated from stack and you will be able to modify the str. Third case is allocating using malloc. Lets say you don'r know the length of the string during compile time. Then you can do char* str = malloc(requiredMem); strcpy(str, "Something"); free(str);

This is not how you initialize an array, but for:

1. The first declaration:

   char buf[10] = "";
   

   is equivalent to

   char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
   

2. The second declaration:

   char buf[10] = " ";
   

   is equivalent to

   char buf[10] = {' ', 0, 0, 0, 0, 0, 0, 0, 0, 0};
   

3. The third declaration:

   char buf[10] = "a";
   

   is equivalent to

   char buf[10] = {'a', 0, 0, 0, 0, 0, 0, 0, 0, 0};
   

As you can see, no random content: if there are fewer initializers, the remaining of the array is initialized with 0. This the case even if the array is declared inside a function.

You can convert it to char* if you don't need a modifiable string by using:

(char*) yourString.c_str();

This would be very useful when you want to publish a String variable via MQTT in arduino.

unsigned char takes only positive values....like 0 to 255

where as

signed char takes both positive and negative values....like -128 to +127

String someString = "" + c;
char c = someString.charAt(0);

If you know all your 21 characters in advance you can write them all as one String and then check it like this:

char wanted = 'x';
String candidates = "abcdefghij...";
boolean hit = candidates.indexOf(wanted) >= 0;

I think this is the shortest way.

A code like that should work:

int i = 0;
char string[256], c;
while(i < 256 - 1 && (c = fgetc(fp) != EOF)) //Keep space for the final \0
{
    string[i++] = c;
}
string[i] = '\0';

Array notation and pointer arithmetic can be used interchangeably in C/C++ (this is not true for ALL the cases but by the time you get there, you will find the cases yourself). So although str is a pointer, you can use it as if it were an array like so:

char char_E = str[1];
char char_L1 = str[2];
char char_O = str[4];

...and so on. What you could also do is "add" 1 to the value of the pointer to a character str which will then point to the second character in the string. Then you can simply do:

str = str + 1; // makes it point to 'E' now
char myChar =  *str;

I hope this helps.

You can apply the .toUpperCase() directly on String variables or as an attribute to text fields. Ex: -

String str;
TextView txt;

str.toUpperCase();// will change it to all upper case OR
txt.append(str.toUpperCase());
txt.setText(str.toUpperCase());

Here is the example:

var charCode = "a".charCodeAt(0);_x000D_
console.log(charCode);

Or if you have longer strings:

var string = "Some string";_x000D_
_x000D_
for (var i = 0; i < string.length; i++) {_x000D_
  console.log(string.charCodeAt(i));_x000D_
}

String.charCodeAt(x) method will return ASCII character code at a given position.

Easiest way to blanket remove a character from string is to Trim it

cl = cl.Trim(' ');

Removes all of the spaces in a string

Compare its value. It should be between the value of 'a' and 'z', 'A' and 'Z', '0' and '9'

You can use strstr. Example code here.

Note that the returned result is not null terminated.

During runtime your application is unable to find the jar.

Taken from this answer by Jared:

It is important to keep two different exceptions straight in our head in this case:

1. java.lang.ClassNotFoundException This an Exception, it indicates that the class was not found on the classpath. This indicates that we were trying to load the class definition, and the class did not exist on the classpath.

2. java.lang.NoClassDefFoundError This is Error, it indicates that the JVM looked in its internal class definition data structure for the definition of a class and did not find it. This is different than saying that it could not be loaded from the classpath. Usually this indicates that we previously attempted to load a class from the classpath, but it failed for some reason - now we're trying again, but we're not even going to try to load it, because we failed loading it earlier. The earlier failure could be a ClassNotFoundException or an ExceptionInInitializerError (indicating a failure in the static initialization block) or any number of other problems. The point is, a NoClassDefFoundError is not necessarily a classpath problem.

for similarities and differences

Move your row before <div class="container marketing"> and wrap it with a new container, because current container width is 1170px (not 100%):

<div class='hero'>
  <div class="row">
   ...
  </div>
</div>

CSS:

.hero {
  background-color: #2ba6cb;
  padding: 0 90px;
}

The simplest way is to iterate through source and destination lists one by one like this:

List<String> newAddedElementsList = new ArrayList<String>();
List<String> removedElementsList = new ArrayList<String>();
for(String ele : sourceList){
    if(destinationList.contains(ele)){
        continue;
    }else{
        removedElementsList.add(ele);
    }
}
for(String ele : destinationList){
    if(sourceList.contains(ele)){
        continue;
    }else{
        newAddedElementsList.add(ele);
    }
}

Though it might not be very efficient if your source and destination lists have many elements but surely its simpler.

the message means you are doing another insert with the same combination of columns that are part of the IDX_STOCK_PRODUCT, which seams to be defined as UNIQUE. If it is so, it doesn't allow to enter same combination (it seems like it consists of two fields) twice.

If you are inserting records, make sure you are picking brand new record id or that the combination of record id and the other column is unique.

Without detailed table structure and your code, we can hardly guess whats going wrong.

Feel free to use this how ever you like.

/*
 * The extendStrArray() method will takes a number "n" and
 * a String Array "strArray" and will return a new array
 * containing 'n' new positions. This new returned array
 * can then be assigned to a new array, or the existing
 * one to "extend" it, it contain the old value in the 
 * new array with the addition n empty positions.
 */
private String[] extendStrArray(int n, String[] strArray){
    String[] old_str_array = strArray;
    String[] new_str_array = new String[(old_str_array.length + n)];
    for(int i = 0; i < old_str_array.length; i++ ){
        new_str_array[i] = old_str_array[i];
    }//end for loop

    return new_str_array;

}//end extendStrArray()

Basically I would use it like this:

String[] students = {"Tom", "Jeff", "Ashley", "Mary"};
// 4 new students enter the class so we need to extend the string array
students = extendStrArray(4, students); //this will effectively add 4 new empty positions to the "students" array.

Some workaround solutions are:

1. Split up IN clause

Split IN clause to multiple IN clauses where literals are less than 1000 and combine them using OR clauses:

Split the original "WHERE" clause from one "IN" condition to several "IN" condition:

Select id from x where id in (1, 2, ..., 1000,…,1500);

To:

Select id from x where id in (1, 2, ..., 999) OR id in (1000,...,1500);

2. Use tuples

The limit of 1000 applies to sets of single items: (x) IN ((1), (2), (3), ...). There is no limit if the sets contain two or more items: (x, 0) IN ((1,0), (2,0), (3,0), ...):

Select id from x where (x.id, 0) IN ((1, 0), (2, 0), (3, 0),.....(n, 0));

3. Use temporary table

Select id from x where id in (select id from <temporary-table>);

Do you have enabled FusionLog?

My VisualStudio was very slow to start, open solution and load symbols when start debugging. It was slow only on my machine, but not on other machines.

FusionLog writes tons of log stuff to disk. Just disabling it on RegEdit solved everything, on my case.

This is the FusionLog key on registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion

Check ForceLog value (1 enabled, 0 disabled).

If you want to permanently ignore these files, a simple way to add them to .gitignore is:

1. Change to the root of the git tree.
2. git ls-files --others --exclude-standard >> .gitignore

This will enumerate all files inside untracked directories, which may or may not be what you want.

Scenario 1

In client application (application is not web application, e.g may be swing app)

private static ApplicationContext context = new  ClassPathXmlApplicationContext("test-client.xml");

context.getBean(name);

No need of web.xml. ApplicationContext as container for getting bean service. No need for web server container. In test-client.xml there can be Simple bean with no remoting, bean with remoting.

Conclusion: In Scenario 1 applicationContext and DispatcherServlet are not related.

Scenario 2

In a server application (application deployed in server e.g Tomcat). Accessed service via remoting from client program (e.g Swing app)

Define listener in web.xml

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

At server startup ContextLoaderListener instantiates beans defined in applicationContext.xml.

Assuming you have defined the following in applicationContext.xml:

<import resource="test1.xml" />
<import resource="test2.xml" />
<import resource="test3.xml" />
<import resource="test4.xml" />

The beans are instantiated from all four configuration files test1.xml, test2.xml, test3.xml, test4.xml.

Conclusion: In Scenario 2 applicationContext and DispatcherServlet are not related.

Scenario 3

In a web application with spring MVC.

In web.xml define:

<servlet>
    <servlet-name>springweb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    
</servlet>

<servlet-mapping>
    <servlet-name>springweb</servlet-name>
    <url-pattern>*.action</url-pattern>
</servlet-mapping>

When Tomcat starts, beans defined in springweb-servlet.xml are instantiated. DispatcherServlet extends FrameworkServlet. In FrameworkServlet bean instantiation takes place for springweb . In our case springweb is FrameworkServlet.

Conclusion: In Scenario 3 applicationContext and DispatcherServlet are not related.

Scenario 4

In web application with spring MVC. springweb-servlet.xml for servlet and applicationContext.xml for accessing the business service within the server program or for accessing DB service in another server program.

In web.xml the following are defined:

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
    <servlet-name>springweb</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        
</servlet>

<servlet-mapping>
    <servlet-name>springweb</servlet-name>
    <url-pattern>*.action</url-pattern>
</servlet-mapping>

At server startup, ContextLoaderListener instantiates beans defined in applicationContext.xml; assuming you have declared herein:

<import resource="test1.xml" />
<import resource="test2.xml" />
<import resource="test3.xml" />
<import resource="test4.xml" />

The beans are all instantiated from all four test1.xml, test2.xml, test3.xml, test4.xml. After the completion of bean instantiation defined in applicationContext.xml, beans defined in springweb-servlet.xml are instantiated.

So the instantiation order is: the root (application context), then FrameworkServlet.

Now it should be clear why they are important in which scenario.

I had a similar problem but it had to do with the structure and class of the object. I would check how dih_y2$MemberID is formatted.

Your selector is looking for any descendants of a checkbox element that have a class of .myClass.

Try this instead:

$("input.myClass:checkbox")

Check it out in action.

I also tested this:

$("input:checkbox.myClass")

And it will also work properly. In my humble opinion this syntax really looks rather ugly, as most of the time I expect : style selectors to come last. As I said, though, either one will work.

Alternatively to usleep(), which is not defined in POSIX 2008 (though it was defined up to POSIX 2004, and it is evidently available on Linux and other platforms with a history of POSIX compliance), the POSIX 2008 standard defines nanosleep():

nanosleep - high resolution sleep

#include <time.h>
int nanosleep(const struct timespec *rqtp, struct timespec *rmtp);

The nanosleep() function shall cause the current thread to be suspended from execution until either the time interval specified by the rqtp argument has elapsed or a signal is delivered to the calling thread, and its action is to invoke a signal-catching function or to terminate the process. The suspension time may be longer than requested because the argument value is rounded up to an integer multiple of the sleep resolution or because of the scheduling of other activity by the system. But, except for the case of being interrupted by a signal, the suspension time shall not be less than the time specified by rqtp, as measured by the system clock CLOCK_REALTIME.

The use of the nanosleep() function has no effect on the action or blockage of any signal.

Here is an approach using str.slice(0, -n). Where n is the number of characters you want to truncate.

var str = 1437203995000;_x000D_
str = str.toString();_x000D_
console.log("Original data: ",str);_x000D_
str = str.slice(0, -3);_x000D_
str = parseInt(str);_x000D_
console.log("After truncate: ",str);

I recently had this issue and I ran 'depends.exe' on the dll in question. It showed me that the dll was compiled in x86 while some of the dependencys were compiled in x64.

If you are still having troubles I would recommend using depends.exe.

This may also can help

input="inputtext"
output="outputtext"
sed "s/$input/${output}/" inputfile > outputfile

Here's a simple way I came up with that doesn't involve unsafe code or pinning the object. Also works in reverse (object from address):

public static class AddressHelper
{
    private static object mutualObject;
    private static ObjectReinterpreter reinterpreter;

    static AddressHelper()
    {
        AddressHelper.mutualObject = new object();
        AddressHelper.reinterpreter = new ObjectReinterpreter();
        AddressHelper.reinterpreter.AsObject = new ObjectWrapper();
    }

    public static IntPtr GetAddress(object obj)
    {
        lock (AddressHelper.mutualObject)
        {
            AddressHelper.reinterpreter.AsObject.Object = obj;
            IntPtr address = AddressHelper.reinterpreter.AsIntPtr.Value;
            AddressHelper.reinterpreter.AsObject.Object = null;
            return address;
        }
    }

    public static T GetInstance<T>(IntPtr address)
    {
        lock (AddressHelper.mutualObject)
        {
            AddressHelper.reinterpreter.AsIntPtr.Value = address;
            return (T)AddressHelper.reinterpreter.AsObject.Object;
        }
    }

    // I bet you thought C# was type-safe.
    [StructLayout(LayoutKind.Explicit)]
    private struct ObjectReinterpreter
    {
        [FieldOffset(0)] public ObjectWrapper AsObject;
        [FieldOffset(0)] public IntPtrWrapper AsIntPtr;
    }

    private class ObjectWrapper
    {
        public object Object;
    }

    private class IntPtrWrapper
    {
        public IntPtr Value;
    }
}

Found this while Googling. The second post makes a point about the different phases of JSF, which might be causing your error message to become lost. Also, try null in place of "newPassword" because you do not have any object with the id newPassword.

In Access, you will probably find a Join is quicker unless your tables are very small:

SELECT DISTINCT Table1.Column1
FROM Table1 
LEFT JOIN Table2
ON Table1.Column1 = Table2.Column1  
WHERE Table2.Column1 Is Null

This will exclude from the list all records with a match in Table2.

As Dennis says, you can't control how the browser chooses to handle target=_blank.

If you're wondering about the inconsistent behavior, probably it's pop-up blocking. Many browsers will forbid new windows from being opened apropos of nothing, but will allow new windows to be spawned as the eventual result of a mouse-click event.

An alternative could be to use the new JSON extension for SQLite. I've only just come across this myself: https://www.sqlite.org/json1.html This would allow you to perform a certain level of querying the stored JSON. If you used VARCHAR or TEXT to store a JSON string you would have no ability to query it. This is a great article showing its usage (in python) http://charlesleifer.com/blog/using-the-sqlite-json1-and-fts5-extensions-with-python/

I have been looking into the same problem! I think your problem is related to where you identify the variable that you use to populate the ArrayList that you return. If you define it inside the loop, then it will always reference the last row in the table in the database. In order to avoid this, you have to identify it outside the loop:

String name;
if (cursor.moveToFirst()) {

        while (cursor.isAfterLast() == false) {
            name = cursor.getString(cursor
                    .getColumnIndex(countyname));

            list.add(name);
            cursor.moveToNext();
        }
}

the htaccess solution

<filesmatch "\.(?i:doc|odf|pdf|cer|txt)$">
  Header set Content-Disposition attachment
</FilesMatch>

you can read this page: https://www.techmesto.com/force-files-to-download-using-htaccess/

Make 'maven.test.skip' as false in pom file, while building project test reource will come under test-classes.

<maven.test.skip>false</maven.test.skip>

Just use matrix:

matrix(vec,nrow = 7,ncol = 7)

One advantage of using matrix rather than simply altering the dimension attribute as Gavin points out, is that you can specify whether the matrix is filled by row or column using the byrow argument in matrix.

I just ran into a very similar issue. When compiling using Visual Studio 2010, the DLL file was included in the bin folder. But when compiling using MSBuild the third-party DLL file was not included.

Very frustrating. The way I solved it was to include the NuGet reference to the package in my web project even though I'm not using it directly there.

mapper.enable(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT);

My code work well just as the answer above. The reason is that the json from jackson is different with the json sent from controller.

String test1= mapper.writeValueAsString(result1);

And the json is like(which can be deserialized normally):

{"code":200,"message":"god","data":[{"nics":null,"status":null,"desktopOperatorType":null,"marker":null,"user_name":null,"user_group":null,"user_email":null,"product_id":null,"image_id":null,"computer_name":"AAAA","desktop_id":null,"created":null,"ip_address":null,"security_groups":null,"root_volume":null,"data_volumes":null,"availability_zone":null,"ou_name":null,"login_status":null,"desktop_ip":null,"ad_id":null},{"nics":null,"status":null,"desktopOperatorType":null,"marker":null,"user_name":null,"user_group":null,"user_email":null,"product_id":null,"image_id":null,"computer_name":"BBBB","desktop_id":null,"created":null,"ip_address":null,"security_groups":null,"root_volume":null,"data_volumes":null,"availability_zone":null,"ou_name":null,"login_status":null,"desktop_ip":null,"ad_id":null}]}

but the json send from the another service just like:

{"code":200,"message":"????????","data":[{"nics":"","status":"","metadata":"","desktopOperatorType":"","marker":"","user_name":"csrgzbsjy","user_group":"ADMINISTRATORS","user_email":"","product_id":"","image_id":"","computer_name":"B-jiegou-all-15","desktop_id":"6360ee29-eb82-416b-aab8-18ded887e8ff","created":"2018-11-12T07:45:15.000Z","ip_address":"192.168.2.215","security_groups":"","root_volume":"","data_volumes":"","availability_zone":"","ou_name":"","login_status":"","desktop_ip":"","ad_id":""},{"nics":"","status":"","metadata":"","desktopOperatorType":"","marker":"","user_name":"glory_2147","user_group":"ADMINISTRATORS","user_email":"","product_id":"","image_id":"","computer_name":"H-pkpm-all-357","desktop_id":"709164e4-d3e6-495d-9c1e-a7b82e30bc83","created":"2018-11-09T09:54:09.000Z","ip_address":"192.168.2.235","security_groups":"","root_volume":"","data_volumes":"","availability_zone":"","ou_name":"","login_status":"","desktop_ip":"","ad_id":""}]}

You can notice the difference when dealing with the param without initiation. Be careful

Why can't you simply mark what changes you want to have in a commit using "git add <file>" (or even "git add --interactive", or "git gui" which has option for interactive comitting), and then use "git commit" instead of "git commit -a"?

In your situation (for your example) it would be:

prompt> git add B
prompt> git commit

Only changes to file B would be comitted, and file A would be left "dirty", i.e. with those print statements in the working area version. When you want to remove those print statements, it would be enought to use

prompt> git reset A

or

prompt> git checkout HEAD -- A

to revert to comitted version (version from HEAD, i.e. "git show HEAD:A" version).

Yes, it's possible:

public void myMethod(int... numbers) { /* your code */ }

Servers sometimes compress their responses to save on bandwidth, when this happens, you need to decompress the response before attempting to read it. Fortunately, the .NET framework can do this automatically, however, we have to turn the setting on.

Here's an example of how you could achieve that.

string html = string.Empty;
string url = @"https://api.stackexchange.com/2.2/answers?order=desc&sort=activity&site=stackoverflow";

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.AutomaticDecompression = DecompressionMethods.GZip;

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
using (Stream stream = response.GetResponseStream())
using (StreamReader reader = new StreamReader(stream))
{
    html = reader.ReadToEnd();
}

Console.WriteLine(html);

GET

public string Get(string uri)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

    using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
    using(Stream stream = response.GetResponseStream())
    using(StreamReader reader = new StreamReader(stream))
    {
        return reader.ReadToEnd();
    }
}

GET async

public async Task<string> GetAsync(string uri)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;

    using(HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
    using(Stream stream = response.GetResponseStream())
    using(StreamReader reader = new StreamReader(stream))
    {
        return await reader.ReadToEndAsync();
    }
}

POST
Contains the parameter method in the event you wish to use other HTTP methods such as PUT, DELETE, ETC

public string Post(string uri, string data, string contentType, string method = "POST")
{
    byte[] dataBytes = Encoding.UTF8.GetBytes(data);

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
    request.ContentLength = dataBytes.Length;
    request.ContentType = contentType;
    request.Method = method;

    using(Stream requestBody = request.GetRequestStream())
    {
        requestBody.Write(dataBytes, 0, dataBytes.Length);
    }

    using(HttpWebResponse response = (HttpWebResponse)request.GetResponse())
    using(Stream stream = response.GetResponseStream())
    using(StreamReader reader = new StreamReader(stream))
    {
        return reader.ReadToEnd();
    }
}

    

POST async
Contains the parameter method in the event you wish to use other HTTP methods such as PUT, DELETE, ETC

public async Task<string> PostAsync(string uri, string data, string contentType, string method = "POST")
{
    byte[] dataBytes = Encoding.UTF8.GetBytes(data);

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
    request.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
    request.ContentLength = dataBytes.Length;
    request.ContentType = contentType;
    request.Method = method;

    using(Stream requestBody = request.GetRequestStream())
    {
        await requestBody.WriteAsync(dataBytes, 0, dataBytes.Length);
    }

    using(HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync())
    using(Stream stream = response.GetResponseStream())
    using(StreamReader reader = new StreamReader(stream))
    {
        return await reader.ReadToEndAsync();
    }
}

additionally to @franc's answer you can use this from sql interface:

select 
    prosrc
from pg_trigger, pg_proc
where
 pg_proc.oid=pg_trigger.tgfoid
 and pg_trigger.tgname like '<name>'

(taken from here: http://www.postgresql.org/message-id/Pine.BSF.4.10.10009140858080.28013-100000@megazone23.bigpanda.com)

Carriage return and line feed are also references to typewriters, in that the with a small push on the handle on the left side of the carriage (the place where the paper goes), the paper would rotate a small amount around the cylinder, advancing the document one line. If you had finished typing one line, and wanted to continue on to the next, you pushed harder, both advancing a line and sliding the carriage all the way to the right, then resuming typing left to right again as the carriage traveled with each keystroke. Needless to say, word-wrap was the default setting for all word processing of the era. P:D

So I found a solution. I created an angularJS service, we'll call it MyDataRepository and I created a module for it. I then serve up this javascript file from my server-side controller:

HTML:

<script src="path/myData.js"></script>

Server-side:

@RequestMapping(value="path/myData.js", method=RequestMethod.GET)
public ResponseEntity<String> getMyDataRepositoryJS()
{
    // Populate data that I need into a Map
    Map<String, String> myData = new HashMap<String,String>();
    ...
    // Use Jackson to convert it to JSON
    ObjectMapper mapper = new ObjectMapper();
    String myDataStr = mapper.writeValueAsString(myData);

    // Then create a String that is my javascript file
    String myJS = "'use strict';" +
    "(function() {" +
    "var myDataModule = angular.module('myApp.myData', []);" +
    "myDataModule.service('MyDataRepository', function() {" +
        "var myData = "+myDataStr+";" +
        "return {" +
            "getData: function () {" +
                "return myData;" +
            "}" +
        "}" +
    "});" +
    "})();"

    // Now send it to the client:
    HttpHeaders responseHeaders = new HttpHeaders();
    responseHeaders.add("Content-Type", "text/javascript");
    return new ResponseEntity<String>(myJS , responseHeaders, HttpStatus.OK);
}

I can then inject MyDataRepository where ever I need it:

someOtherModule.service('MyOtherService', function(MyDataRepository) {
    var myData = MyDataRepository.getData();
    // Do what you have to do...
}

This worked great for me, but I am open to any feedback if anyone has any. }

WHY

As mentioned by @Sheepy, the reason why it doesn't work is that java.util.logging.Logger has a root logger that defaults to Level.INFO, and the ConsoleHandler attached to that root logger also defaults to Level.INFO. Therefore, in order to see the FINE (, FINER or FINEST) output, you need to set the default value of the root logger and its ConsoleHandler to Level.FINE as follows:

Logger.getLogger("").setLevel(Level.FINE);
Logger.getLogger("").getHandlers()[0].setLevel(Level.FINE);

The problem of your Update (solution)

As mentioned by @mins, you will have the messages printed twice on the console for INFO and above: first by the anonymous logger, then by its parent, the root logger which also has a ConsoleHandler set to INFO by default. To disable the root logger, you need to add this line of code: logger.setUseParentHandlers(false);

There are other ways to prevent logs from being processed by default Console handler of the root logger mentioned by @Sheepy, e.g.:

Logger.getLogger("").getHandlers()[0].setLevel( Level.OFF );

But Logger.getLogger("").setLevel( Level.OFF ); won't work because it only blocks the message passed directly to the root logger, not the message comes from a child logger. To illustrate how the Logger Hierarchy works, I draw the following diagram:

public void setLevel(Level newLevel) set the log level specifying which message levels will be logged by this logger. Message levels lower than this value will be discarded. The level value Level.OFF can be used to turn off logging. If the new level is null, it means that this node should inherit its level from its nearest ancestor with a specific (non-null) level value.

This should work:

window.onload = function() {
  document.getElementById('about').className = 'expand';
};

Or if you're using jQuery:

$(function() {
  $('#about').addClass('expand');
});

I don't know why but for me the solution proposed by Marius Stanescu is breaking the specificity of col (a col-md-3 followed by a col-md-4 will take all of the twelve row)

I found another working solution :

.bottom-column 
{
   display: inline-block;
   vertical-align: middle;
   float: none;
}

It doesn't work as you expect because strip is character based. You need to do this instead:

foo = foo.replace(' ', '')[:-3].upper()

I'm pretty sure you can do explicit casting here.

foo f = (foo)value;

So long as you say the enum inherits(?) from int, which you have.

enum foo : int

EDIT Yes it turns out that by default, an enums underlying type is int. You can however use any integral type except char.

You can also cast from a value that's not in the enum, producing an invalid enum. I suspect this works by just changing the type of the reference and not actually changing the value in memory.

enum (C# Reference)
Enumeration Types (C# Programming Guide)

This seems to work for me.

var combindedString = new string(list.ToArray());

The function JSON.stringify will turn your json object into a string:

var jsonAsString = JSON.stringify(obj);

In case the browser does not implement it (IE6/IE7), use the JSON2.js script. It's safe as it uses the native implementation if it exists.

Oracle base has a good run down on this.

https://oracle-base.com/articles/misc/updates-based-on-queries

From this link - I used a modification of the above query which did not work for me (the answer from mathguy which uses rowid)

MERGE /*+ APPEND PARALLEL(8) */ INTO dest_table tt
USING source_table st
ON (tt.identifier = st.identifier)
WHEN MATCHED THEN
  UPDATE SET tt.number = st.number;

Here I have two tables: source and dest. They both have a varchar field in common and I am adding the source identify field (PK) into the dest table.

Are you hosting the site on iis? if so make sure the account your website runs under has access to local file system?

Straight from msdn .....

The Network Service account has Read and Execute permissions on the IIS server root folder by default. The IIS server root folder is named Wwwroot. This means that an ASP.NET application deployed inside the root folder already has Read and Execute permissions to its application folders. However, if your ASP.NET application needs to use files or folders in other locations, you must specifically enable access.

To provide access to an ASP.NET application running as Network Service, you must grant access to the Network Service account.

To grant read, write, and modify permissions to a specific file

• In Windows Explorer, locate and select the required file.
• Right-click the file, and then click Properties.
• In the Properties dialog box, click the Security tab.
• On the Security tab, examine the list of users. If the Network Service
• account is not listed, add it.
• In the Properties dialog box, click the Network Service user name, and in the Permissions for NETWORK SERVICE section, select the Read, Write, and Modify permissions.
• Click Apply, and then click OK.

Click here for more

Here is a solution using INDIRECT, which if you drag the formula, it will pick up different cells from the target sheet accordingly. It uses R1C1 notation and is not limited to working only on columns A-Z.

=INDIRECT("'"&$A$5&"'!R"&ROW()&"C"&COLUMN(),FALSE)

This version picks up the value from the target cell corresponding to the cell where the formula is placed. For example, if you place the formula in 'Summary'!B5 then it will pick up the value from 'SERVER-ONE'!B5, not 'SERVER-ONE'!G7 as specified in the original question. But you could easily add in offsets to the row and column to achieve the desired mapping in any case.

A better way in long run is to integrate Gradle in your project environment. Its a build tool for Java, and now being used a lot in the android development space.

You will need to make a .gradle file and list your library dependencies. Then, all you would need to do is import the project in IntelliJ using Gradle.

Cheers

.yaml is apparently the official extension, because some applications fail when using .yml. On the other hand I am not familiar with any applications which use YAML code, but fail with a .yaml extension.

I just stumbled across this, as I was used to writing .yml in Ansible and Docker Compose. Out of habit I used .yml when writing Netplan files which failed silently. I finally figured out my mistake. The author of a popular Ansible Galaxy role for Netplan makes the same assumption in his code:

- name: Capturing Existing Configurations
  find:
    paths: /etc/netplan
    patterns: "*.yml,*.yaml"
  register: _netplan_configs

Yet any files with a .yml extension get ignored by Netplan in the same way as files with a .bak extension. As Netplan is very quiet, and gives no feedback whatsoever on success, even with netplan apply --debug, a config such as 01-netcfg.yml will fail silently without any meaningful feedback.

This is not so helpful if you need to just know the month name for a given number (1 - 12), as the current day doesn't matter.

calendar.month_name[i]

or

calendar.month_abbr[i]

are more useful here.

Here is an example:

import calendar

for month_idx in range(1, 13):
    print (calendar.month_name[month_idx])
    print (calendar.month_abbr[month_idx])
    print ("")

Sample output:

January
Jan

February
Feb

March
Mar

...

Random r = new Random();
int i1 = r.nextInt(45 - 28) + 28;

This gives a random integer between 28 (inclusive) and 45 (exclusive), one of 28,29,...,43,44.

You can not "attach" a SASS/SCSS file to an HTML document.

SASS/SCSS is a CSS preprocessor that runs on the server and compiles to CSS code that your browser understands.

There are client-side alternatives to SASS that can be compiled in the browser using javascript such as LESS CSS, though I advise you compile to CSS for production use.

It's as simple as adding 2 lines of code to your HTML file.

<link rel="stylesheet/less" type="text/css" href="styles.less" />
<script src="less.js" type="text/javascript"></script>

Also, Given a DataFrame

data

as in your example, if you would like to extract column a and d only (e.i. the 1st and the 4th column), iloc mothod from the pandas dataframe is what you need and could be used very effectively. All you need to know is the index of the columns you would like to extract. For example:

>>> data.iloc[:,[0,3]]

will give you

          a         d
0  0.883283  0.100975
1  0.614313  0.221731
2  0.438963  0.224361
3  0.466078  0.703347
4  0.955285  0.114033
5  0.268443  0.416996
6  0.613241  0.327548
7  0.370784  0.359159
8  0.692708  0.659410
9  0.806624  0.875476

Check this out: http://www.codeproject.com/KB/dotnet/MethodName.aspx

You need to somehow convert each tbcourse object to an instance of course. For instance course could have a constructor that takes a tbcourse. You could then write the query like this:

var qry = from c in obj.tbCourses
          select new course(c);

List<course> lst = qry.ToList();

If you are in a po-up and you want to access the opening window, use window.opener. The easiest would be if you could load JQuery in the parent window as well:

window.opener.$("#serverMsg").html // this uses JQuery in the parent window

or you could use plain old document.getElementById to get the element, and then extend it using the jquery in your child window. The following should work (I haven't tested it, though):

element = window.opener.document.getElementById("serverMsg");
element = $(element);

If you are in an iframe or frameset and want to access the parent frame, use window.parent instead of window.opener.

According to the Same Origin Policy, all this works effortlessly only if both the child and the parent window are in the same domain.

There's a simple command built-in that will pull it:

rvm implode

This will remove the rvm/ directory and all the rubies built within it. In order to remove the final trace of rvm, you need to remove the rvm gem, too:

gem uninstall rvm

If you've made modifications to your PATH you might want to pull those, too. Check your .bashrc, .profile and .bash_profile files, among other things.

You may also have an /etc/rvmrc file, or one in your home directory ~/.rvmrc that may need to be removed as well.

Another option: when cell type is unknown at compile time and cell is formatted as Date Range.Value returns a desired DateTime object.

public static DateTime? GetAsDateTimeOrDefault(Range cell)
{
    object cellValue = cell.Value;
    if (cellValue is DateTime result)
    {
        return result;
    }
    return null;
}

var accounting = [];
var employees = {};

for(var i in someData) {

    var item = someData[i];

   accounting.push({ 
        "firstName" : item.firstName,
        "lastName"  : item.lastName,
        "age"       : item.age 
    });
}

employees.accounting = accounting;

A function like that without validating the enum is a trifle dangerous. I suggest using a switch statement. Another advantage is that this can be used for enums that have defined values, for example for flags where the values are 1,2,4,8,16 etc.

Also put all your enum strings together in one array:-

static const char * allEnums[] = {
    "Undefined",
    "apple",
    "orange"
    /* etc */
};

define the indices in a header file:-

#define ID_undefined       0
#define ID_fruit_apple     1
#define ID_fruit_orange    2
/* etc */

Doing this makes it easier to produce different versions, for example if you want to make international versions of your program with other languages.

Using a macro, also in the header file:-

#define CASE(type,val) case val: index = ID_##type##_##val; break;

Make a function with a switch statement, this should return a const char * because the strings static consts:-

const char * FruitString(enum fruit e){

    unsigned int index;

    switch(e){
        CASE(fruit, apple)
        CASE(fruit, orange)
        CASE(fruit, banana)
        /* etc */
        default: index = ID_undefined;
    }
    return allEnums[index];
}

If programming with Windows then the ID_ values can be resource values.

(If using C++ then all the functions can have the same name.

string EnumToString(fruit e);

)

Suppose that you have a JSON object like:

var example = {
    "prop1": "value1",
    "prop2": [ "value2_0", "value2_1"],
    "prop3": {
         "prop3_1": "value3_1"
    }
}

The wrong way to iterate through its 'properties':

function recursivelyIterateProperties(jsonObject) {
    for (var prop in Object.keys(jsonObject)) {
        console.log(prop);
        recursivelyIterateProperties(jsonObject[prop]);
    }
}

You might be surprised of seeing the console logging 0, 1, etc. when iterating through the properties of prop1 and prop2 and of prop3_1. Those objects are sequences, and the indexes of a sequence are properties of that object in Javascript.

A better way to recursively iterate through a JSON object properties would be to first check if that object is a sequence or not:

function recursivelyIterateProperties(jsonObject) {
    for (var prop in Object.keys(jsonObject)) {
        console.log(prop);
        if (!(typeof(jsonObject[prop]) === 'string')
            && !(jsonObject[prop] instanceof Array)) {
                recursivelyIterateProperties(jsonObject[prop]);

            }
     }
}

If you want to find properties inside of objects in arrays, then do the following:

function recursivelyIterateProperties(jsonObject) {

    if (jsonObject instanceof Array) {
        for (var i = 0; i < jsonObject.length; ++i) {
            recursivelyIterateProperties(jsonObject[i])
        }
    }
    else if (typeof(jsonObject) === 'object') {
        for (var prop in Object.keys(jsonObject)) {
            console.log(prop);
            if (!(typeof(jsonObject[prop]) === 'string')) {
                recursivelyIterateProperties(jsonObject[prop]);
            }
        }
    }
}

Run:

go mod init yellow

Then create a file yellow.go:

package yellow

func Mix(s string) string {
   return s + "Yellow"
}

Then create a file orange/orange.go:

package main
import "yellow"

func main() {
   s := yellow.Mix("Red")
   println(s)
}

Then build:

go build

https://golang.org/doc/code.html

The idea behind StandardScaler is that it will transform your data such that its distribution will have a mean value 0 and standard deviation of 1.
In case of multivariate data, this is done feature-wise (in other words independently for each column of the data).
Given the distribution of the data, each value in the dataset will have the mean value subtracted, and then divided by the standard deviation of the whole dataset (or feature in the multivariate case).

As far as I know component inheritance has not been implemented yet in Angular 2 and I'm not sure if they have plans to, however since Angular 2 is using typescript (if you've decided to go that route) you can use class inheritance by doing class MyClass extends OtherClass { ... }. For component inheritance I'd suggest getting involved with the Angular 2 project by going to https://github.com/angular/angular/issues and submitting a feature request!

Make SymbolIndexer( const SymbolIndexer& ) private. If you're assigning to a reference, you're not copying.

This is what I normally do:

float rads = atan2(y, x);
if (y < 0) rads = M_PI*2.f + rads;
float degrees = rads*180.f/M_PI;

As of TypeScript 1.6, properties in object literals that do not have a corresponding property in the type they're being assigned to are flagged as errors.

Usually this error means you have a bug (typically a typo) in your code, or in the definition file. The right fix in this case would be to fix the typo. In the question, the property callbackOnLoactionHash is incorrect and should have been callbackOnLocationHash (note the mis-spelling of "Location").

This change also required some updates in definition files, so you should get the latest version of the .d.ts for any libraries you're using.

Example:

interface TextOptions {
    alignment?: string;
    color?: string;
    padding?: number;
}
function drawText(opts: TextOptions) { ... }
drawText({ align: 'center' }); // Error, no property 'align' in 'TextOptions'

But I meant to do that

There are a few cases where you may have intended to have extra properties in your object. Depending on what you're doing, there are several appropriate fixes

Type-checking only some properties

Sometimes you want to make sure a few things are present and of the correct type, but intend to have extra properties for whatever reason. Type assertions (<T>v or v as T) do not check for extra properties, so you can use them in place of a type annotation:

interface Options {
    x?: string;
    y?: number;
}

// Error, no property 'z' in 'Options'
let q1: Options = { x: 'foo', y: 32, z: 100 };
// OK
let q2 = { x: 'foo', y: 32, z: 100 } as Options;
// Still an error (good):
let q3 = { x: 100, y: 32, z: 100 } as Options;

These properties and maybe more

Some APIs take an object and dynamically iterate over its keys, but have 'special' keys that need to be of a certain type. Adding a string indexer to the type will disable extra property checking

Before

interface Model {
  name: string;
}
function createModel(x: Model) { ... }

// Error
createModel({name: 'hello', length: 100});

After

interface Model {
  name: string;
  [others: string]: any;
}
function createModel(x: Model) { ... }

// OK
createModel({name: 'hello', length: 100});

This is a dog or a cat or a horse, not sure yet

interface Animal { move; }
interface Dog extends Animal { woof; }
interface Cat extends Animal { meow; }
interface Horse extends Animal { neigh; }

let x: Animal;
if(...) {
  x = { move: 'doggy paddle', woof: 'bark' };
} else if(...) {
  x = { move: 'catwalk', meow: 'mrar' };
} else {
  x = { move: 'gallop', neigh: 'wilbur' };
}

Two good solutions come to mind here

Specify a closed set for x

// Removes all errors
let x: Dog|Cat|Horse;

or Type assert each thing

// For each initialization
  x = { move: 'doggy paddle', woof: 'bark' } as Dog;

This type is sometimes open and sometimes not

A clean solution to the "data model" problem using intersection types:

interface DataModelOptions {
  name?: string;
  id?: number;
}
interface UserProperties {
  [key: string]: any;
}
function createDataModel(model: DataModelOptions & UserProperties) {
 /* ... */
}
// findDataModel can only look up by name or id
function findDataModel(model: DataModelOptions) {
 /* ... */
}
// OK
createDataModel({name: 'my model', favoriteAnimal: 'cat' });
// Error, 'ID' is not correct (should be 'id')
findDataModel({ ID: 32 });

See also https://github.com/Microsoft/TypeScript/issues/3755

For %appdata% take a look to

Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)

I had the same issue.

I didn't need to download anything else to solve this. CV2 had everything I needed.

Instead of trying to figure out where the .xml files are and hard coding the values, I used a property given by cv2.

From OP

face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml')

Becomes

face_cascade = cv2.CascadeClassifier(cv2.data.haarcascades + 'haarcascade_frontalface_default.xml')
eye_cascade = cv2.CascadeClassifier(cv2.data.haarcascades + 'haarcascade_eye.xml')

The easiest way is to not store the count, relying on the COUNT aggregate function to reflect the value as it is in the database:

   SELECT c.category_name,
          COUNT(p.post_id) AS num_posts
     FROM CATEGORY c
LEFT JOIN POSTS p ON p.category_id = c.category_id

You can create a view to house the query mentioned above, so you can query the view just like you would a table...

But if you're set on storing the number, use:

UPDATE CATEGORY
   SET count = count + 1
 WHERE category_id = ?

..replacing "?" with the appropriate value.

Most pure lua print table functions I've seen have a problem with deep recursion and tend to cause a stack overflow when going too deep. This print table function that I've written does not have this problem. It should also be capable of handling really large tables due to the way it handles concatenation. In my personal usage of this function, it outputted 63k lines to file in about a second.

The output also keeps lua syntax and the script can easily be modified for simple persistent storage by writing the output to file if modified to allow only number, boolean, string and table data types to be formatted.

function print_table(node)
    local cache, stack, output = {},{},{}
    local depth = 1
    local output_str = "{\n"

    while true do
        local size = 0
        for k,v in pairs(node) do
            size = size + 1
        end

        local cur_index = 1
        for k,v in pairs(node) do
            if (cache[node] == nil) or (cur_index >= cache[node]) then

                if (string.find(output_str,"}",output_str:len())) then
                    output_str = output_str .. ",\n"
                elseif not (string.find(output_str,"\n",output_str:len())) then
                    output_str = output_str .. "\n"
                end

                -- This is necessary for working with HUGE tables otherwise we run out of memory using concat on huge strings
                table.insert(output,output_str)
                output_str = ""

                local key
                if (type(k) == "number" or type(k) == "boolean") then
                    key = "["..tostring(k).."]"
                else
                    key = "['"..tostring(k).."']"
                end

                if (type(v) == "number" or type(v) == "boolean") then
                    output_str = output_str .. string.rep('\t',depth) .. key .. " = "..tostring(v)
                elseif (type(v) == "table") then
                    output_str = output_str .. string.rep('\t',depth) .. key .. " = {\n"
                    table.insert(stack,node)
                    table.insert(stack,v)
                    cache[node] = cur_index+1
                    break
                else
                    output_str = output_str .. string.rep('\t',depth) .. key .. " = '"..tostring(v).."'"
                end

                if (cur_index == size) then
                    output_str = output_str .. "\n" .. string.rep('\t',depth-1) .. "}"
                else
                    output_str = output_str .. ","
                end
            else
                -- close the table
                if (cur_index == size) then
                    output_str = output_str .. "\n" .. string.rep('\t',depth-1) .. "}"
                end
            end

            cur_index = cur_index + 1
        end

        if (size == 0) then
            output_str = output_str .. "\n" .. string.rep('\t',depth-1) .. "}"
        end

        if (#stack > 0) then
            node = stack[#stack]
            stack[#stack] = nil
            depth = cache[node] == nil and depth + 1 or depth - 1
        else
            break
        end
    end

    -- This is necessary for working with HUGE tables otherwise we run out of memory using concat on huge strings
    table.insert(output,output_str)
    output_str = table.concat(output)

    print(output_str)
end

Here is an example:

local t = {
    ["abe"] = {1,2,3,4,5},
    "string1",
    50,
    ["depth1"] = { ["depth2"] = { ["depth3"] = { ["depth4"] = { ["depth5"] = { ["depth6"] = { ["depth7"]= { ["depth8"] = { ["depth9"] = { ["depth10"] = {1000}, 900}, 800},700},600},500}, 400 }, 300}, 200}, 100},
    ["ted"] = {true,false,"some text"},
    "string2",
    [function() return end] = function() return end,
    75
}

print_table(t)

Output:

{
    [1] = 'string1',
    [2] = 50,
    [3] = 'string2',
    [4] = 75,
    ['abe'] = {
        [1] = 1,
        [2] = 2,
        [3] = 3,
        [4] = 4,
        [5] = 5
    },
    ['function: 06472B70'] = 'function: 06472A98',
    ['depth1'] = {
        [1] = 100,
        ['depth2'] = {
            [1] = 200,
            ['depth3'] = {
                [1] = 300,
                ['depth4'] = {
                    [1] = 400,
                    ['depth5'] = {
                        [1] = 500,
                        ['depth6'] = {
                            [1] = 600,
                            ['depth7'] = {
                                [1] = 700,
                                ['depth8'] = {
                                    [1] = 800,
                                    ['depth9'] = {
                                        [1] = 900,
                                        ['depth10'] = {
                                            [1] = 1000
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    },
    ['ted'] = {
        [1] = true,
        [2] = false,
        [3] = 'some text'
    }
}

The solution is

 $conn->set_charset("utf8");

As suat said, most of the time the connection refused is due to the fact that the port you set up is in use or there is a difference between the port number in your remote application debugging configuration in Eclipse and the port number used in the address attribute in

-Xrunjdwp:transport=dt_socket,address=1044,server=y,suspend=n.

Check those things. Thanks!

A possibly simpler alternative to editing the ssh config file (as suggested in all other answers), is to configure an individual repository to use a different (e.g. non-default) ssh key.

Inside the repository for which you want to use a different key, run:

git config core.sshCommand 'ssh -i ~/.ssh/id_rsa_anotheraccount'

If your key is passhprase-protected and you don't want to type your password every time, you have to add it to the ssh-agent. Here's how to do it for ubuntu and here for macOS.

^{It should also be possible to scale this approach to multiple repositories using global git config and conditional includes (see example).}

I found this easier to understand:

List<string> names = new List<string> { "One", "Two", "Three", "Four", "Five" };
        for (int i = 0; i < names.Count; i++)
        {
            Console.WriteLine(names[i]);
        }

Renaming Columns (Laravel 5.x)

To rename a column, you may use the renameColumn method on the Schema builder. *Before renaming a column, be sure to add the doctrine/dbal dependency to your composer.json file.*

Or you can simply required the package using composer...

composer require doctrine/dbal

Source: https://laravel.com/docs/5.0/schema#renaming-columns

Note: Use make:migration and not migrate:make for Laravel 5.x

You can use super.dispose() method which is more similar to close operation.

I don't know MSSQL specifically, but 36 million rows is not large to an enterprise database - working with mainframe databases, 100,000 rows sounds like a configuration table to me :-).

While I'm not a big fan of some of Microsoft's software, this isn't Access we're talking about here: I assume they can handle pretty substantial database sizes with their enterprise DBMS.

I suspect days may have been too fine a resolution to divide it up, if indeed it needs dividing at all.

You can think of an ArrayBuffer as a typed Buffer.

An ArrayBuffer therefore always needs a type (the so-called "Array Buffer View"). Typically, the Array Buffer View has a type of Uint8Array or Uint16Array.

There is a good article from Renato Mangini on converting between an ArrayBuffer and a String.

I have summarized the essential parts in a code example (for Node.js). It also shows how to convert between the typed ArrayBuffer and the untyped Buffer.

function stringToArrayBuffer(string) {
  const arrayBuffer = new ArrayBuffer(string.length);
  const arrayBufferView = new Uint8Array(arrayBuffer);
  for (let i = 0; i < string.length; i++) {
    arrayBufferView[i] = string.charCodeAt(i);
  }
  return arrayBuffer;
}

function arrayBufferToString(buffer) {
  return String.fromCharCode.apply(null, new Uint8Array(buffer));
}

const helloWorld = stringToArrayBuffer('Hello, World!'); // "ArrayBuffer" (Uint8Array)
const encodedString = new Buffer(helloWorld).toString('base64'); // "string"
const decodedBuffer = Buffer.from(encodedString, 'base64'); // "Buffer"
const decodedArrayBuffer = new Uint8Array(decodedBuffer).buffer; // "ArrayBuffer" (Uint8Array)

console.log(arrayBufferToString(decodedArrayBuffer)); // prints "Hello, World!"

Selenium does it for you. Or at least it tries its best. Sometimes it falls short, and you must help it a little bit. The usual solution is Implicit Wait which solves most of the problems.

If you really know what you're doing, and why you're doing it, you could try to write a generic method which would check whether the page is completely loaded. However, it can't be done for every web and for every situation.

Related question: Selenium WebDriver : Wait for complex page with JavaScript(JS) to load, see my answer there.

Shorter version: You'll never be sure.

The "normal" load is easy - document.readyState. This one is implemented by Selenium, of course. The problematic thing are asynchronous requests, AJAX, because you can never tell whether it's done for good or not. Most of today's webpages have scripts that run forever and poll the server all the time.

The various things you could do are under the link above. Or, like 95% of other people, use Implicit Wait implicity and Explicit Wait + ExpectedConditions where needed.

E.g. after a click, some element on the page should become visible and you need to wait for it:

WebDriverWait wait = new WebDriverWait(driver, 10);  // you can reuse this one

WebElement elem = driver.findElement(By.id("myInvisibleElement"));
elem.click();
wait.until(ExpectedConditions.visibilityOf(elem));

What about this ? :

Data.indexOf(_.find(Data, function(element) {
  return element.name === 'John';
}));

Assuming you are using lodash or underscorejs.

Since the aggregates string can be longer than 4000 bytes, you can't use the LISTAGG function. You could potentially create a user-defined aggregate function that returns a CLOB rather than a VARCHAR2. There is an example of a user-defined aggregate that returns a CLOB in the original askTom discussion that Tim links to from that first discussion.

There are two options. You can make your entire layout to be scrollable or only the TextView to be scrollable.

For the first case,

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <TableLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:stretchColumns="1" >

            <TableRow>

                <ImageView
                    android:id="@+id/imageView"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="5dip"
                    android:layout_marginRight="5dip"
                    android:layout_marginTop="10dip"
                    android:src="@drawable/icon"
                    android:tint="#55ff0000" >
                </ImageView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/name"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Name " >
                </TextView>

                <TextView
                    android:id="@+id/name1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Veer" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/age"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Age" >
                </TextView>

                <TextView
                    android:id="@+id/age1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="23" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/gender"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Gender" >
                </TextView>

                <TextView
                    android:id="@+id/gender1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Male" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/profession"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Professsion" >
                </TextView>

                <TextView
                    android:id="@+id/profession1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Mobile Developer" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/phone"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Phone" >
                </TextView>

                <TextView
                    android:id="@+id/phone1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="03333736767" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/email"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Email" >
                </TextView>

                <TextView
                    android:id="@+id/email1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="[email protected]" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/hobby"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Hobby" >
                </TextView>

                <TextView
                    android:id="@+id/hobby1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Play Games" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/ilike"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  I like" >
                </TextView>

                <TextView
                    android:id="@+id/ilike1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Java, Objective-c" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/idislike"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  I dislike" >
                </TextView>

                <TextView
                    android:id="@+id/idislike1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Microsoft" >
                </TextView>
            </TableRow>

            <TableRow>

                <TextView
                    android:id="@+id/address"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:padding="3dip"
                    android:text="  Address" >
                </TextView>

                <TextView
                    android:id="@+id/address1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="left"
                    android:text="Johar Mor" >
                </TextView>
            </TableRow>

            <Relativelayout>
            </Relativelayout>
        </TableLayout>
    </RelativeLayout>

</ScrollView>

or, as I said you can use scrollView for TextView alone.

If you want to wait for the executor service to finish executing, call shutdown() and then, awaitTermination(units, unitType), e.g. awaitTermination(1, MINUTE). The ExecutorService does not block on it's own monitor, so you can't use wait etc.

CHAR is a fixed-length data type that uses as much space as possible. So a:= a||'one '; will require more space than is available. Your problem can be reduced to the following example:

declare
  v_foo char(50);
begin
  v_foo := 'A';
  dbms_output.put_line('length of v_foo(A) = ' || length(v_foo));
  -- next line will raise:
  -- ORA-06502: PL/SQL: numeric or value error: character string buffer too small
  v_foo := v_foo || 'B';
  dbms_output.put_line('length of v_foo(AB) = ' || length(v_foo));  
end;
/

Never use char. For rationale check the following question (read also the links):

• Oracle datatype: Should I use VARCHAR2 or CHAR

Partial Key:

It is a set of attributes that can uniquely identify weak entities and that are related to same owner entity. It is sometime called as Discriminator.

Alternate Key:

All Candidate Keys excluding the Primary Key are known as Alternate Keys.

Artificial Key:

If no obvious key, either stand alone or compound is available, then the last resort is to simply create a key, by assigning a unique number to each record or occurrence. Then this is known as developing an artificial key.

Compound Key:

If no single data element uniquely identifies occurrences within a construct, then combining multiple elements to create a unique identifier for the construct is known as creating a compound key.

Natural Key:

When one of the data elements stored within a construct is utilized as the primary key, then it is called the natural key.

One method is to add a new event listener that calls e.stopImmediatePropagation().

Try this.

.nav-tabs > li{
    float:none !important;
    display:inline-block !important;
}

.nav-tabs {
    text-align:center !important;
}

dangerouslySetInnerHTML has many disadvantage because it set inside the tag.

I suggest you to use some react wrapper like i found one here on npm for this purpose. html-react-parser does the same job.

import Parser from 'html-react-parser';
var thisIsMyCopy = '<p>copy copy copy <strong>strong copy</strong></p>';


render: function() {
    return (
        <div className="content">{Parser(thisIsMyCopy)}</div>
    );
}

Very Simple :)

toString is a function, not a property. You'll want this:

console.log(aa.toString());

Alternatively, use join to specify the separator (toString() === join(','))

console.log(aa.join(' and '));

Try this code.

public void send (String fileName) {
    String SFTPHOST = "host:IP";
    int SFTPPORT = 22;
    String SFTPUSER = "username";
    String SFTPPASS = "password";
    String SFTPWORKINGDIR = "file/to/transfer";

    Session session = null;
    Channel channel = null;
    ChannelSftp channelSftp = null;
    System.out.println("preparing the host information for sftp.");

    try {
        JSch jsch = new JSch();
        session = jsch.getSession(SFTPUSER, SFTPHOST, SFTPPORT);
        session.setPassword(SFTPPASS);
        java.util.Properties config = new java.util.Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);
        session.connect();
        System.out.println("Host connected.");
        channel = session.openChannel("sftp");
        channel.connect();
        System.out.println("sftp channel opened and connected.");
        channelSftp = (ChannelSftp) channel;
        channelSftp.cd(SFTPWORKINGDIR);
        File f = new File(fileName);
        channelSftp.put(new FileInputStream(f), f.getName());
        log.info("File transfered successfully to host.");
    } catch (Exception ex) {
        System.out.println("Exception found while tranfer the response.");
    } finally {
        channelSftp.exit();
        System.out.println("sftp Channel exited.");
        channel.disconnect();
        System.out.println("Channel disconnected.");
        session.disconnect();
        System.out.println("Host Session disconnected.");
    }
}   

Usually you don't have to worry about calculating them as your assembler (or linker) will take of getting the calculations right. Let's say you have a small function:

func:
  slti $t0, $a0, 2
  beq $t0, $zero, cont
  ori $v0, $zero, 1
  jr $ra
cont:
  ...
  jal func
  ... 

When translating the above code into a binary stream of instructions the assembler (or linker if you first assembled into an object file) it will be determined where in memory the function will reside (let's ignore position independent code for now). Where in memory it will reside is usually specified in the ABI or given to you if you're using a simulator (like SPIM which loads the code at 0x400000 - note the link also contains a good explanation of the process).

Assuming we're talking about the SPIM case and our function is first in memory, the slti instruction will reside at 0x400000, the beq at 0x400004 and so on. Now we're almost there! For the beq instruction the branch target address is that of cont (0x400010) looking at a MIPS instruction reference we see that it is encoded as a 16-bit signed immediate relative to the next instruction (divided by 4 as all instructions must reside on a 4-byte aligned address anyway).

That is:

Current address of instruction + 4 = 0x400004 + 4 = 0x400008
Branch target = 0x400010
Difference = 0x400010 - 0x400008 = 0x8
To encode = Difference / 4 = 0x8 / 4 = 0x2 = 0b10

Encoding of beq $t0, $zero, cont

0001 00ss ssst tttt iiii iiii iiii iiii
---------------------------------------
0001 0001 0000 0000 0000 0000 0000 0010

As you can see you can branch to within -0x1fffc .. 0x20000 bytes. If for some reason, you need to jump further you can use a trampoline (an unconditional jump to the real target placed placed within the given limit).

Jump target addresses are, unlike branch target addresses, encoded using the absolute address (again divided by 4). Since the instruction encoding uses 6 bits for the opcode, this only leaves 26 bits for the address (effectively 28 given that the 2 last bits will be 0) therefore the 4 bits most significant bits of the PC register are used when forming the address (won't matter unless you intend to jump across 256 MB boundaries).

Returning to the above example the encoding for jal func is:

Destination address = absolute address of func = 0x400000
Divided by 4 = 0x400000 / 4 = 0x100000
Lower 26 bits = 0x100000 & 0x03ffffff = 0x100000 = 0b100000000000000000000

0000 11ii iiii iiii iiii iiii iiii iiii
---------------------------------------
0000 1100 0001 0000 0000 0000 0000 0000

You can quickly verify this, and play around with different instructions, using this online MIPS assembler i ran across (note it doesn't support all opcodes, for example slti, so I just changed that to slt here):

00400000: <func>    ; <input:0> func:
00400000: 0000002a  ; <input:1> slt $t0, $a0, 2
00400004: 11000002  ; <input:2> beq $t0, $zero, cont
00400008: 34020001  ; <input:3> ori $v0, $zero, 1
0040000c: 03e00008  ; <input:4> jr $ra
00400010: <cont>    ; <input:5> cont:
00400010: 0c100000  ; <input:7> jal func

foreach (var data in dynObj.quizlist)
{
    foreach (var data1 in data.QUIZ.QPROP)
    {
        Response.Write("Name" + ":" + data1.name + "<br>");
        Response.Write("Intro" + ":" + data1.intro + "<br>");
        Response.Write("Timeopen" + ":" + data1.timeopen + "<br>");
        Response.Write("Timeclose" + ":" + data1.timeclose + "<br>");
        Response.Write("Timelimit" + ":" + data1.timelimit + "<br>");
        Response.Write("Noofques" + ":" + data1.noofques + "<br>");

        foreach (var queprop in data1.QUESTION.QUEPROP)
        {
            Response.Write("Questiontext" + ":" + queprop.questiontext  + "<br>");
            Response.Write("Mark" + ":" + queprop.mark  + "<br>");
        }
    }
}

There's no need for the outer try in your example, so you can at least go down from 3 to 2, and also you don't need closing ; at the end of the resource list. The advantage of using two try blocks is that all of your code is present up front so you don't have to refer to a separate method:

public List<User> getUser(int userId) {
    String sql = "SELECT id, username FROM users WHERE id = ?";
    List<User> users = new ArrayList<>();
    try (Connection con = DriverManager.getConnection(myConnectionURL);
         PreparedStatement ps = con.prepareStatement(sql)) {
        ps.setInt(1, userId);
        try (ResultSet rs = ps.executeQuery()) {
            while(rs.next()) {
                users.add(new User(rs.getInt("id"), rs.getString("name")));
            }
        }
    } catch (SQLException e) {
        e.printStackTrace();
    }
    return users;
}

http://www.markrafferty.com/wp-content/w3tc/min/7415c412.e68ae1.css

Line 11:

.postItem img {
    height: auto;
    width: 450px;
}

You can either edit your CSS, or you can listen to Mageek and use INLINE STYLING to override the CSS styling that's happening:

<img src="theSource" style="width:30px;" />

Avoid setting both width and height, as the image itself might not be scaled proportionally. But you can set the dimensions to whatever you want, as per Mageek's example.

Here is Java 8 solution

public static boolean contains(final int[] arr, final int key) {
    return Arrays.stream(arr).anyMatch(i -> i == key);
}

queryString = "SELECT name FROM user WHERE id=" & Worksheets("Sheet1").Range("D4").Value

You're thinking too complicated. It's actually just $('#'+openaddress).

You can implement error-specific logic as follows:

error: function (XMLHttpRequest, textStatus, errorThrown) {
    if (textStatus == 'Unauthorized') {
        alert('custom message. Error: ' + errorThrown);
    } else {
        alert('custom message. Error: ' + errorThrown);
    }
}

    string FilePath = ConfigurationReader.FileLocation;   //Getting path value from web.config            
    XmlSerializer serializer = new XmlSerializer(typeof(Devices)); //typeof(object)
            MemoryStream memStream = new MemoryStream();
            serializer.Serialize(memStream, lstDevices);//lstdevices : I take result as a list.
            FileStream file = new FileStream(folderName + "\\Data.xml", FileMode.Create, FileAccess.ReadWrite); //foldername:Specify the path to store the xml file
            memStream.WriteTo(file);
            file.Close();

You can create and store the result as xml file in the desired location.

You also can do it using Data Export tool in dbForge Studio for MySQL.

It will allow you to select some or all tables and export them into CSV format.

I have a project where the source files are in in a folder below the project folder. When I copied the project folder without the source folder and opened the copied project, the source files are not missing but found at the old location. I closed the project, copied also the source folder, and re-opened the project. Now, the project magically references the copied source files (both the new path showed up on "save as" and a change in a file has been saved in the copied version).

There is a caveat: If not both old and new project folders are below a used library folder, the above-mentioned magic discards also the absolute reference to the library and expects it under the same relative path.

I tried this with VS Express 2012.

I have fixed this issue by unchecking 'Connect Hardware Keyboard'. Please refer to the image below to fix this issue

var str1 = "add";
str1 = str1 + " ";

Hope that helps,

Dan

Well, Seems like there was a bug when creating custom post types in the function.php file of the theme... which bugged that.

Yes you need javascript. The simplest way is to just put this at the bottom of your HTML page:

<script type="text/javascript">
alert("Hello world");
</script>

There are more preferred methods, like using jQuery's ready function, but this method will work.

Here is a code, which makes the same, but with response headers:

import socket
def patch_requests():
    old_readline = socket._fileobject.readline
    if not hasattr(old_readline, 'patched'):
        def new_readline(self, size=-1):
            res = old_readline(self, size)
            print res,
            return res
        new_readline.patched = True
        socket._fileobject.readline = new_readline
patch_requests()

I spent a lot of time searching for this, so I'm leaving it here, if someone needs.

I solved the issue by adding this import
More info

from past.builtins import xrange

We can use pytest-mock (https://pypi.org/project/pytest-mock/) mocker object to mock datetime behaviour in a particular module

Let's say you want to mock date time in the following file

# File path - source_dir/x/a.py
import datetime

def name_function():
     name = datetime.now()
     return f"name_{name}"

In the test function, mocker will be added to the function when test runs

def test_name_function(mocker):
     mocker.patch('x.a.datetime')
     x.a.datetime.now.return_value = datetime(2019, 1, 1)

     actual = name_function()

     assert actual == "name_2019-01-01"

In order to have completely custom facebook login button without using com.facebook.widget.LoginButton.

According to facebook sdk 4.x,

There new concept of login as from facebook

LoginManager and AccessToken - These new classes perform Facebook Login

So, Now you can access Facebook authentication without Facebook login button as

layout.xml

    <Button
            android:id="@+id/btn_fb_login"
            .../>

MainActivity.java

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        FacebookSdk.sdkInitialize(this.getApplicationContext());

        callbackManager = CallbackManager.Factory.create();

        LoginManager.getInstance().registerCallback(callbackManager,
                new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        Log.d("Success", "Login");

                    }

                    @Override
                    public void onCancel() {
                        Toast.makeText(MainActivity.this, "Login Cancel", Toast.LENGTH_LONG).show();
                    }

                    @Override
                    public void onError(FacebookException exception) {
                        Toast.makeText(MainActivity.this, exception.getMessage(), Toast.LENGTH_LONG).show();
                    }
                });

        setContentView(R.layout.activity_main);

        Button btn_fb_login = (Button)findViewById(R.id.btn_fb_login);

        btn_fb_login.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                  LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile", "user_friends"));
            }
        });

    }

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    callbackManager.onActivityResult(requestCode, resultCode, data); 
}

You can simply add "default none" to your variable as the form below mentioned:

{{ your_var | default('NONE', boolean=true) }}

I use this class to handle database.I hope it will help some one in future.

Happy coding.

public class Database {

private static class DBHelper extends SQLiteOpenHelper {

    /**
     * Database name
     */
    private static final String DB_NAME = "db_name";

    /**
     * Table Names
     */
    public static final String TABLE_CART = "DB_CART";


    /**
     *  Cart Table Columns
     */
    public static final String CART_ID_PK = "_id";// Primary key

    public static final String CART_DISH_NAME = "dish_name";
    public static final String CART_DISH_ID = "menu_item_id";
    public static final String CART_DISH_QTY = "dish_qty";
    public static final String CART_DISH_PRICE = "dish_price";

    /**
     * String to create reservation tabs table
     */
    private final String CREATE_TABLE_CART = "CREATE TABLE IF NOT EXISTS "
            + TABLE_CART + " ( "
            + CART_ID_PK + " INTEGER PRIMARY KEY, "
            + CART_DISH_NAME + " TEXT , "
            + CART_DISH_ID + " TEXT , "
            + CART_DISH_QTY + " TEXT , "
            + CART_DISH_PRICE + " TEXT);";


    public DBHelper(Context context) {
        super(context, DB_NAME, null, 2);

    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_TABLE_CART);


    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int arg1, int arg2) {
        db.execSQL("DROP TABLE IF EXISTS " + CREATE_TABLE_CART);
        onCreate(db);
    }

}


     /**
      * CART handler
      */
      public static class Cart {


    /**
     * Check if Cart is available or not
     *
     * @param context
     * @return
     */
    public static boolean isCartAvailable(Context context) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();
        boolean exists = false;

        try {
            String query = "SELECT * FROM " + DBHelper.TABLE_CART;
            Cursor cursor = db.rawQuery(query, null);
            exists = (cursor.getCount() > 0);
            cursor.close();
            db.close();
        } catch (SQLiteException e) {
            db.close();
        }

        return exists;
    }


    /**
     * Insert values in cart table
     *
     * @param context
     * @param dishName
     * @param dishPrice
     * @param dishQty
     * @return
     */
    public static boolean insertItem(Context context, String itemId, String dishName, String dishPrice, String dishQty) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(DBHelper.CART_DISH_ID, "" + itemId);
        values.put(DBHelper.CART_DISH_NAME, "" + dishName);
        values.put(DBHelper.CART_DISH_PRICE, "" + dishPrice);
        values.put(DBHelper.CART_DISH_QTY, "" + dishQty);

        try {
            db.insert(DBHelper.TABLE_CART, null, values);
            db.close();
            return true;
        } catch (SQLiteException e) {
            db.close();
            return false;
        }
    }

    /**
     * Check for specific record by name
     *
     * @param context
     * @param dishName
     * @return
     */
    public static boolean isItemAvailable(Context context, String dishName) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();
        boolean exists = false;

        String query = "SELECT * FROM " + DBHelper.TABLE_CART + " WHERE "
                + DBHelper.CART_DISH_NAME + " = '" + String.valueOf(dishName) + "'";


        try {
            Cursor cursor = db.rawQuery(query, null);

            exists = (cursor.getCount() > 0);
            cursor.close();

        } catch (SQLiteException e) {

            e.printStackTrace();
            db.close();

        }

        return exists;
    }

    /**
     * Update cart item by item name
     *
     * @param context
     * @param dishName
     * @param dishPrice
     * @param dishQty
     * @return
     */
    public static boolean updateItem(Context context, String itemId, String dishName, String dishPrice, String dishQty) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(DBHelper.CART_DISH_ID, itemId);
        values.put(DBHelper.CART_DISH_NAME, dishName);
        values.put(DBHelper.CART_DISH_PRICE, dishPrice);
        values.put(DBHelper.CART_DISH_QTY, dishQty);

        try {

            String[] args = new String[]{dishName};
            db.update(DBHelper.TABLE_CART, values, DBHelper.CART_DISH_NAME + "=?", args);

            db.close();


            return true;
        } catch (SQLiteException e) {
            db.close();

            return false;
        }
    }

    /**
     * Get cart list
     *
     * @param context
     * @return
     */
    public static ArrayList<CartModel> getCartList(Context context) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();

        ArrayList<CartModel> cartList = new ArrayList<>();

        try {
            String query = "SELECT * FROM " + DBHelper.TABLE_CART + ";";

            Cursor cursor = db.rawQuery(query, null);


            for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {

                cartList.add(new CartModel(
                        cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_ID)),
                        cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_NAME)),
                        cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_QTY)),
                        Integer.parseInt(cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_PRICE)))
                ));
            }

            db.close();

        } catch (SQLiteException e) {
            db.close();
        }
        return cartList;
    }

   /**
     * Get total amount of cart items
     *
     * @param context
     * @return
     */
    public static String getTotalAmount(Context context) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();

        double totalAmount = 0.0;

        try {
            String query = "SELECT * FROM " + DBHelper.TABLE_CART + ";";

            Cursor cursor = db.rawQuery(query, null);


            for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {

                totalAmount = totalAmount + Double.parseDouble(cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_PRICE))) *
                        Double.parseDouble(cursor.getString(cursor.getColumnIndex(DBHelper.CART_DISH_QTY)));
            }

            db.close();


        } catch (SQLiteException e) {
            db.close();
        }


        if (totalAmount == 0.0)
            return "";
        else
            return "" + totalAmount;
    }


    /**
     * Get item quantity
     *
     * @param context
     * @param dishName
     * @return
     */
    public static String getItemQty(Context context, String dishName) {

        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();

        Cursor cursor = null;
        String query = "SELECT * FROM " + DBHelper.TABLE_CART + " WHERE " + DBHelper.CART_DISH_NAME + " = '" + dishName + "';";
        String quantity = "0";

        try {
            cursor = db.rawQuery(query, null);

            if (cursor.getCount() > 0) {

                cursor.moveToFirst();
                quantity = cursor.getString(cursor
                        .getColumnIndex(DBHelper.CART_DISH_QTY));

                return quantity;
            }


        } catch (SQLiteException e) {
            e.printStackTrace();
        }

        return quantity;
    }


    /**
     * Delete cart item by name
     *
     * @param context
     * @param dishName
     */
    public static void deleteCartItem(Context context, String dishName) {
        DBHelper dbHelper = new DBHelper(context);
        SQLiteDatabase db = dbHelper.getReadableDatabase();

        try {

            String[] args = new String[]{dishName};
            db.delete(DBHelper.TABLE_CART, DBHelper.CART_DISH_NAME + "=?", args);

            db.close();
        } catch (SQLiteException e) {
            db.close();
            e.printStackTrace();
        }

    }


}//End of cart class

/**
 * Delete database table
 *
 * @param context
 */
public static void deleteCart(Context context) {
    DBHelper dbHelper = new DBHelper(context);
    SQLiteDatabase db = dbHelper.getReadableDatabase();

    try {

        db.execSQL("DELETE FROM " + DBHelper.TABLE_CART);

    } catch (SQLiteException e) {
        e.printStackTrace();
    }

}

}

Usage:

  if(Database.Cart.isCartAvailable(context)){

       Database.deleteCart(context);

   }

That can better be condensed down to this.

var item = Items.First(x => x.Id == 123);

Your query is currently collecting all results (and there may be more than one) within the enumerable and then taking the first one from that set, doing more work than necessary.

Single/SingleOrDefault are worthwhile, but only if you want to iterate through the entire collection and verify that the match is unique in addition to selecting that match. First/FirstOrDefault will just take the first match and leave, regardless of how many duplicates actually exist.

I came here with the same above message, but from Azure DevOps.

In my case, I was using docker-compose, not just docker, and writing the build pipeline in yaml.

- task: DockerCompose@0
  displayName: 'Push services'
  inputs:
    azureSubscription: '$(Parameters.azureSubscriptionEndpoint)'
    azureContainerRegistry: '$(Parameters.azureContainerRegistry)'
    dockerComposeFile: '$(Parameters.dockerComposeFile)'
    additionalDockerComposeFiles: |
      docker-compose.release.yml
      docker-compose.ci.yml
    dockerComposeFileArgs: 'PublishFolder=publish'
    action: 'Push services'
    additionalImageTags: '$(Build.BuildId)'
    includeLatestTag: true

The message I got was specifically saying that it was trying to push to docker.io, which was not what I wanted. I had intended this to go to my Azure Container Registry.

Thing that was missing was this line under inputs:

containerregistrytype: Azure Container Registry

The existing pipeline wizard that built the yaml above did not have this line at all. Hopefully this helps someone else pulling their hair out over Azure DevOps.

An iOS/Android pure javascript react-native component that renders your HTML into 100% native views. It's made to be extremely customizable and easy to use and aims at being able to render anything you throw at it.

react-native-render-html

use above library to improve your app performance level and easy to use.

Install

npm install react-native-render-html --save or yarn add react-native-render-html

Basic usage

import React, { Component } from 'react';
import { ScrollView, Dimensions } from 'react-native';
import HTML from 'react-native-render-html';

const htmlContent = `
    <h1>This HTML snippet is now rendered with native components !</h1>
    <h2>Enjoy a webview-free and blazing fast application</h2>
    <img src="https://i.imgur.com/dHLmxfO.jpg?2" />
    <em style="textAlign: center;">Look at how happy this native cat is</em>
`;

export default class Demo extends Component {
    render () {
        return (
            <ScrollView style={{ flex: 1 }}>
                <HTML html={htmlContent} imagesMaxWidth={Dimensions.get('window').width} />
            </ScrollView>
        );
    }
}

PROPS

you may user it's different different types of props (see above link) for the designing and customizable also using below link refer.

Customizable render html

As far as I know, you can't.

Besides, that isnt what CSS is for anyway. CSS is for styling and HTML is for markup.

In my case, it was because it didn't like that I left the minSDK and targeSdk in the manifest. Go figure.

date --date='-1 day'

The most important difference is this:

• In case of persist method, if the entity that is to be managed in the persistence context, already exists in persistence context, the new one is ignored. (NOTHING happened)

• But in case of merge method, the entity that is already managed in persistence context will be replaced by the new entity (updated) and a copy of this updated entity will return back. (from now on any changes should be made on this returned entity if you want to reflect your changes in persistence context)

There are a bunch of different reasons for the "Too Many Connections" error.

Check out this FAQ page on MySQL.com: http://dev.mysql.com/doc/refman/5.5/en/too-many-connections.html

Check your my.cnf file for "max_connections". If none exist try:

[mysqld]
set-variable=max_connections=250

However the default is 151, so you should be okay.

If you are on a shared host, it might be that other users are taking up too many connections.

Other problems to look out for is the use of persistent connections and running out of diskspace.

Good news! In KitKat there's now a public API for interacting with these secondary shared storage devices.

The new Context.getExternalFilesDirs() and Context.getExternalCacheDirs() methods can return multiple paths, including both primary and secondary devices. You can then iterate over them and check Environment.getStorageState() and File.getFreeSpace() to determine the best place to store your files. These methods are also available on ContextCompat in the support-v4 library.

Also note that if you're only interested in using the directories returned by Context, you no longer need the READ_ or WRITE_EXTERNAL_STORAGE permissions. Going forward, you'll always have read/write access to these directories with no additional permissions required.

Apps can also continue working on older devices by end-of-lifing their permission request like this:

<uses-permission
    android:name="android.permission.WRITE_EXTERNAL_STORAGE"
    android:maxSdkVersion="18" />

map(float, mylist) should do it.

(In Python 3, map ceases to return a list object, so if you want a new list and not just something to iterate over, you either need list(map(float, mylist) - or use SilentGhost's answer which arguably is more pythonic.)

Don't worry about you should just change .dll from x64 to x86, in the native library.

for example:- you might have selected this (C:\opencv\build\java\x64).

instead you select this for native library(C:\opencv\build\java\x86).

Big O is a means to represent the upper bounds of any function. We generally use it for expressing the upper bounds of a function that tells the running time of an Algorithm.

Ex : f(n) = 2(n^2) +3n be a function representing the running time of a hypothetical algorithm, Big-O notation essentially gives the upper limit for this function which is O(n^2)

This notation basically tells us that, for any input 'n' the running time won't be greater than the value expressed by Big-O notation.

Also, agree with all the above detailed answers. Hope this helps !!

You can try with:

route -n get default

It is not the same as GNU/Linux's route -n (or even ip route show) but is useful for checking the default route information. Also, you can check the route that packages will take to a particular host. E.g.

route -n get www.yahoo.com

The output would be similar to:

   route to: 98.137.149.56
destination: default
       mask: 128.0.0.0
    gateway: 5.5.0.1
  interface: tun0
      flags: <UP,GATEWAY,DONE,STATIC,PRCLONING>
 recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
       0         0         0         0         0         0      1500         0

IMHO netstat -nr is what you need. Even MacOSX's Network utility app(*) uses the output of netstat to show routing information.

I hope this helps :)

(*) You can start Network utility with open /Applications/Utilities/Network\ Utility.app

In my case I was using jquery on my typescript file:

import * as $ from "jquery";

But this line gives me back an Object $ and it does not allow to use as a function (I can not use $('my-selector')). It solves my problem this lines, I hope it could help anyone else:

import * as JQuery from "jquery";
const $ = JQuery.default;

I was getting this issue because I set the wrong target in the podfile (the project itself rather than the UITests section).

Eric B’s answer is OK if you want to preserve just one or maybe two columns from the existing row. If you want to preserve a lot of columns, it gets too cumbersome fast.

Here’s an approach that will scale well to any amount of columns on either side. To illustrate it I will assume the following schema:

 CREATE TABLE page (
     id      INTEGER PRIMARY KEY,
     name    TEXT UNIQUE,
     title   TEXT,
     content TEXT,
     author  INTEGER NOT NULL REFERENCES user (id),
     ts      TIMESTAMP DEFAULT CURRENT_TIMESTAMP
 );

Note in particular that name is the natural key of the row – id is used only for foreign keys, so the point is for SQLite to pick the ID value itself when inserting a new row. But when updating an existing row based on its name, I want it to continue to have the old ID value (obviously!).

I achieve a true UPSERT with the following construct:

 WITH new (name, title, author) AS ( VALUES('about', 'About this site', 42) )
 INSERT OR REPLACE INTO page (id, name, title, content, author)
 SELECT old.id, new.name, new.title, old.content, new.author
 FROM new LEFT JOIN page AS old ON new.name = old.name;

The exact form of this query can vary a bit. The key is the use of INSERT SELECT with a left outer join, to join an existing row to the new values.

Here, if a row did not previously exist, old.id will be NULL and SQLite will then assign an ID automatically, but if there already was such a row, old.id will have an actual value and this will be reused. Which is exactly what I wanted.

In fact this is very flexible. Note how the ts column is completely missing on all sides – because it has a DEFAULT value, SQLite will just do the right thing in any case, so I don’t have to take care of it myself.

You can also include a column on both the new and old sides and then use e.g. COALESCE(new.content, old.content) in the outer SELECT to say “insert the new content if there was any, otherwise keep the old content” – e.g. if you are using a fixed query and are binding the new values with placeholders.

I've got the same problem in Docker.

In Docker I keep trained LightGBM model + Flask serving requests. As HTTP server I used gunicorn 19.9.0. When I run my code locally on my Mac laptop everything worked just perfect, but when I ran the app in Docker my POST JSON requests were freezing for some time, then gunicorn worker had been failing with [CRITICAL] WORKER TIMEOUT exception.

I tried tons of different approaches, but the only one solved my issue was adding worker_class=gthread.

Here is my complete config:

import multiprocessing

workers = multiprocessing.cpu_count() * 2 + 1
accesslog = "-" # STDOUT
access_log_format = '%(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(q)s" "%(D)s"'
bind = "0.0.0.0:5000"
keepalive = 120
timeout = 120
worker_class = "gthread"
threads = 3

In your function form is a DOM object, In order to use attr() you need to convert it to jQuery object.

function f(form, fname, lname) {
    action = $(form).attr("action");
    $.post(att, {fname : fname , lname :lname}).done(function (data) {
        alert(data);
    });
    return true;
}

With .serialize()

function f(form, fname, lname) {
    action = $(form).attr("action");
    $.post(att, $(form).serialize() ).done(function (data) {
        alert(data);
    });
    return true;
}

Additionally, You can use .serialize()

Run the following command on terminal.

sudo apt-add-repository ppa:paolorotolo/android-studio
sudo apt-get update
sudo apt-get install android-studio

You are sending a array of string

var usersRoles = [];
jQuery("#dualSelectRoles2 option").each(function () {
    usersRoles.push(jQuery(this).val());
});   

So change model type accordingly

 public ActionResult AddUser(List<string> model)
 {
 }

Finish doesn't close the app, it just closes the activity. If this is the launcher activity, then it will close your app; if not, it will go back to the previous activity.

What you can do is use onActivityResult to trigger as many finish() as needed to close all the open activities.

An old PHP function "mysql_list_fields()" is deprecated. So, today the best way to get names of fields is a query "SHOW COLUMNS FROM table_name [LIKE 'name']". So, here is a little example:

$fields = array();
$res=mysql_query("SHOW COLUMNS FROM mytable");
while ($x = mysql_fetch_assoc($res)){
  $fields[] = $x['Field'];
}
foreach ($fields as $f) { echo "<br>Field name: ".$f; }

Here's the code:

glPushMatrix();
glTranslatef(18,2,0);
glRotatef(angle, 0, 0, 0.7);
glColor3ub(0,255,255);
glutWireSphere(3,10,10);
glPopMatrix();

A PivotTable might suit, though I am not quite certain of the layout of your data:

The bold numbers (one of each pair of duplicates) need not be shown as the field does not have to be subtotalled eg:

If you don't mind including the underscore as an allowed character, you could try simply:

result = subject.replace(/\W+/g, "");

If the underscore must be excluded also, then

result = subject.replace(/[^A-Z0-9]+/ig, "");

(Note the case insensitive flag)

No, it is better practice to leave them out.

Without strip(), you can have empty keys and values:

apples<tab>round, fruity things
oranges<tab>round, fruity things
bananas<tab>

Without strip(), bananas is present in the dictionary but with an empty string as value. With strip(), this code will throw an exception because it strips the tab of the banana line.

Another way similar to the yglodt's

In application.properties:

spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate4.SpringSessionContext

And in your configuration class:

@Bean
public SessionFactory sessionFactory(HibernateEntityManagerFactory hemf) {
    return hemf.getSessionFactory();
}

Then you can autowire the SessionFactory in your services as usual:

@Autowired
private SessionFactory sessionFactory;

We are developing Versile Python (VPy), an implementation for python 2.6+ and 3.x of a new ORB/RPC framework. Functional AGPL dev releases for review and testing are available. VPy has native python capabilities similar to PyRo and RPyC via a general native objects layer (code example). The product is designed for platform-independent remote object interaction for implementations of Versile Platform.

Full disclosure: I work for the company developing VPy.

If the image has big dimenssions is hard to get good results without resizing, below is a 60 percent resizing which for most of the purposes doesn't destroys too much of the image.

I use this with good result for gray-scale images (I convert from PNG):

ls ./*.png | xargs -L1 -I {} convert {} -strip -interlace JPEG -sampling-factor 4:2:0 -adaptive-resize 60%   -gaussian-blur 0.05 -colorspace Gray -quality 20  {}.jpg

I use this for scanned B&W pages get them to gray-scale images (the extra arguments cleans shadows from previous pages):

ls ./*.png | xargs -L1 -I {} convert {} -strip -interlace JPEG -sampling-factor 4:2:0 -adaptive-resize 60%   -gaussian-blur 0.05 -colorspace Gray -quality 20 -density 300 -fill white -fuzz 40% +opaque "#000000" -density 300 {}.jpg 

I use this for color images:

ls ./*.png | xargs -L1 -I {} convert {} -strip -interlace JPEG -sampling-factor 4:2:0 -adaptive-resize 60%   -gaussian-blur 0.05 -colorspace RGB -quality 20  {}.jpg 

One common error is leaving a space before the class names. Even if this was the correct syntax:

.menu a:hover .main-nav-item

it never would have worked.

Therefore, you would not write

.menu a .main-nav-item:hover

it would be

.menu a.main-nav-item:hover

You do not need to create a virtual device using android studio. You can use your android device running on android 8.0 or higher. All you have to do is to activate developer settings, then enable USB DEBUGGING in the developer settings. Your device will show at the bottom right side of the VS Code. Without enabling the USB debugging, the device may not show.enter image description here

It's not clear what you're actually trying to achieve, but here are two alternatives:

class E
{
public:
    struct X
    {
        int v;
    };

    // 1. (a) Instantiate an 'X' within 'E':
    X x;
};

int main()
{
    // 1. (b) Modify the 'x' within an 'E':
    E e;
    e.x.v = 9;

    // 2. Instantiate an 'X' outside 'E':
    E::X x;
    x.v = 10;
}

When you decorate a model property with [DataType(DataType.Date)] the default template in ASP.NET MVC 4 generates an input field of type="date":

<input class="text-box single-line" 
       data-val="true" 
       data-val-date="The field EstPurchaseDate must be a date."
       id="EstPurchaseDate" 
       name="EstPurchaseDate" 
       type="date" value="9/28/2012" />

Browsers that support HTML5 such Google Chrome render this input field with a date picker.

In order to correctly display the date, the value must be formatted as 2012-09-28. Quote from the specification:

value: A valid full-date as defined in [RFC 3339], with the additional qualification that the year component is four or more digits representing a number greater than 0.

You could enforce this format using the DisplayFormat attribute:

[DataType(DataType.Date)]
[DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
public Nullable<System.DateTime> EstPurchaseDate { get; set; }

1. List content of all directories

Set autoindex option to on. It is off by default.

Your configuration file ( vi /etc/nginx/sites-available/default ) should be like this

location /{ 
   ... ( some other lines )
   autoindex on;
   ... ( some other lines )
}

2. List content of only some specific directory

Set autoindex option to on. It is off by default.

Your configuration file ( vi /etc/nginx/sites-available/default )
should be like this.
change path_of_your_directory to your directory path

location /path_of_your_directory{ 
   ... ( some other lines )
   autoindex on;
   ... ( some other lines )
}

Hope it helps..

REST is an style of software architecture for distributed software

Conforming to the REST constraints is referred to as being ‘RESTful’.

Very used today to build web services as an alternative to SOAP.

Here you have some links to check

http://en.wikipedia.org/wiki/Representational_State_Transfer
http://www.computerworld.com/s/article/297424/Representational_State_Transfer_REST_
http://www.ibm.com/developerworks/webservices/library/ws-restful/

109 - mon dd yyyy (In SQL conversion)

The required format is April 1 2009

so

 SELECT DATENAME(MONTH, GETDATE()) + RIGHT(CONVERT(VARCHAR(12), GETDATE(), 109), 9)

Result is:

If you use vim-plug (Plug), " A minimalist Vim plugin manager.":

:PlugStatus

That will not only list your plugins but check their status.

The List class's constructor can convert an IQueryable for you:

public static List<TResult> ToList<TResult>(this IQueryable source)
{
    return new List<TResult>(source);
}

or you can just convert it without the extension method, of course:

var list = new List<T>(queryable);

How about: "$env:computername.$env:userdnsdomain"

This actually only works if the user is logged into a domain (i.e. no local accounts), logged into the same domain as the server, and doesn't work with disjointed name space AD configurations.

Use this as referenced in another answer:

$myFQDN=(Get-WmiObject win32_computersystem).DNSHostName+"."+(Get-WmiObject win32_computersystem).Domain ; Write-Host $myFQDN

This example is a Sum for Date time and Time Zone(String Values)

String DateVal = "2015-03-26 12:00:00";
String TimeVal = "02:00:00";

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
SimpleDateFormat sdf2 = new SimpleDateFormat("HH:mm:ss");

Date reslt = sdf.parse( DateVal );
Date timeZ = sdf2.parse( TimeVal );
//Increase Date Time
reslt.setHours( reslt.getHours() + timeZ.getHours());
reslt.setMinutes( reslt.getMinutes() + timeZ.getMinutes());
reslt.setSeconds( reslt.getSeconds() + timeZ.getSeconds());

System.printLn.out( sdf.format(reslt) );//Result(+2 Hours):  2015-03-26 14:00:00 

Thanks :)

You can use:

EQU - equal

NEQ - not equal

LSS - less than

LEQ - less than or equal

GTR - greater than

GEQ - greater than or equal

AVOID USING:

() ! ~ - * / % + - << >> & | = *= /= %= += -= &= ^= |= <<= >>=

If it's about 10px, then I guess you could simply manually adjust the containing div's scroll offset like that:

el.scrollIntoView(true);
document.getElementById("containingDiv").scrollTop -= 10;

You can also use:

@Scripts.RenderFormat("<script type=\"text/javascript\" src=\"{0}\"></script>", "~/bundles/mybundle")

To specify the format of your output in a scenario where you need to use Charset, Type, etc.

One workaround is to create a parent div outside the element you want to get the height of, apply a height of '0' and hide any overflow. Next, take the height of the child element and remove the overflow property of the parent.

var height = $("#child").height();_x000D_
// Do something here_x000D_
$("#parent").append(height).removeClass("overflow-y-hidden");

.overflow-y-hidden {_x000D_
  height: 0px;_x000D_
  overflow-y: hidden;_x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
_x000D_
<div id="parent" class="overflow-y-hidden">_x000D_
  <div id="child">_x000D_
    This is some content I would like to get the height of!_x000D_
  </div>_x000D_
</div>

To quote the documentation:

Key words and unquoted identifiers are case insensitive. Therefore:

UPDATE MY_TABLE SET A = 5;

can equivalently be written as:

uPDaTE my_TabLE SeT a = 5;

You could also write it using quoted identifiers:

UPDATE "my_table" SET "a" = 5;

Quoting an identifier makes it case-sensitive, whereas unquoted names are always folded to lower case (unlike the SQL standard where unquoted names are folded to upper case). For example, the identifiers FOO, foo, and "foo" are considered the same by PostgreSQL, but "Foo" and "FOO" are different from these three and each other.

If you want to write portable applications you are advised to always quote a particular name or never quote it.

You can use CAST and CONVERT to switch between different types of encodings. See: http://dev.mysql.com/doc/refman/5.0/en/charset-convert.html

SELECT column1, CONVERT(column2 USING utf8)
FROM my_table 
WHERE my_condition;

var list = [
    { date: '12/1/2011', reading: 3, id: 20055 },
    { date: '13/1/2011', reading: 5, id: 20053 },
    { date: '14/1/2011', reading: 6, id: 45652 }
];

and then access it:

alert(list[1].date);

For the sake of bringing this up to date, since Excel 2013 there is now a built-in way of encoding URLs using the worksheet function ENCODEURL.

To use it in your VBA code you just need to call

EncodedUrl = WorksheetFunction.EncodeUrl(InputString)

Documentation

You can't rewrite a line without rewriting the entire file (unless the lines happen to be the same length). If your files are small then reading the entire target file into memory and then writing it out again might make sense. You can do that like this:

using System;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        int line_to_edit = 2; // Warning: 1-based indexing!
        string sourceFile = "source.txt";
        string destinationFile = "target.txt";

        // Read the appropriate line from the file.
        string lineToWrite = null;
        using (StreamReader reader = new StreamReader(sourceFile))
        {
            for (int i = 1; i <= line_to_edit; ++i)
                lineToWrite = reader.ReadLine();
        }

        if (lineToWrite == null)
            throw new InvalidDataException("Line does not exist in " + sourceFile);

        // Read the old file.
        string[] lines = File.ReadAllLines(destinationFile);

        // Write the new file over the old file.
        using (StreamWriter writer = new StreamWriter(destinationFile))
        {
            for (int currentLine = 1; currentLine <= lines.Length; ++currentLine)
            {
                if (currentLine == line_to_edit)
                {
                    writer.WriteLine(lineToWrite);
                }
                else
                {
                    writer.WriteLine(lines[currentLine - 1]);
                }
            }
        }
    }
}

If your files are large it would be better to create a new file so that you can read streaming from one file while you write to the other. This means that you don't need to have the whole file in memory at once. You can do that like this:

using System;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        int line_to_edit = 2;
        string sourceFile = "source.txt";
        string destinationFile = "target.txt";
        string tempFile = "target2.txt";

        // Read the appropriate line from the file.
        string lineToWrite = null;
        using (StreamReader reader = new StreamReader(sourceFile))
        {
            for (int i = 1; i <= line_to_edit; ++i)
                lineToWrite = reader.ReadLine();
        }

        if (lineToWrite == null)
            throw new InvalidDataException("Line does not exist in " + sourceFile);

        // Read from the target file and write to a new file.
        int line_number = 1;
        string line = null;
        using (StreamReader reader = new StreamReader(destinationFile))
        using (StreamWriter writer = new StreamWriter(tempFile))
        {
            while ((line = reader.ReadLine()) != null)
            {
                if (line_number == line_to_edit)
                {
                    writer.WriteLine(lineToWrite);
                }
                else
                {
                    writer.WriteLine(line);
                }
                line_number++;
            }
        }

        // TODO: Delete the old file and replace it with the new file here.
    }
}

You can afterwards move the file once you are sure that the write operation has succeeded (no excecption was thrown and the writer is closed).

Note that in both cases it is a bit confusing that you are using 1-based indexing for your line numbers. It might make more sense in your code to use 0-based indexing. You can have 1-based index in your user interface to your program if you wish, but convert it to a 0-indexed before sending it further.

Also, a disadvantage of directly overwriting the old file with the new file is that if it fails halfway through then you might permanently lose whatever data wasn't written. By writing to a third file first you only delete the original data after you are sure that you have another (corrected) copy of it, so you can recover the data if the computer crashes halfway through.

A final remark: I noticed that your files had an xml extension. You might want to consider if it makes more sense for you to use an XML parser to modify the contents of the files instead of replacing specific lines.

You can combine the register declaration with initialization.

reg [7:0] data_reg = 8'b10101011;

Or you can use an initial block

reg [7:0] data_reg;
initial data_reg = 8'b10101011;

Actually, you don't need to modify the object prototype. The following should work to 'obtain' unique ids for any object, efficiently enough.

var __next_objid=1;
function objectId(obj) {
    if (obj==null) return null;
    if (obj.__obj_id==null) obj.__obj_id=__next_objid++;
    return obj.__obj_id;
}

I don't know if I would say heredoc is laziness. One can say that doing anything is laziness, as there are always more cumbersome ways to do anything.

For example, in certain situations you may want to output text, with embedded variables without having to fetch from a file and run a template replace. Heredoc allows you to forgo having to escape quotes, so the text you see is the text you output. Clearly there are some negatives, for example, you can't indent your heredoc, and that can get frustrating in certain situation, especially if your a stickler for unified syntax, which I am.

Word up, I as well got tired of writing out enumerations based on Id / Name db table columns, copying and pasting stuff from queries in SSMS.

Below is a super dirty stored procedure that takes as input a table name, the column name you want to use for the c# enumeration name, and the column name that you want to use for the c# enumeration value.

Most of theses table names I work with a) end with "s" b) have a [TABLENAME]Id column and c) have a [TABLENAME]Name column, so there are a couple if statements that will assume that structure, in which case, the column name parameters are not required.

A little context for these examples - "Stonk" here doesn't really mean "stock" but kinda, the way I'm using "stonk" it means "a thing that has some numbers associated to it for a time period" But that's not important, it's just an example of table with this Id / Name schema. It looks like this:

CREATE TABLE StonkTypes (
    StonkTypeId TINYINT IDENTITY(1,1) PRIMARY KEY NOT NULL,
    StonkTypeName VARCHAR(200) NOT NULL CONSTRAINT UQ_StonkTypes_StonkTypeName UNIQUE (StonkTypeName)
)

After I create the proc, this statement:

EXEC CreateCSharpEnum 'StonkTypes'

Selects this string:

public enum StonkTypes { Stonk = 1, Bond = 2, Index = 3, Fund = 4, Commodity = 5, 
PutCallRatio = 6, }

Which I can copy and paste into a C# file.

I have a Stonks table and it has StonkId and StonkName columns so this exec:

EXEC CreateCSharpEnum 'Stonks'

Spits out:

public enum Stonks { SP500 = 1, DowJonesIndustrialAverage = 2, ..... }

But for that enum I want to use the "Symbol" column for the enum name values so this:

EXEC CreateCSharpEnum 'Stonks', 'Symbol'

Does the trick and renders:

public enum Stonks { SPY = 1, DIA = 2, ..... }

Without further ado, here is this dirty piece of craziness. Yeah, very dirty, but I'm kind of pleased with myself - it's SQL code that constructs SQL code that constructs C# code. Couple layers involved.

CREATE OR ALTER PROCEDURE CreateCSharpEnum
@TableName VARCHAR(MAX),
@EnumNameColumnName VARCHAR(MAX) = NULL,
@EnumValueColumnName VARCHAR(MAX) = NULL
AS

DECLARE @LastCharOfTableName VARCHAR(1)
SELECT @LastCharOfTableName = RIGHT(@TableName, 1)

PRINT 'Last char = [' + @LastCharOfTableName + ']'

DECLARE @TableNameWithoutS VARCHAR(MAX)
IF UPPER(@LastCharOfTableName) = 'S'
    SET @TableNameWithoutS = LEFT(@TableName, LEN(@TableName) - 1)
ELSE
    SET @TableNameWithoutS = @TableName

PRINT 'Table name without trailing s = [' + @TableNameWithoutS + ']'

IF @EnumNameColumnName IS NULL
    BEGIN
        SET @EnumNameColumnName = @TableNameWithoutS + 'Name'
    END

PRINT 'name col name = [' + @EnumNameColumnName + ']'

IF @EnumValueColumnName IS NULL
    SET @EnumValueColumnName = @TableNameWithoutS + 'Id'

PRINT 'value col name = [' + @EnumValueColumnName + ']'

-- replace spaces and punctuation
SET @EnumNameColumnName  = 'REPLACE(' + @EnumNameColumnName + ', '' '', '''')'
SET @EnumNameColumnName  = 'REPLACE(' + @EnumNameColumnName + ', ''&'', '''')'
SET @EnumNameColumnName  = 'REPLACE(' + @EnumNameColumnName + ', ''.'', '''')'
SET @EnumNameColumnName  = 'REPLACE(' + @EnumNameColumnName + ', ''('', '''')'
SET @EnumNameColumnName  = 'REPLACE(' + @EnumNameColumnName + ', '')'', '''')'

PRINT 'name col name with replace sql = [' + @EnumNameColumnName + ']'

DECLARE @SqlStr VARCHAR(MAX) = 'SELECT ' + @EnumNameColumnName  
+ ' + '' = ''' 
+ ' + LTRIM(RTRIM(STR(' + @EnumValueColumnName + '))) + '','' FROM ' + @TableName + ' ORDER BY ' + @EnumValueColumnName

PRINT 'sql that gets rows for enum body = [' + @SqlStr + ']'

CREATE TABLE #EnumRowsTemp (s VARCHAR(MAX))

INSERT 
INTO #EnumRowsTemp
EXEC(@SqlStr)

--SELECT * FROM #EnumRowsTemp

DECLARE @csharpenumbody VARCHAR(MAX) 
SELECT @csharpenumbody = COALESCE(@csharpenumbody + ' ', '') + s FROM #EnumRowsTemp

--PRINT @csharpenumbody

DECLARE @csharpenum VARCHAR(MAX) = 'public enum ' + @TableName + ' { ' + @csharpenumbody + ' }'

PRINT @csharpenum

SELECT @csharpenum

DROP TABLE #EnumRowsTemp

Please, be critical. One funky thing I didn't understand, how come I have to create and drop this #EnumRowsTemp table and not just "SELECT INTO #EnumRowsTemp" to create the temp table on the fly? I don't know the answer, I tried that and it didn't work. That's probably the least of the problems of this code...

As dirty as it may be... I hope this saves some of you fellow dorks a little bit of time.

I also like to use NOT EXISTS. When it comes to performance if index correctly it should perform the same as a LEFT JOIN or better. Plus its easier to read.

SELECT Column1
FROM TableA a
WHERE NOT EXISTS ( SELECT Column1
                   FROM Tableb b
                   WHERE a.Column1 = b.Column1
                 )

To prevent "Div parent" use margin of "div child":
In parent use these css:

• Float
• Padding
• Border
• Overflow

The other answers so far have a lot of technical information. I will try to answer, as requested, in simple terms.

Serialization is what you do to an instance of an object if you want to dump it to a raw buffer, save it to disk, transport it in a binary stream (e.g., sending an object over a network socket), or otherwise create a serialized binary representation of an object. (For more info on serialization see Java Serialization on Wikipedia).

If you have no intention of serializing your class, you can add the annotation just above your class @SuppressWarnings("serial").

If you are going to serialize, then you have a host of things to worry about all centered around the proper use of UUID. Basically, the UUID is a way to "version" an object you would serialize so that whatever process is de-serializing knows that it's de-serializing properly. I would look at Ensure proper version control for serialized objects for more information.

1. terminal output:

   ping -i 5 google.com | xargs -L 1 -I '{}' date '+%Y-%m-%d %H:%M:%S: {}'

2. file output:

   ping -i 5 google.com | xargs -L 1 -I '{}' date '+%Y-%m-%d %H:%M:%S: {}' > test.txt

3. terminal + file output:

   ping -i 5 google.com | xargs -L 1 -I '{}' date '+%Y-%m-%d %H:%M:%S: {}' | tee test.txt

4. file output background:

   nohup ping -i 5 google.com | xargs -L 1 -I '{}' date '+%Y-%m-%d %H:%M:%S: {}' > test.txt &

If you want to add time to LongDateString Date, you can format it this way:

    DateTime date = DateTime.Now;
    string formattedDate = date.ToLongDateString(); 
    string formattedTime = date.ToShortTimeString();
    Label1.Text = "New Formatted Date: " + formattedDate + " " + formattedTime;

Output:

New Formatted Date: Monday, January 1, 1900 8:53 PM 

If you want to add your own custom animations to UITableView cells, use

[theTableView reloadData];
[theTableView layoutSubviews];
NSArray* visibleViews = [theTableView visibleCells];

to get an array of visible cells. Then add any custom animation to each cell.

Check out this gist I posted for a smooth custom cell animation. https://gist.github.com/floprr/1b7a58e4a18449d962bd

yield basically makes an IEnumerable<T> method behave similarly to a cooperatively (as opposed to preemptively) scheduled thread.

yield return is like a thread calling a "schedule" or "sleep" function to give up control of the CPU. Just like a thread, the IEnumerable<T> method regains controls at the point immediately afterward, with all local variables having the same values as they had before control was given up.

yield break is like a thread reaching the end of its function and terminating.

People talk about a "state machine", but a state machine is all a "thread" really is. A thread has some state (I.e. values of local variables), and each time it is scheduled it takes some action(s) in order to reach a new state. The key point about yield is that, unlike the operating system threads we're used to, the code that uses it is frozen in time until the iteration is manually advanced or terminated.

I was getting this error because i renamed my project and change the name of project in pod file too but my project was referring to old name which was not there and causing this error . I get rid of this by

pod deintegrate

followed by

pod install

Someone's going to post a much better answer than this, but just wanted to make the point that personally I would never store a phone number in any kind of integer field, mainly because:

1. You don't need to do any kind of arithmetic with it, and
2. Sooner or later someone's going to try to (do something like) put brackets around their area code.

In general though, I seem to almost exclusively use:

• INT(11) for anything that is either an ID or references another ID
• DATETIME for time stamps
• VARCHAR(255) for anything guaranteed to be under 255 characters (page titles, names, etc)
• TEXT for pretty much everything else.

Of course there are exceptions, but I find that covers most eventualities.

If you are using http://, as eyze suggested, you will only be able to read the ouput of the PHP script. You can only read the PHP script itself if it is on the same server as your running script. You could then use something like

$Vdata = file_get_contents('/path/to/your/file.php");

As @Glen mentioned in a comment, you basically have two ways around this:

• use an "out of bound" value. For instance, if "data" can never be negative in normal use, return a negative value to indicate it's invalid.
• Use an Integer. Just make sure the "check" method returns an Integer, and you assign it to an Integer not an int. Because if an "int" gets involved along the way, the automatic boxing and unboxing can cause problems.

I've read all the answers but I must say, most of them are just not good enough or even worse.

You could handle this beatifully with DialogService class which responsibility is to show dialog window and return dialog result. I have create sample project demonstrating it's implementation and usage.

here are most important parts:

//we will call this interface in our viewmodels
public interface IDialogService
{
    bool? ShowDialog(object dialogViewModel, string caption);
}

//we need to display logindialog from mainwindow
public class MainWindowViewModel : ViewModelBase
{
    public string Message {get; set;}
    public void ShowLoginCommandExecute()
    {
        var loginViewModel = new LoginViewModel();
        var dialogResult = this.DialogService.ShowDialog(loginViewModel, "Please, log in");

        //after dialog is closed, do someting
        if (dialogResult == true && loginViewModel.IsLoginSuccessful)
        {
            this.Message = string.Format("Hello, {0}!", loginViewModel.Username);
        }
    }
}


public class DialogService : IDialogService
{
    public bool? ShowDialog(object dialogViewModel, string caption)
    {
        var contentView = ViewLocator.GetView(dialogViewModel);
        var dlg = new DialogWindow
        {
            Title = caption
        };
        dlg.PART_ContentControl.Content = contentView;

        return dlg.ShowDialog();
    }
}

Isn't this just simpler? more straitforward, more readable and last but not least easier to debug than EventAggregator or other similar solutions?

as you can see, In my view models I'm have used ViewModel first approach described in my post here: Best practice for calling View from ViewModel in WPF

Of course, in real world, the DialogService.ShowDialog must have more option to configure the dialog, e.g. buttons and commands they should execute. There are different way of doing so, but its out of scope :)

You should use .value and not .innerHTML as it is a input type form element

<html>
  <head>
  <script type="text/javascript">
  function validate() {
  if(myform.fname.value.length==0)
  {
   document.getElementById("fname").value="this is invalid name ";
  }
  }
  </script>
  </head>
  <body>
  <form name="myform">
  First_Name
  <input type=text id=fname name=fname onblur="validate()"> </input>

  <br> <br>
  Last_Name
  <input type=text id=lname name=lname onblur="validate()"> </input>

  <br>
  <input type=button value=check> 

  </form>
  </body>
</html>

use this tag {!! description text !!}

You can just use a simple loop: -

>>> mylist = ['10', '12', '14']
>>> for elem in mylist:
        print elem 

10
12
14

On Ubuntu and Debian

apt-get install python-six

does the trick.

Use sudo apt-get install python-six if you get an error saying "permission denied".

read from assets html file

ViewGroup webGroup;
  String content = readContent("content/ganji.html");

        final WebView webView = new WebView(this);
        webView.loadDataWithBaseURL(null, content, "text/html", "UTF-8", null);

        webGroup.addView(webView);

For Windows 10 it is:

Control Panel > User Accounts > Manage your Credentials > Windows Credentials, search for the git credentials and edit

We had the same problem for accepting monetary values for Euro, since <input type="number" /> can't display Euro decimal and comma format.

We came up with a solution, to use <input type="number" /> for user input. After user types in the value, we format it and display as a Euro format by just switching to <input type="text" />. This is a Javascript solution though, cuz you need a condition to decide between "user is typing" and "display to user" modes.

Here the link with Visuals to our solution: Input field type "Currency" problem solved

Hope this helps in some way!

You may find answers to "Scrolling Vim relative to cursor, custom mapping" useful.

You can use ScrollToPercent(0) from that question to do this.

Write a spider which reads in every html from disk and outputs every "href" attribute of an "a" element (can be done with a parser). Keep in mind which links belong to a certain page (this is common task for a MultiMap datastructre). After this you can produce a mapping file which acts as the input for the 404 handler.

EDIT: I had not realized this was about the data format. You could use

import pandas as pd
import scipy
two_data = pd.DataFrame(data, index=data['Category'])

Then accessing the categories is as simple as

scipy.stats.ttest_ind(two_data.loc['cat'], two_data.loc['cat2'], equal_var=False)

The loc operator accesses rows by label.

As @G Garcia said

one sided or two sided dependent or independent

If you have two independent samples but you do not know that they have equal variance, you can use Welch's t-test. It is as simple as

scipy.stats.ttest_ind(cat1['values'], cat2['values'], equal_var=False)

For reasons to prefer Welch's test, see https://stats.stackexchange.com/questions/305/when-conducting-a-t-test-why-would-one-prefer-to-assume-or-test-for-equal-vari.

For two dependent samples, you can use

scipy.stats.ttest_rel(cat1['values'], cat2['values'])

Use:

$('#example').dataTable({
    aLengthMenu: [
        [25, 50, 100, 200, -1],
        [25, 50, 100, 200, "All"]
    ],
    iDisplayLength: -1
});

Or if using 1.10+

$('#example').dataTable({
    paging: false
});

The option you should use is iDisplayLength:

$('#adminProducts').dataTable({
  'iDisplayLength': 100
});

$('#table').DataTable({
   "lengthMenu": [ [5, 10, 25, 50, -1], [5, 10, 25, 50, "All"] ]
});

It will Load by default all entries.

$('#example').dataTable({
    aLengthMenu: [
        [25, 50, 100, 200, -1],
        [25, 50, 100, 200, "All"]
    ],
    iDisplayLength: -1
});

Or if using 1.10+

$('#example').dataTable({
    paging: false
});

If you want to load by default 25 not all do this.

$('#example').dataTable({
    aLengthMenu: [
        [25, 50, 100, 200, -1],
        [25, 50, 100, 200, "All"]
    ],
});

Yet another node based simple command line server

https://github.com/greggman/servez-cli

Written partly in response to http-server having issues, particularly on windows.

installation

Install node.js then

npm install -g servez

usage

servez [options] [path]

With no path it serves the current folder.

By default it serves index.html for folder paths if it exists. It serves a directory listing for folders otherwise. It also serves CORS headers. You can optionally turn on basic authentication with --username=somename --password=somepass and you can serve https.

Complementary at @Radu answer, As in SQL, you can add the table name in the parameter if you have many table with the same attribute.

.order_by("TableName.name desc")

Use "whereis" command.

$ whereis tomcat8
tomcat8: /usr/sbin/tomcat8 /etc/tomcat8 /usr/libexec/tomcat8 /usr/share/tomcat8

Add the active: false option (documentation)..

$("#accordion").accordion({ header: "h3", collapsible: true, active: false });

WHERE NULLIF(your_column, '') IS NOT NULL

Nowadays (4.5 years on), to make it easier for a human to read, I would just use

WHERE your_column <> ''

While there is a temptation to make the null check explicit...

WHERE your_column <> '' 
      AND your_column IS NOT NULL

...as @Martin Smith demonstrates in the accepted answer, it doesn't really add anything (and I personally shun SQL nulls entirely nowadays, so it wouldn't apply to me anyway!).

or //div[@id='id-74385'][@class='guest clearfix']

Definition: An imperative language uses a sequence of statements to determine how to reach a certain goal. These statements are said to change the state of the program as each one is executed in turn.

Examples: Java is an imperative language. For example, a program can be created to add a series of numbers:

 int total = 0;
 int number1 = 5;
 int number2 = 10;
 int number3 = 15;
 total = number1 + number2 + number3; 

Each statement changes the state of the program, from assigning values to each variable to the final addition of those values. Using a sequence of five statements the program is explicitly told how to add the numbers 5, 10 and 15 together.

Functional languages: The functional programming paradigm was explicitly created to support a pure functional approach to problem solving. Functional programming is a form of declarative programming.

Advantages of Pure Functions: The primary reason to implement functional transformations as pure functions is that pure functions are composable: that is, self-contained and stateless. These characteristics bring a number of benefits, including the following: Increased readability and maintainability. This is because each function is designed to accomplish a specific task given its arguments. The function does not rely on any external state.

Easier reiterative development. Because the code is easier to refactor, changes to design are often easier to implement. For example, suppose you write a complicated transformation, and then realize that some code is repeated several times in the transformation. If you refactor through a pure method, you can call your pure method at will without worrying about side effects.

Easier testing and debugging. Because pure functions can more easily be tested in isolation, you can write test code that calls the pure function with typical values, valid edge cases, and invalid edge cases.

For OOP People or Imperative languages:

Object-oriented languages are good when you have a fixed set of operations on things and as your code evolves, you primarily add new things. This can be accomplished by adding new classes which implement existing methods and the existing classes are left alone.

Functional languages are good when you have a fixed set of things and as your code evolves, you primarily add new operations on existing things. This can be accomplished by adding new functions which compute with existing data types and the existing functions are left alone.

Cons:

It depends on the user requirements to choose the way of programming, so there is harm only when users don’t choose the proper way.

When evolution goes the wrong way, you have problems:

• Adding a new operation to an object-oriented program may require editing many class definitions to add a new method
• Adding a new kind of thing to a functional program may require editing many function definitions to add a new case.

This will work if you are not blocking.

If you are planing on doing sleeps, its absolutely imperative that you use the event to do the sleep. If you leverage the event to sleep, if someone tells you to stop while "sleeping" it will wake up. If you use time.sleep() your thread will only stop after it wakes up.

import threading
import time

duration = 2

def main():
    t1_stop = threading.Event()
    t1 = threading.Thread(target=thread1, args=(1, t1_stop))

    t2_stop = threading.Event()
    t2 = threading.Thread(target=thread2, args=(2, t2_stop))

    time.sleep(duration)
    # stops thread t2
    t2_stop.set()

def thread1(arg1, stop_event):
    while not stop_event.is_set():
        stop_event.wait(timeout=5)

def thread2(arg1, stop_event):
    while not stop_event.is_set():
        stop_event.wait(timeout=5)

I contacted GitHub to say that github.io-hosted SVGs are no longer displayed in GitHub READMEs. I received this reply:

We have had to disable svg image rendering on GitHub.com due to potential cross site scripting vulnerabilities.

Let's say you have defined an empty array:

$myArr = array();

If you want to simply add an element, e.g. 'New Element to Array', write

$myArr[] = 'New Element to Array';

if you are calling the data from the database, below code will work fine

$sql = "SELECT $element FROM $table";
$query = mysql_query($sql);
if(mysql_num_rows($query) > 0)//if it finds any row
{
   while($result = mysql_fetch_object($query))
   {
      //adding data to the array
      $myArr[] = $result->$element;
   }
}

First globally declare

Context mContext;

pass context with the constructor, by modifying it.

public FeedAdapter(List<Post> myDataset, Context context) {
    mDataset = myDataset;
    this.mContext = context;
}

then use the mContext whereever you need it

On linux, if you can afford the run time cost (for debugging), you can use valgrind with the massif tool:

http://valgrind.org/docs/manual/ms-manual.html

It is heavy weight, but very useful.

For PHP's PHPSESSID variable, this function works:

function getPHPSessId() {
    var phpSessionId = document.cookie.match(/PHPSESSID=[A-Za-z0-9]+\;/i);

    if(phpSessionId == null) 
        return '';

    if(typeof(phpSessionId) == 'undefined')
        return '';

    if(phpSessionId.length <= 0)
        return '';

    phpSessionId = phpSessionId[0];

    var end = phpSessionId.lastIndexOf(';');
    if(end == -1) end = phpSessionId.length;

    return phpSessionId.substring(10, end);
}

I had similar problem . Two components communicating with each other was using a queue .

First component was not doing json.dumps before putting message to queue. So the JSON string generated by receiving component was in single quotes. This was causing error

 Expecting property name enclosed in double quotes

Adding json.dumps started creating correctly formatted JSON & solved issue.

The following code will compare each item with other list of items using contains() method.Length of for loop must be bigger size() of bigger list then only it will compare all the values of both list.

List<String> str = new ArrayList<String>();
str.add("first");
str.add("second");
str.add("third");
List<String> str1 = new ArrayList<String>();
str1.add("first");
str1.add("second");
str1.add("third1");
for (int i = 0; i<str1.size(); i++)
{
System.out.println(str.contains(str1.get(i)));
}

Output is true true false

Look at the r.status_code attribute:

if r.status_code == 404:
    # A 404 was issued.

Demo:

>>> import requests
>>> r = requests.get('http://httpbin.org/status/404')
>>> r.status_code
404

If you want requests to raise an exception for error codes (4xx or 5xx), call r.raise_for_status():

>>> r = requests.get('http://httpbin.org/status/404')
>>> r.raise_for_status()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "requests/models.py", line 664, in raise_for_status
    raise http_error
requests.exceptions.HTTPError: 404 Client Error: NOT FOUND
>>> r = requests.get('http://httpbin.org/status/200')
>>> r.raise_for_status()
>>> # no exception raised.

You can also test the response object in a boolean context; if the status code is not an error code (4xx or 5xx), it is considered ‘true’:

if r:
    # successful response

If you want to be more explicit, use if r.ok:.

File.WriteAllText(file,content)

create write close

File.WriteAllBytes--   type binary

:)