You have to start somewhere the correct code should be:
The code to return the minimum value
l = [ '0.0', '1','-1.2']
x = l[0]
for i in l:
if i < x:
x = i
print x
But again it's good to use directly integers instead of using quotations ''
This way!
l = [ 0.0, 1,-1.2]
x = l[0]
for i in l:
if i < x:
x = i
print x
The method used in this answer (backticks) is deprecated in later versions of Python 2, and removed in Python 3. Use the str()
function instead.
You can use :
string = 'string'
for i in range(11):
string +=`i`
print string
It will print string012345678910
.
To get string0, string1 ..... string10
you can use this as @YOU suggested
>>> string = "string"
>>> [string+`i` for i in range(11)]
You can use :
string = 'string'
for i in range(11):
string +=str(i)
print string
It will print string012345678910
.
To get string0, string1 ..... string10
you can use this as @YOU suggested
>>> string = "string"
>>> [string+str(i) for i in range(11)]
from random import randint
x = [randint(0, 9) for p in range(0, 10)]
This generates 10 pseudorandom integers in range 0 to 9 inclusive.
Integer.valueOf()
returns an Integer object, while Integer.parseInt()
returns an int
primitive.
If you want to concatenate int or floats to a string you must use this:
i = 123
a = "foobar"
s = a + str(i)
Try maybe this way
try{
double d= Double.valueOf(someString);
if (d==(int)d){
System.out.println("integer"+(int)d);
}else{
System.out.println("double"+d);
}
}catch(Exception e){
System.out.println("not number");
}
But all numbers outside Integers range (like "-1231231231231231238") will be treated as doubles. If you want to get rid of that problem you can try it this way
try {
double d = Double.valueOf(someString);
if (someString.matches("\\-?\\d+")){//optional minus and at least one digit
System.out.println("integer" + d);
} else {
System.out.println("double" + d);
}
} catch (Exception e) {
System.out.println("not number");
}
This is a very generic function I have written to generate random unique/non-unique integers for an array. Assume the last parameter to be true in this scenario for this answer.
/* Creates an array of random integers between the range specified
len = length of the array you want to generate
min = min value you require
max = max value you require
unique = whether you want unique or not (assume 'true' for this answer)
*/
function _arrayRandom(len, min, max, unique) {
var len = (len) ? len : 10,
min = (min !== undefined) ? min : 1,
max = (max !== undefined) ? max : 100,
unique = (unique) ? unique : false,
toReturn = [], tempObj = {}, i = 0;
if(unique === true) {
for(; i < len; i++) {
var randomInt = Math.floor(Math.random() * ((max - min) + min));
if(tempObj['key_'+ randomInt] === undefined) {
tempObj['key_'+ randomInt] = randomInt;
toReturn.push(randomInt);
} else {
i--;
}
}
} else {
for(; i < len; i++) {
toReturn.push(Math.floor(Math.random() * ((max - min) + min)));
}
}
return toReturn;
}
Here the 'tempObj' is a very useful obj since every random number generated will directly check in this tempObj if that key already exists, if not, then we reduce the i by one since we need 1 extra run since the current random number already exists.
In your case, run the following
_arrayRandom(8, 1, 100, true);
That's all.
#include <stdint.h> // uint32_t [available since C99]
/// Determine the number of digits for a 32 bit integer.
/// - Uses at most 4 comparisons.
/// - (cX) 2014 [email protected]
/// - \see http://stackoverflow.com/questions/1489830/#27669966
/** #d == Number length vs Number of comparisons == #c
\code
#d | #c #d | #c
---+--- ---+---
10 | 4 5 | 4
9 | 4 4 | 4
8 | 3 3 | 3
7 | 3 2 | 3
6 | 3 1 | 3
\endcode
*/
unsigned NumDigits32bs(uint32_t x) {
return // Num-># Digits->[0-9] 32->bits bs->Binary Search
( x >= 100000u // [6-10] [1-5]
? // [6-10]
( x >= 10000000u // [8-10] [6-7]
? // [8-10]
( x >= 100000000u // [9-10] [8]
? // [9-10]
( x >= 1000000000u // [10] [9]
? 10
: 9
)
: 8
)
: // [6-7]
( x >= 1000000u // [7] [6]
? 7
: 6
)
)
: // [1-5]
( x >= 100u // [3-5] [1-2]
? // [3-5]
( x >= 1000u // [4-5] [3]
? // [4-5]
( x >= 10000u // [5] [4]
? 5
: 4
)
: 3
)
: // [1-2]
( x >= 10u // [2] [1]
? 2
: 1
)
)
);
}
It may be very simple, but couldn't you just round it up then minus 1? For example:
number=1.5
round(number)-1
> 1
no String API, no utils, no type conversion, just pure java iteration ->
public static int getNumberOfDigits(int input) {
int numOfDigits = 1;
int base = 1;
while (input >= base * 10) {
base = base * 10;
numOfDigits++;
}
return numOfDigits;
}
You can go long for bigger values if you please.
I think it is telling you exactly what is wrong. You cannot compare an integer with a varchar. PostgreSQL is strict and does not do any magic typecasting for you. I'm guessing SQLServer does typecasting automagically (which is a bad thing).
If you want to compare these two different beasts, you will have to cast one to the other using the casting syntax ::
.
Something along these lines:
create view view1
as
select table1.col1,table2.col1,table3.col3
from table1
inner join
table2
inner join
table3
on
table1.col4::varchar = table2.col5
/* Here col4 of table1 is of "integer" type and col5 of table2 is of type "varchar" */
/* ERROR: operator does not exist: integer = character varying */
....;
Notice the varchar
typecasting on the table1.col4.
Also note that typecasting might possibly render your index on that column unusable and has a performance penalty, which is pretty bad. An even better solution would be to see if you can permanently change one of the two column types to match the other one. Literately change your database design.
Or you could create a index on the casted values by using a custom, immutable function which casts the values on the column. But this too may prove suboptimal (but better than live casting).
Rather than over complicate things, why not just a simple
if type(var) is int:
To get the value equivalent to your C cast, just bitwise and with the appropriate mask. e.g. if unsigned long
is 32 bit:
>>> i = -6884376
>>> i & 0xffffffff
4288082920
or if it is 64 bit:
>>> i & 0xffffffffffffffff
18446744073702667240
Do be aware though that although that gives you the value you would have in C, it is still a signed value, so any subsequent calculations may give a negative result and you'll have to continue to apply the mask to simulate a 32 or 64 bit calculation.
This works because although Python looks like it stores all numbers as sign and magnitude, the bitwise operations are defined as working on two's complement values. C stores integers in twos complement but with a fixed number of bits. Python bitwise operators act on twos complement values but as though they had an infinite number of bits: for positive numbers they extend leftwards to infinity with zeros, but negative numbers extend left with ones. The &
operator will change that leftward string of ones into zeros and leave you with just the bits that would have fit into the C value.
Displaying the values in hex may make this clearer (and I rewrote to string of f's as an expression to show we are interested in either 32 or 64 bits):
>>> hex(i)
'-0x690c18'
>>> hex (i & ((1 << 32) - 1))
'0xff96f3e8'
>>> hex (i & ((1 << 64) - 1)
'0xffffffffff96f3e8L'
For a 32 bit value in C, positive numbers go up to 2147483647 (0x7fffffff), and negative numbers have the top bit set going from -1 (0xffffffff) down to -2147483648 (0x80000000). For values that fit entirely in the mask, we can reverse the process in Python by using a smaller mask to remove the sign bit and then subtracting the sign bit:
>>> u = i & ((1 << 32) - 1)
>>> (u & ((1 << 31) - 1)) - (u & (1 << 31))
-6884376
Or for the 64 bit version:
>>> u = 18446744073702667240
>>> (u & ((1 << 63) - 1)) - (u & (1 << 63))
-6884376
This inverse process will leave the value unchanged if the sign bit is 0, but obviously it isn't a true inverse because if you started with a value that wouldn't fit within the mask size then those bits are gone.
This is a corrected version of https://stackoverflow.com/a/33017514/5973334
This will try to parse a string and return either int
or float
depending on what the string represents.
It might rise parsing exceptions or have some unexpected behaviour.
def get_int_or_float(v):
number_as_float = float(v)
number_as_int = int(number_as_float)
return number_as_int if number_as_float == number_as_int else
number_as_float
int i = (Integer) object; //Type is Integer.
int i = Integer.parseInt((String)object); //Type is String.
There is one case, that is not mentioned above:
int res = 1;
while (res != 0) {
res *= 2;
}
System.out.println(res);
will produce:
0
This case was discussed here: Integer overflow produces Zero.
Here's a blog post describing the creation of an IsInteger
UDF.
Basically, it recommends adding '.e0'
to the value and using IsNumeric
. In this way, anything that already had a decimal point now has two decimal points, causing IsNumeric
to be false, and anything already expressed in scientific notation is invalidated by the e0
.
Unsigned integers are far more likely to catch you in a particular trap than are signed integers. The trap comes from the fact that while 1 & 3 above are correct, both types of integers can be assigned a value outside the bounds of what it can "hold" and it will be silently converted.
unsigned int ui = -1;
signed int si = -1;
if (ui < 0) {
printf("unsigned < 0\n");
}
if (si < 0) {
printf("signed < 0\n");
}
if (ui == si) {
printf("%d == %d\n", ui, si);
printf("%ud == %ud\n", ui, si);
}
When you run this, you'll get the following output even though both values were assigned to -1 and were declared differently.
signed < 0
-1 == -1
4294967295d == 4294967295d
I was just dealing with this issue in some code I was writing. My solution was to use a bitwise and.
var j = bool & 1;
A quicker way to deal with a constant problem would be to create a function. It's more readable by other people, better for understanding at the maintenance stage, and gets rid of the potential for writing something wrong.
function toInt( val ) {
return val & 1;
}
var j = toInt(bool);
Edit - September 10th, 2014
No conversion using a ternary operator with the identical to operator is faster in Chrome for some reason. Makes no sense as to why it's faster, but I suppose it's some sort of low level optimization that makes sense somewhere along the way.
var j = boolValue === true ? 1 : 0;
Test for yourself: http://jsperf.com/boolean-int-conversion/2
In FireFox and Internet Explorer, using the version I posted is faster generally.
Edit - July 14th, 2017
Okay, I'm not going to tell you which one you should or shouldn't use. Every freaking browser has been going up and down in how fast they can do the operation with each method. Chrome at one point actually had the bitwise & version doing better than the others, but then it suddenly was much worse. I don't know what they're doing, so I'm just going to leave it at who cares. There's rarely any reason to care about how fast an operation like this is done. Even on mobile it's a nothing operation.
Also, here's a newer method for adding a 'toInt' prototype that cannot be overwritten.
Object.defineProperty(Boolean.prototype, "toInt", { value: function()
{
return this & 1;
}});
Use the body of this loop to do whatever you want to with the digits
for digit in map(int, str(my_number)):
System.out.println(NumberFormat.getNumberInstance(Locale.US).format(35634646));
Output: 35,634,646
You are exceeding the length of int datatype. You can use UNSIGNED attribute to support that value.
SIGNED INT can support till 2147483647 and with UNSIGNED INT allows double than this. After this you still want to save data than use CHAR or VARCHAR with length 10
int[] arr = {111, 111, 110, 101, 101, 102, 115, 112};
/* for ascending order */
System.out.println(Arrays.toString(getSortedArray(arr)));
/*for descending order */
System.out.println(Arrays.toString(getSortedArray(arr)));
private int[] getSortedArray(int[] k){
int localIndex =0;
for(int l=1;l<k.length;l++){
if(l>1){
localIndex = l;
while(true){
k = swapelement(k,l);
if(l-- == 1)
break;
}
l = localIndex;
}else
k = swapelement(k,l);
}
return k;
}
private int[] swapelement(int[] ar,int in){
int temp =0;
if(ar[in]<ar[in-1]){
temp = ar[in];
ar[in]=ar[in-1];
ar[in-1] = temp;
}
return ar;
}
private int[] getDescOrder(int[] byt){
int s =-1;
for(int i = byt.length-1;i>=0;--i){
int k = i-1;
while(k >= 0){
if(byt[i]>byt[k]){
s = byt[k];
byt[k] = byt[i];
byt[i] = s;
}
k--;
}
}
return byt;
}
output:-
ascending order:-
101, 101, 102, 110, 111, 111, 112, 115
descending order:-
115, 112, 111, 111, 110, 102, 101, 101
Integer
objects are immutable, so you cannot modify the value once they have been created. You will need to create a new Integer
and replace the existing one.
playerID = new Integer(playerID.intValue() + 1);
They are completely equivalent when used with printf()
. Personally, I prefer %d
, it's used more often (should I say "it's the idiomatic conversion specifier for int
"?).
(One difference between %i
and %d
is that when used with scanf()
, then %d
always expects a decimal integer, whereas %i
recognizes the 0
and 0x
prefixes as octal and hexadecimal, but no sane programmer uses scanf()
anyway so this should not be a concern.)
If you can use C libraries then one method would be to use sprintf, e.g.
#include <cstdio>
char s[32];
int len = sprintf(s, "%d", i);
I posted the wrong answer here, sorry. fixed.
This is an old question, but I love this trick:
~~"2.123"; //2
~~"5"; //5
The double bitwise negative drops off anything after the decimal point AND converts it to a number format. I've been told it's slightly faster than calling functions and whatnot, but I'm not entirely convinced.
EDIT: Another method I just saw here (a question about the javascript >>> operator, which is a zero-fill right shift) which shows that shifting a number by 0 with this operator converts the number to a uint32 which is nice if you also want it unsigned. Again, this converts to an unsigned integer, which can lead to strange behaviors if you use a signed number.
"-2.123" >>> 0; // 4294967294
"2.123" >>> 0; // 2
"-5" >>> 0; // 4294967291
"5" >>> 0; // 5
I would not typecast away the const in the last line since it is there for a reason. If you can't live with a const char* then you better copy the char array like:
char* char_type = new char[temp_str.length()];
strcpy(char_type, temp_str.c_str());
Character.getNumericValue(c)
The java.lang.Character.getNumericValue(char ch)
returns the int
value that the specified Unicode character represents. For example, the character '\u216C'
(the roman numeral fifty) will return an int with a value of 50.
The letters A-Z in their uppercase ('\u0041' through '\u005A')
, lowercase ('\u0061' through '\u007A')
, and full width variant ('\uFF21' through '\uFF3A' and '\uFF41' through '\uFF5A')
forms have numeric values from 10 through 35. This is independent of the Unicode specification, which does not assign numeric values to these char values.
This method returns the numeric value of the character, as a nonnegative int value;
-2 if the character has a numeric value that is not a nonnegative integer;
-1 if the character has no numeric value.
And here is the link.
Actually the size in bits of the int
, short
, long
depends on the compiler implementation.
E.g. on my Ubuntu 64 bit I have short
in 32
bits, when on another one 32bit Ubuntu version it is 16
bit.
There are good answers here, but I don’t see any demonstrations of bitwise operations. Like Visser (the currently accepted answer) says, Java signs integers by default (Java 8 has unsigned integers, but I have never used them). Without further ado, let‘s do it...
What happens if you need to write an unsigned integer to IO? Practical example is when you want to output the time according to RFC 868. This requires a 32-bit, big-endian, unsigned integer that encodes the number of seconds since 12:00 A.M. January 1, 1900. How would you encode this?
Declare a byte array of 4 bytes (32 bits)
Byte my32BitUnsignedInteger[] = new Byte[4] // represents the time (s)
This initializes the array, see Are byte arrays initialised to zero in Java?. Now you have to fill each byte in the array with information in the big-endian order (or little-endian if you want to wreck havoc). Assuming you have a long containing the time (long integers are 64 bits long in Java) called secondsSince1900
(Which only utilizes the first 32 bits worth, and you‘ve handled the fact that Date references 12:00 A.M. January 1, 1970), then you can use the logical AND to extract bits from it and shift those bits into positions (digits) that will not be ignored when coersed into a Byte, and in big-endian order.
my32BitUnsignedInteger[0] = (byte) ((secondsSince1900 & 0x00000000FF000000L) >> 24); // first byte of array contains highest significant bits, then shift these extracted FF bits to first two positions in preparation for coersion to Byte (which only adopts the first 8 bits)
my32BitUnsignedInteger[1] = (byte) ((secondsSince1900 & 0x0000000000FF0000L) >> 16);
my32BitUnsignedInteger[2] = (byte) ((secondsSince1900 & 0x000000000000FF00L) >> 8);
my32BitUnsignedInteger[3] = (byte) ((secondsSince1900 & 0x00000000000000FFL); // no shift needed
Our my32BitUnsignedInteger
is now equivalent to an unsigned 32-bit, big-endian integer that adheres to the RCF 868 standard. Yes, the long datatype is signed, but we ignored that fact, because we assumed that the secondsSince1900 only used the lower 32 bits). Because of coersing the long into a byte, all bits higher than 2^7 (first two digits in hex) will be ignored.
Source referenced: Java Network Programming, 4th Edition.
if you are dealing with currency values and formatting a lot then it might be worth to add tiny accounting.js which handles lot of edge cases and localization:
// Default usage:
accounting.formatMoney(12345678); // $12,345,678.00
// European formatting (custom symbol and separators), could also use options object as second param:
accounting.formatMoney(4999.99, "€", 2, ".", ","); // €4.999,99
// Negative values are formatted nicely, too:
accounting.formatMoney(-500000, "£ ", 0); // £ -500,000
// Simple `format` string allows control of symbol position [%v = value, %s = symbol]:
accounting.formatMoney(5318008, { symbol: "GBP", format: "%v %s" }); // 5,318,008.00 GBP
The shortest way without declaring the variable is with Type Hints :
s$ = 123 ' s = "123"
i% = "123" ' i = 123
This will not compile with Option Explicit
. The types will not be Variant
but String
and Integer
Here's my version:
int xmin = min(x1,x2)
, xmax = max(x1,x2)
, ymin = min(y1,y2)
, ymax = max(y1,y2);
for (int i = xmin; i < xmax; ++i)
if (ymin <= i && i <= ymax)
return true;
return false;
Unless you're running some high-performance range-checker on billions of widely-spaced integers, our versions should perform similarly. My point is, this is micro-optimization.
I had the same problem myself. I'm not sure if you got it to work though, but what I had to was:
EditText cypherInput;
cypherInput = (EditText)findViewById(R.id.input_cipherValue);
int cypher = Integer.parseInt(cypherInput.getText().toString());
The third line of code caused the app to crash without using the .getText() before the .toString().
Just for reference, here is my XML:
<EditText
android:id="@+id/input_cipherValue"
android:inputType="number"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
/*Function return size of string and convert signed *
*integer to ascii value and store them in array of *
*character with NULL at the end of the array */
int itoa(int value,char *ptr)
{
int count=0,temp;
if(ptr==NULL)
return 0;
if(value==0)
{
*ptr='0';
return 1;
}
if(value<0)
{
value*=(-1);
*ptr++='-';
count++;
}
for(temp=value;temp>0;temp/=10,ptr++);
*ptr='\0';
for(temp=value;temp>0;temp/=10)
{
*--ptr=temp%10+'0';
count++;
}
return count;
}
Why don't you cast your integer to String and get length like this :
int data = 123;
int data_len = String(data).length();
Most of the time you don't need conversion:
>>>array([True,True,False,False]) + array([1,2,3,4])
array([2, 3, 3, 4])
The right way to do it is:
yourArray.astype(int)
or
yourArray.astype(float)
Your question is "Why doesn't Java support unsigned ints"?
And my answer to your question is that Java wants that all of it's primitive types: byte, char, short, int and long should be treated as byte, word, dword and qword respectively, exactly like in assembly, and the Java operators are signed operations on all of it's primitive types except for char, but only on char they are unsigned 16 bit only.
So static methods suppose to be the unsigned operations also for both 32 and 64 bit.
You need final class, whose static methods can be called for the unsigned operations.
You can create this final class, call it whatever name you want and implement it's static methods.
If you have no idea about how to implement the static methods then this link may help you.
In my opinion, Java is not similar to C++ at all, if it neither support unsigned types nor operator overloading, so I think that Java should be treated as completely different language from both C++ and from C.
It is also completely different in the name of the languages by the way.
So I don't recommend in Java to type code similar to C and I don't recommend to type code similar to C++ at all, because then in Java you won't be able to do what you want to do next in C++, i.e. the code won't continue to be C++ like at all and for me this is bad to code like that, to change the style in the middle.
I recommend to write and use static methods also for the signed operations, so you don't see in the code mixture of operators and static methods for both signed and unsigned operations, unless you need only signed operations in the code, and it's okay to use the operators only.
Also I recommend to avoid using short, int and long primitive types, and use word, dword and qword respectively instead, and you are about call the static methods for unsigned operations and/or signed operations instead of using operators.
If you are about to do signed operations only and use the operators only in the code, then this is okay to use these primitive types short, int and long.
Actually word, dword and qword don't exist in the language, but you can create new class for each and the implementation of each should be very easy:
The class word holds the primitive type short only, the class dword holds the primitive type int only and the class qword holds the primitive type long only. Now all the unsigned and the signed methods as static or not as your choice, you can implement in each class, i.e. all the 16 bit operations both unsigned and signed by giving meaning names on the word class, all the 32 bit operations both unsigned and signed by giving meaning names on the dword class and all the 64 bit operations both unsigned and signed by giving meaning names on the qword class.
If you don't like giving too many different names for each method, you can always use overloading in Java, good to read that Java didn't remove that too!
If you want methods rather than operators for 8 bit signed operations and methods for 8 bit unsigned operations that have no operators at all, then you can create the Byte class (note that the first letter 'B' is capital, so this is not the primitive type byte) and implement the methods in this class.
About passing by value and passing by reference:
If I am not wrong, like in C#, primitive objects are passed by value naturally, but class objects are passed by reference naturally, so that means that objects of type Byte, word, dword and qword will be passed by reference and not by value by default. I wish Java had struct objects as C# has, so all Byte, word, dword and qword could be implemented to be struct instead of class, so by default they were passed by value and not by reference by default, like any struct object in C#, like the primitive types, are passed by value and not by reference by default, but because that Java is worse than C# and we have to deal with that, then there is only classes and interfaces, that are passed by reference and not by value by default. So if you want to pass Byte, word, dword and qword objects by value and not by reference, like any other class object in Java and also in C#, you will have to simply use the copy constructor and that's it.
That's the only solution that I can think about. I just wish that I could just typedef the primitive types to word, dword and qword, but Java neither support typedef nor using at all, unlike C# that supports using, which is equivalent to the C's typedef.
About output:
For the same sequence of bits, you can print them in many ways: As binary, as decimal (like the meaning of %u in C printf), as octal (like the meaning of %o in C printf), as hexadecimal (like the meaning of %x in C printf) and as integer (like the meaning of the %d in C printf).
Note that C printf doesn't know the type of the variables being passed as parameters to the function, so printf knows the type of each variable only from the char* object passed to the first parameter of the function.
So in each of the classes: Byte, word, dword and qword, you can implement print method and get the functionality of printf, even though the primitive type of the class is signed, you still can print it as unsigned by following some algorithm involving logical and shift operations to get the digits to print to the output.
Unfortunately the link I gave you doesn't show how to implement these print methods, but I am sure you can google for the algorithms you need to implement these print methods.
That's all I can answer your question and suggest you.
TryParse and the Exception Tax
Parse throws an exception if the conversion from a string to the specified datatype fails, whereas TryParse explicitly avoids throwing an exception.
There are also these 'ways':
>>> dict.fromkeys(range(1, 4))
{1: None, 2: None, 3: None}
>>> dict(zip(range(1, 4), range(1, 4)))
{1: 1, 2: 2, 3: 3}
One more thing that I don't see in previous answers: In Java the primitive wrappers classes like Integer, Double, Float, Boolean... and String are suposed to be invariant, so that when you pass an instance of those classes the invoked method couldn't alter your data in any way, in opositión with most of other classes, which internal data could be altered by its public methods. So that this classes only has 'getter' methods, no 'setters', besides the constructor.
In a java program String literals are stored in a separate portion of heap memory, only a instance for literal, to save memory reusing those instances
Keep it simple...
$intArray = array ();
$strArray = explode(',', $string);
foreach ($strArray as $value)
$intArray [] = intval ($value);
Why are you looking for other ways? Looping does the job without pain. If performance is your concern, you can go with json_decode ()
. People have posted how to use that, so I am not including it here.
Note: When using == operator instead of === , your string values are automatically converted into numbers (e.g. integer or double) if they form a valid number without quotes. For example:
$str = '1';
($str == 1) // true but
($str === 1) //false
Thus, == may solve your problem, is efficient, but will break if you use === in comparisons.
int
s are value types; they can never be null
. Instead, if the parsing failed, parseInt
will throw a NumberFormatException
that you need to catch.
Yes, it is possible since lists are mutable.
Look at the built-in enumerate()
function to get an idea how to iterate over the list and find each entry's index (which you can then use to assign to the specific list item).
Best solution is randint
, but this function produce integer numbers.
You can use rand
with rounding function
r = round(a + (b-a).*rand(m,n));
This produces Real random number between a and b , size of output matrix is m*n
?++11 finally resolves this providing std::to_string
.
Also boost::lexical_cast
is handy tool for older compilers.
Use the BigInteger
class that is a part of the Java library.
http://java.sun.com/j2se/1.5.0/docs/api/java/math/BigInteger.html
i % 2 == 0
The most decent way in my opinion is ``.
i = 32 --> `i` == '32'
Here answer for your code as whole:
key =10
files = ("ME%i.txt" % i for i in range(key))
#opening
files = [ open(filename, 'w') for filename in files]
# processing
for i, file in zip(range(key),files):
file.write(str(i))
# closing
for openfile in files:
openfile.close()
This in an example that can be used for example to feed a database key, I sometimes use instead of using AUTOINCREMENT options.
import datetime
dt = datetime.datetime.now()
seq = int(dt.strftime("%Y%m%d%H%M%S"))
Easier solution;
#/bin/bash
if (( ${1:-2} >= 2 )); then
echo "First parameter must be 0 or 1"
fi
# rest of script...
Output
$ ./test
First parameter must be 0 or 1
$ ./test 0
$ ./test 1
$ ./test 4
First parameter must be 0 or 1
$ ./test 2
First parameter must be 0 or 1
Explanation
(( ))
- Evaluates the expression using integers.${1:-2}
- Uses parameter expansion to set a value of 2
if undefined.>= 2
- True if the integer is greater than or equal to two 2
.try Integer.toString(integer value);
method as
ed = (EditText)findViewById(R.id.box);
int x = 10;
ed.setText(Integer.toString(x));
There are five ways to convert The First Way :
String str = " 123" ;
int i = Integer.parse(str);
output : 123
The second way :
String str = "hello123world";
int i = Integer.parse(str.replaceAll("[\\D]" , "" ) );
output : 123
The Third Way :
String str"123";
int i = new Integer(str);
output "123
The Fourth Way :
String str"123";
int i = Integer.valueOf(Str);
output "123
The Fifth Way :
String str"123";
int i = Integer.decode(str);
output "123
There could be other ways But that's what I remember now
First off, it is perfectly feasible to use R successfully for years and not need to know the answer to this question. R handles the differences between the (usual) numerics and integers for you in the background.
> is.numeric(1)
[1] TRUE
> is.integer(1)
[1] FALSE
> is.numeric(1L)
[1] TRUE
> is.integer(1L)
[1] TRUE
(Putting capital 'L' after an integer forces it to be stored as an integer.)
As you can see "integer" is a subset of "numeric".
> .Machine$integer.max
[1] 2147483647
> .Machine$double.xmax
[1] 1.797693e+308
Integers only go to a little more than 2 billion, while the other numerics can be much bigger. They can be bigger because they are stored as double precision floating point numbers. This means that the number is stored in two pieces: the exponent (like 308 above, except in base 2 rather than base 10), and the "significand" (like 1.797693 above).
Note that 'is.integer' is not a test of whether you have a whole number, but a test of how the data are stored.
One thing to watch out for is that the colon operator, :
, will return integers if the start and end points are whole numbers. For example, 1:5
creates an integer
vector of numbers from 1 to 5. You don't need to append the letter L
.
> class(1:5)
[1] "integer"
Reference: https://www.quora.com/What-is-the-difference-between-numeric-and-integer-in-R
This work for me.
("your string goes here").All(char.IsDigit)
Try this. This solution is a bit risky. There are no checks. The string must only have hex values and the string length must match the return type size. But no need for extra headers.
char hextob(char ch)
{
if (ch >= '0' && ch <= '9') return ch - '0';
if (ch >= 'A' && ch <= 'F') return ch - 'A' + 10;
if (ch >= 'a' && ch <= 'f') return ch - 'a' + 10;
return 0;
}
template<typename T>
T hextot(char* hex)
{
T value = 0;
for (size_t i = 0; i < sizeof(T)*2; ++i)
value |= hextob(hex[i]) << (8*sizeof(T)-4*(i+1));
return value;
};
Usage:
int main()
{
char str[4] = {'f','f','f','f'};
std::cout << hextot<int16_t>(str) << "\n";
}
Note: the length of the string must be divisible by 2
It's better to avoid unnecessary autoboxing for 2 reasons.
For one thing, it's a bit slower than int < int
, as you're (sometimes) creating an extra object;
void doSomethingWith(Integer integerObject){ ...
int i = 1000;
doSomethingWith(i);//gets compiled into doSomethingWith(Integer.valueOf(i));
The bigger issue is that hidden autoboxing can hide exceptions:
void doSomethingWith (Integer count){
if (count>0) // gets compiled into count.intValue()>0
Calling this method with null
will throw a NullPointerException
.
The split between primitives and wrapper objects in java was always described as a kludge for speed. Autoboxing almost hides this, but not quite - it's cleaner just to keep track of the type. So if you've got an Integer object, you can just call compare()
or intValue()
, and if you've got the primitive just check the value directly.
>>> ord('a')
97
>>> chr(97)
'a'
DateTime.ParseExact(monthName, "MMMM", CultureInfo.CurrentCulture ).Month
Although, for your purposes, you'll probably be better off just creating a Dictionary<string, int>
mapping the month's name to its value.
Python 2.7.9 auto promotes numbers. For a case where one is unsure to use int() or long().
>>> a = int("123")
>>> type(a)
<type 'int'>
>>> a = int("111111111111111111111111111111111111111111111111111")
>>> type(a)
<type 'long'>
Making your own itoa
is also easy, try this :
char* itoa(int i, char b[]){
char const digit[] = "0123456789";
char* p = b;
if(i<0){
*p++ = '-';
i *= -1;
}
int shifter = i;
do{ //Move to where representation ends
++p;
shifter = shifter/10;
}while(shifter);
*p = '\0';
do{ //Move back, inserting digits as u go
*--p = digit[i%10];
i = i/10;
}while(i);
return b;
}
or use the standard sprintf()
function.
Will be more portable in case of extending to other alphabets:
char='abcdefghijklmnopqrstuvwxyz'[code]
or, to be more compatible (with our beloved IE):
char='abcdefghijklmnopqrstuvwxyz'.charAt(code);
That's how I remembered 2147483647
:
Write these horizontally:
214_48_64_
and insert:
^ ^ ^
7 3 7 - which is Boeing's airliner jet (thanks, sgorozco)
Now you've got 2147483647.
Hope this helps at least a bit.
With the UInt32 in the proper little-endian format, here are two simple conversion functions:
public uint GetIpAsUInt32(string ipString)
{
IPAddress address = IPAddress.Parse(ipString);
byte[] ipBytes = address.GetAddressBytes();
Array.Reverse(ipBytes);
return BitConverter.ToUInt32(ipBytes, 0);
}
public string GetIpAsString(uint ipVal)
{
byte[] ipBytes = BitConverter.GetBytes(ipVal);
Array.Reverse(ipBytes);
return new IPAddress(ipBytes).ToString();
}
You can cast to float by doing c = a / float(b)
. If the numerator or denominator is a float, then the result will be also.
A caveat: as commenters have pointed out, this won't work if b
might be something other than an integer or floating-point number (or a string representing one). If you might be dealing with other types (such as complex numbers) you'll need to either check for those or use a different method.
The guarantees the standard gives you go like this:
1 == sizeof(char) <= sizeof(short) <= sizeof (int) <= sizeof(long) <= sizeof(long long)
So it's perfectly valid for sizeof (int)
and sizeof (long)
to be equal, and many platforms choose to go with this approach. You will find some platforms where int
is 32 bits, long
is 64 bits, and long long
is 128 bits, but it seems very common for sizeof (long)
to be 4.
(Note that long long
is recognized in C from C99 onwards, but was normally implemented as an extension in C++ prior to C++11.)
You can easily catch integer(0) with function identical(x,y)
x = integer(0)
identical(x, integer(0))
[1] TRUE
foo = function(x){identical(x, integer(0))}
foo(x)
[1] TRUE
foo(0)
[1] FALSE
int convert (int n)
{
long val = 0;
if(n==0)
return 0;
for(int i = 1; n > exponent(10, (i-1)); i++)
{
int mod = n%( (exponent(10, i))) ;
int index = mod / (exponent(10, i-1));
val *= 10;
val += index;
}
if (val < Integer.MIN_VALUE || val > Integer.MAX_VALUE)
{
throw new IllegalArgumentException
(val + " cannot be cast to int without changing its value.");
}
return (int) val;
}
static int exponent(int m, int n)
{
if(n < 0)
return 0;
if(0 == n)
return 1;
return (m * exponent(m, n-1));
}
It's simple. On the sender side, use Intent.putExtra
:
Intent myIntent = new Intent(A.this, B.class);
myIntent.putExtra("intVariableName", intValue);
startActivity(myIntent);
On the receiver side, use Intent.getIntExtra
:
Intent mIntent = getIntent();
int intValue = mIntent.getIntExtra("intVariableName", 0);
it should work
example_string = '0, 0, 0, 11, 0, 0, 0, 0, 0, 19, 0, 9, 0, 0, 0, 0, 0, 0, 11'
example_list = [int(k) for k in example_string.split(',')]
Another way,
for i, v in enumerate(numbers): numbers[i] = int(v)
Unless you're talking about base 16 numbers (for which there's a method to parse as Hex), you need to explicitly separate out the part that you are interested in, and then convert it. After all, what would be the semantics of something like 23e44e11d in base 10?
Regular expressions could do the trick if you know for sure that you only have one number. Java has a built in regular expression parser.
If, on the other hands, your goal is to concatenate all the digits and dump the alphas, then that is fairly straightforward to do by iterating character by character to build a string with StringBuilder, and then parsing that one.
Without conversion to string
import math
digits = int(math.log10(n))+1
To also handle zero and negative numbers
import math
if n > 0:
digits = int(math.log10(n))+1
elif n == 0:
digits = 1
else:
digits = int(math.log10(-n))+2 # +1 if you don't count the '-'
You'd probably want to put that in a function :)
Here are some benchmarks. The len(str())
is already behind for even quite small numbers
timeit math.log10(2**8)
1000000 loops, best of 3: 746 ns per loop
timeit len(str(2**8))
1000000 loops, best of 3: 1.1 µs per loop
timeit math.log10(2**100)
1000000 loops, best of 3: 775 ns per loop
timeit len(str(2**100))
100000 loops, best of 3: 3.2 µs per loop
timeit math.log10(2**10000)
1000000 loops, best of 3: 844 ns per loop
timeit len(str(2**10000))
100 loops, best of 3: 10.3 ms per loop
Java 9 introduced a new Stream.iterate
method which can be used to generate a stream and stop at a certain condition. This can be used to get all the digits in the number, using the modulo approach.
int[] a = IntStream.iterate(123400, i -> i > 0, i -> i / 10).map(i -> i % 10).toArray();
Note that this will get the digits in reverse order, but that can be solved either by looping through the array backwards (sadly reversing an array is not that simple), or by creating another stream:
int[] b = IntStream.iterate(a.length - 1, i -> i >= 0, i -> i - 1).map(i -> a[i]).toArray();
or
int[] b = IntStream.rangeClosed(1, a.length).map(i -> a[a.length - i]).toArray();
As an example, this code:
int[] a = IntStream.iterate(123400, i -> i > 0, i -> i / 10).map(i -> i % 10).toArray();
int[] b = IntStream.iterate(a.length - 1, i -> i >= 0, i -> i - 1).map(i -> a[i]).toArray();
System.out.println(Arrays.toString(a));
System.out.println(Arrays.toString(b));
Will print:
[0, 0, 4, 3, 2, 1]
[1, 2, 3, 4, 0, 0]
For Java 8 and higher:
String[] test = {"1", "2", "3", "4", "5"};
int[] ints = Arrays.stream(test).mapToInt(Integer::parseInt).toArray();
sys.maxsize
is not the actually the maximum integer value which is supported. You can double maxsize and multiply it by itself and it stays a valid and correct value.
However, if you try sys.maxsize ** sys.maxsize
, it will hang your machine for a significant amount of time. As many have pointed out, the byte and bit size does not seem to be relevant because it practically doesn't exist. I guess python just happily expands it's integers when it needs more memory space. So in general there is no limit.
Now, if you're talking about packing or storing integers in a safe way where they can later be retrieved with integrity then of course that is relevant. I'm really not sure about packing but I know python's pickle
module handles those things well. String representations obviously have no practical limit.
So really, the bottom line is: what is your applications limit? What does it require for numeric data? Use that limit instead of python's fairly nonexistent integer limit.
the easiest technique is to just assign float to int, for example:
int i;
float f;
f = 34.0098;
i = f;
this will truncate everything behind floating point or you can round your float number before.
Use hex(id)[2:]
and int(urlpart, 16)
. There are other options. base32 encoding your id could work as well, but I don't know that there's any library that does base32 encoding built into Python.
Apparently a base32 encoder was introduced in Python 2.4 with the base64 module. You might try using b32encode
and b32decode
. You should give True
for both the casefold
and map01
options to b32decode
in case people write down your shortened URLs.
Actually, I take that back. I still think base32 encoding is a good idea, but that module is not useful for the case of URL shortening. You could look at the implementation in the module and make your own for this specific case. :-)
For a shorten version. If all the indices are smaller than 10, then use the following:
do i=0,9
fid=100+i
fname='OUTPUT'//NCHAR(i+48) //'.txt'
open(fid, file=fname)
!....
end do
For a general version:
character(len=5) :: charI
do i = 0,100
fid = 100 + i
write(charI,"(A)"), i
fname ='OUTPUT' // trim(charI) // '.txt'
open(fid, file=fname)
end do
That's all.
int random = minimum + Double.valueOf(Math.random()*(maximum-minimum )).intValue();
Or take a look to RandomUtils from Apache Commons.
In answering this question I define 'value' as the value of the enum item, and index as is positional location in the Enum definition (which is sorted by value). The OP's question asks for 'index' and various answer have interpreted this as either 'index' or 'value' (by my definitions). Sometimes the index is equal to numerical value.
No answer has specifically addressed the case of finding the index (not value) where the Enum is an Enum flag.
Enum Flag
{
none = 0 // not a flag, thus index =-1
A = 1 << 0, // index should be 0
B = 1 << 1, // index should be 1
C = 1 << 2, // index should be 2
D = 1 << 3, // index should be 3,
AandB = A | B // index is composite, thus index = -1 indicating undefined
All = -1 //index is composite, thus index = -1 indicating undefined
}
In the case of Flag Enums, the index is simply given by
var index = (int)(Math.Log2((int)flag)); //Shows the maths, but is inefficient
However, the above solution is (a) Inefficient as pointed out by @phuclv (Math.Log2() is floating point and costly) and (b) Does not address the Flag.none case, nor any composite flags - flags that are composed of other flags (eg the 'AandB' flag as in my example).
DotNetCore If using dot net core we can address both a) and b) above as follows:
int setbits = BitOperations.PopCount((uint)flag); //get number of set bits
if (setbits != 1) //Finds ECalFlags.none, and all composite flags
return -1; //undefined index
int index = BitOperations.TrailingZeroCount((uint)flag); //Efficient bit operation
Not DotNetCore The BitOperations only work in dot net core. See @phuclv answer here for some efficient suggestions https://stackoverflow.com/a/63582586/6630192
You can put them into a list and then sort them using their natural ordering, like so:
final List<Integer> list = Arrays.asList(11367, 11358, 11421, 11530, 11491, 11218, 11789);
Collections.sort( list );
// Use the sorted list
If the numbers are stored in the same variable, then you'll have to somehow put them into a List
and then call sort
, like so:
final List<Integer> list = new ArrayList<Integer>();
list.add( myVariable );
// Change myVariable to another number...
list.add( myVariable );
// etc...
Collections.sort( list );
// Use the sorted list
What sort of rounding behavior do you want? Do you 2.67 to turn into 3, or 2. If you want to use rounding, try this:
s = '234.67'
i = int(round(float(s)))
Otherwise, just do:
s = '234.67'
i = int(float(s))
An int64_t should be 64 bits wide on any platform (hence the name), whereas a long can have different lengths on different platforms. In particular, sizeof(long) is often 4, ie. 32 bits.
you need to convert to char first because converting to int adds those days to 1900-01-01
select CONVERT (datetime,convert(char(8),rnwl_efctv_dt ))
here are some examples
select CONVERT (datetime,5)
1900-01-06 00:00:00.000
select CONVERT (datetime,20100101)
blows up, because you can't add 20100101 days to 1900-01-01..you go above the limit
convert to char first
declare @i int
select @i = 20100101
select CONVERT (datetime,convert(char(8),@i))
By looping it can be done the following way :)
num1= int(input('Enter the number'))
sum1 = num1 #making a alt int to store the value of the orginal so it wont be affected
y = [] #making a list
while True:
if(sum1==0):#checking if the number is not zero so it can break if it is
break
d = sum1%10 #last number of your integer is saved in d
sum1 = int(sum1/10) #integer is now with out the last number ie.4320/10 become 432
y.append(d) # appending the last number in the first place
y.reverse()#as last is in first , reversing the number to orginal form
print(y)
Answer becomes
Enter the number2342
[2, 3, 4, 2]
I can not add comments to the decision of Vladimir, but you can immediately make an array deployed in the right direction. Here is my solution:
public static int[] splitAnIntegerIntoAnArrayOfNumbers (int a) {
int temp = a;
ArrayList<Integer> array = new ArrayList<Integer>();
do{
array.add(temp % 10);
temp /= 10;
} while (temp > 0);
int[] arrayOfNumbers = new int[array.size()];
for(int i = 0, j = array.size()-1; i < array.size(); i++,j--)
arrayOfNumbers [j] = array.get(i);
return arrayOfNumbers;
}
Important: This solution will not work for negative integers.
You can combine the two functions; coerce to characters thence to numerics:
> fac <- factor(c("1","2","1","2"))
> as.numeric(as.character(fac))
[1] 1 2 1 2
def closest(list, Number):
aux = []
for valor in list:
aux.append(abs(Number-valor))
return aux.index(min(aux))
This code will give you the index of the closest number of Number in the list.
The solution given by KennyTM is the best overall, but in the cases you cannot use it (like brython), this function will do the work
Like mentioned earlier, I'd recommend boost lexical_cast. Not only does it have a fairly nice syntax:
#include <boost/lexical_cast.hpp>
std::string s = boost::lexical_cast<std::string>(i);
it also provides some safety:
try{
std::string s = boost::lexical_cast<std::string>(i);
}catch(boost::bad_lexical_cast &){
...
}
The JVM is caching Integer values. Hence the comparison with ==
only works for numbers between -128 and 127.
The inconvenience of typing 10 < x && x < 20
is minimal compared to the increase in language complexity if one would allow 10 < x < 20
, so the designers of the Java language decided against supporting it.
Apart from all the other answers, what you can do is :
long l = Long.parseLong("600851475143");
for example :
obj.function(Long.parseLong("600851475143"));
How do you express binary literals in Python?
They're not "binary" literals, but rather, "integer literals". You can express integer literals with a binary format with a 0
followed by a B
or b
followed by a series of zeros and ones, for example:
>>> 0b0010101010
170
>>> 0B010101
21
From the Python 3 docs, these are the ways of providing integer literals in Python:
Integer literals are described by the following lexical definitions:
integer ::= decinteger | bininteger | octinteger | hexinteger decinteger ::= nonzerodigit (["_"] digit)* | "0"+ (["_"] "0")* bininteger ::= "0" ("b" | "B") (["_"] bindigit)+ octinteger ::= "0" ("o" | "O") (["_"] octdigit)+ hexinteger ::= "0" ("x" | "X") (["_"] hexdigit)+ nonzerodigit ::= "1"..."9" digit ::= "0"..."9" bindigit ::= "0" | "1" octdigit ::= "0"..."7" hexdigit ::= digit | "a"..."f" | "A"..."F"
There is no limit for the length of integer literals apart from what can be stored in available memory.
Note that leading zeros in a non-zero decimal number are not allowed. This is for disambiguation with C-style octal literals, which Python used before version 3.0.
Some examples of integer literals:
7 2147483647 0o177 0b100110111 3 79228162514264337593543950336 0o377 0xdeadbeef 100_000_000_000 0b_1110_0101
Changed in version 3.6: Underscores are now allowed for grouping purposes in literals.
You can have the zeros and ones in a string object which can be manipulated (although you should probably just do bitwise operations on the integer in most cases) - just pass int the string of zeros and ones and the base you are converting from (2):
>>> int('010101', 2)
21
You can optionally have the 0b
or 0B
prefix:
>>> int('0b0010101010', 2)
170
If you pass it 0
as the base, it will assume base 10 if the string doesn't specify with a prefix:
>>> int('10101', 0)
10101
>>> int('0b10101', 0)
21
You can pass an integer to bin to see the string representation of a binary literal:
>>> bin(21)
'0b10101'
And you can combine bin
and int
to go back and forth:
>>> bin(int('010101', 2))
'0b10101'
You can use a format specification as well, if you want to have minimum width with preceding zeros:
>>> format(int('010101', 2), '{fill}{width}b'.format(width=10, fill=0))
'0000010101'
>>> format(int('010101', 2), '010b')
'0000010101'
It subjects to architecture of the server on which PHP runs. For 64-bit,
print PHP_INT_MIN . ", ” . PHP_INT_MAX;
yields -9223372036854775808, 9223372036854775807
Aircoded (but tested on this fiddle)
(function($) {
function startTrigger(e) {
var $elem = $(this);
$elem.data('mouseheld_timeout', setTimeout(function() {
$elem.trigger('mouseheld');
}, e.data));
}
function stopTrigger() {
var $elem = $(this);
clearTimeout($elem.data('mouseheld_timeout'));
}
var mouseheld = $.event.special.mouseheld = {
setup: function(data) {
// the first binding of a mouseheld event on an element will trigger this
// lets bind our event handlers
var $this = $(this);
$this.bind('mousedown', +data || mouseheld.time, startTrigger);
$this.bind('mouseleave mouseup', stopTrigger);
},
teardown: function() {
var $this = $(this);
$this.unbind('mousedown', startTrigger);
$this.unbind('mouseleave mouseup', stopTrigger);
},
time: 750 // default to 750ms
};
})(jQuery);
// usage
$("div").bind('mouseheld', function(e) {
console.log('Held', e);
})
These all helped me get to this. I am still on 2012 but now have something quick that will allow me to split a string, even if string has varying numbers of delimiters, and grab the nth substring from that string. It's quick too. I know this post is old, but it took me forever to find something so hopefully this will help someone else.
CREATE FUNCTION [dbo].[SplitsByIndex]
(@separator VARCHAR(20) = ' ',
@string VARCHAR(MAX),
@position INT
)
RETURNS VARCHAR(MAX)
AS
BEGIN
DECLARE @results TABLE
(id INT IDENTITY(1, 1),
chrs VARCHAR(8000)
);
DECLARE @outResult VARCHAR(8000);
WITH X(N)
AS (SELECT 'Table1'
FROM(VALUES(0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0), (0)) T(C)),
Y(N)
AS (SELECT 'Table2'
FROM X A1,
X A2,
X A3,
X A4,
X A5,
X A6,
X A7,
X A8), -- Up to 16^8 = 4 billion
T(N)
AS (SELECT TOP (ISNULL(LEN(@string), 0)) ROW_NUMBER() OVER(
ORDER BY
(
SELECT NULL
)) - 1 N
FROM Y),
Delim(Pos)
AS (SELECT t.N
FROM T
WHERE(SUBSTRING(@string, t.N, LEN(@separator + 'x') - 1) LIKE @separator
OR t.N = 0)),
Separated(value)
AS (SELECT SUBSTRING(@string, d.Pos + LEN(@separator + 'x') - 1, LEAD(d.Pos, 1, 2147483647) OVER(
ORDER BY
(
SELECT NULL
))-d.Pos - LEN(@separator))
FROM Delim d
WHERE @string IS NOT NULL)
INSERT INTO @results(chrs)
SELECT s.value
FROM Separated s
WHERE s.value <> @separator;
SELECT @outResult =
(
SELECT chrs
FROM @results
WHERE id = @position
);
RETURN @outResult;
END;
This can be used like this:
SELECT [dbo].[SplitsByIndex](' ',fieldname,2)
from tablename
In a normal array you have to shuffle down all the array entries above 2 and then resize it using the Resize method. You might be better off using an ArrayList.
When a promise is resolved/rejected, it will call its success/error handler:
var promiseB = promiseA.then(function(result) {
// do something with result
});
The then
method also returns a promise: promiseB, which will be resolved/rejected depending on the return value from the success/error handler from promiseA.
There are three possible values that promiseA's success/error handlers can return that will affect promiseB's outcome:
1. Return nothing --> PromiseB is resolved immediately,
and undefined is passed to the success handler of promiseB
2. Return a value --> PromiseB is resolved immediately,
and the value is passed to the success handler of promiseB
3. Return a promise --> When resolved, promiseB will be resolved.
When rejected, promiseB will be rejected. The value passed to
the promiseB's then handler will be the result of the promise
Armed with this understanding, you can make sense of the following:
promiseB = promiseA.then(function(result) {
return result + 1;
});
The then call returns promiseB immediately. When promiseA is resolved, it will pass the result to promiseA's success handler. Since the return value is promiseA's result + 1, the success handler is returning a value (option 2 above), so promiseB will resolve immediately, and promiseB's success handler will be passed promiseA's result + 1.
I'm using this to redirect with React Router v4:
this.props.history.push('/foo');
Hope it work for you ;)
Don't forget to bind to the IPv6 address as well! I was trying to add a site on 127.0.0.1 using localhost and got the bad request/invalid hostname error. When I pinged localhost it resolved to ::1 since IPv6 was enabled so I just had to add the additional binding to fix the issue.
Another issue here is that you likely need to turn off "connect as media device" to be able to connect with adb.
I don't think there is way out of the box. There is no such command in DOS and batch files are far to limited to simulate it (without major pain).
Something likes this
public void testPrintOut() {
int val1 = 8;
String val2 = "$951.23";
String val3 = "$215.92";
String val4 = "$198,301.22";
System.out.println(String.format("%03d %7s %7s %11s", val1, val2, val3, val4));
val1 = 9;
val2 = "$950.19";
val3 = "$216.95";
val4 = "$198,084.26";
System.out.println(String.format("%03d %7s %7s %11s", val1, val2, val3, val4));
}
Is this the kind of output you're looking for?
for(var b in window) {
if(window.hasOwnProperty(b)) console.log(b);
}
This will list everything available on the window
object (all the functions and variables, e.g., $
and jQuery
on this page, etc.). Though, this is quite a list; not sure how helpful it is...
Otherwise just do window
and start going down its tree:
window
This will give you DOMWindow
, an expandable/explorable object.
Still looking for a solution? I got mine from this link .
All I had to do was add this two lines of code at the top of "public static void Main" method in the "program class".
var logRepo = LogManager.GetRepository(Assembly.GetEntryAssembly());
XmlConfigurator.Configure(logRepo, new FileInfo("log4net.config"));
Yes, you have to add:
You can also configure your asp.net core application in such a way that everything that is logged in the output console will be logged in the appender of your choice. You can also download this example code from github and see how i configured it.
You have to set LANG as well, look for files named 'sp1*.msb', and set for instance export LANG=us if you find a file name sp1us.msb. The error message could sure be better :)
Will be slightly neater using a CSS class instead of repeating inline styles.
CSS
input[type=submit] {
position: absolute;
left: -9999px;
}
HTML
<form ng-submit="myFunc()">
<input type="text" ng-model="name" />
<br />
<input type="text" ng-model="email" />
<input type="submit" />
</form>
An unusual but pretty way of doing it
Without index:
each _ in Array(5)
= 'a'
Will print: aaaaa
With index:
each _, i in Array(5)
= i
Will print: 01234
Notes: In the examples above, I have assigned the val
parameter of jade's each
iteration syntax to _
because it is required, but will always return undefined
.
It is a good idea to check the cassandra log if even the server is running. I was getting exactly the same message and unable to do anything with that and then I found out that there are errors in the log and the system is actually not working.
Silly, I know, but could happen...
OK, I have found the problem.
I use some reporting plugins. In the documentation of the failsafe-maven-plugin
I found, that the <encoding>
configuration - of course - uses ${project.reporting.outputEncoding}
by default.
So I added the property as a child element of the project
element and everything is fine now:
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
See also http://maven.apache.org/general.html#encoding-warning
Another method:
SELECT *
FROM (
SELECT * FROM table_name
ORDER BY date ASC, time ASC
) AS sub
GROUP BY name
GROUP BY groups on the first matching result it hits. If that first matching hit happens to be the one you want then everything should work as expected.
I prefer this method as the subquery makes logical sense rather than peppering it with other conditions.
To be precise,
Thread.isAlive()
returns true if the thread has been started (may not yet be running) but has not yet completed its run method.
Thread.getState()
returns the exact state of the thread.
for mac : check the compatible version of mysql server in workbench>preference>MySql
if it's the same version with your mysql server in: cd /usr/local/
A bit late but this worked for me
$data_id = $this->input->get('name_of_field');
There is a way to achieve this without creating a function or using an external tool. By using Postgres' query_to_xml()
function that can dynamically run a query inside another query, it's possible to search a text across many tables. This is based on my answer to retrieve the rowcount for all tables:
To search for the string foo
across all tables in a schema, the following can be used:
with found_rows as (
select format('%I.%I', table_schema, table_name) as table_name,
query_to_xml(format('select to_jsonb(t) as table_row
from %I.%I as t
where t::text like ''%%foo%%'' ', table_schema, table_name),
true, false, '') as table_rows
from information_schema.tables
where table_schema = 'public'
)
select table_name, x.table_row
from found_rows f
left join xmltable('//table/row'
passing table_rows
columns
table_row text path 'table_row') as x on true
Note that the use of xmltable
requires Postgres 10 or newer. For older Postgres version, this can be also done using xpath().
with found_rows as (
select format('%I.%I', table_schema, table_name) as table_name,
query_to_xml(format('select to_jsonb(t) as table_row
from %I.%I as t
where t::text like ''%%foo%%'' ', table_schema, table_name),
true, false, '') as table_rows
from information_schema.tables
where table_schema = 'public'
)
select table_name, x.table_row
from found_rows f
cross join unnest(xpath('/table/row/table_row/text()', table_rows)) as r(data)
The common table expression (WITH ...
) is only used for convenience. It loops through all tables in the public
schema. For each table the following query is run through the query_to_xml()
function:
select to_jsonb(t)
from some_table t
where t::text like '%foo%';
The where clause is used to make sure the expensive generation of XML content is only done for rows that contain the search string. This might return something like this:
<table xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<row>
<table_row>{"id": 42, "some_column": "foobar"}</table_row>
</row>
</table>
The conversion of the complete row to jsonb
is done, so that in the result one could see which value belongs to which column.
The above might return something like this:
table_name | table_row
-------------+----------------------------------------
public.foo | {"id": 1, "some_column": "foobar"}
public.bar | {"id": 42, "another_column": "barfoo"}
I had the same issue and I fixed it this way:
mywork
.myWork
. Let us call the class HelloWorld
.Note: First, make sure that Java is running properly using the CMD command in that way you will understand the problem is on eclipse and not on JDK.
WAMP [ Windows, Apache, Mysql, Php]
XAMPP [X-os, Apache, Mysql, Php , Perl ] (x-os : it can be used on any OS )
Both can be used to easily run and test websites and web applications locally. WAMP cannot be run parallel with XAMPP because with default installation XAMPP gets priority and it takes up ports.
WAMP easy to setup configuration in. WAMPServer has a graphical user interface to switch on or off individual component softwares while it is running. WAMPServer provide an option to switch among many versions of Apache, many versions of PHP and many versions of MySQL all installed which provide more flexibility towards developing while XAMPPServer doesn't have such an option. If you want to use Perl with WAMP you can configure Perl with WAMPServer http://phpflow.com/perl/how-to-configure-perl-on-wamp/ but it is better to go with XAMPP.
XAMPP is easy to use than WAMP. XAMPP is more powerful. XAMPP has a control panel from that you can start and stop individual components (such as MySQL,Apache etc.). XAMPP is more resource consuming than WAMP because of heavy amount of internal component softwares like Tomcat , FileZilla FTP server, Webalizer, Mercury Mail etc.So if you donot need high features better to go with WAMP. XAMPP also has SSL feature which WAMP doesn't.(Secure Sockets Layer (SSL) is a networking protocol that manages server authentication, client authentication and encrypted communication between servers and clients. )
IIS acronym for Internet Information Server also an extensible web server initiated as a research project for for Microsoft NT.IIS can be used for making Web applications, search engines, and Web-based applications that access databases such as SQL Server within Microsoft OSs. . IIS supports HTTP, HTTPS, FTP, FTPS, SMTP and NNTP.
You can change the innerHTML
or outerHTML
of an element on the page instead.
If the style was declared inline or with JavaScript, you can just get at the style
object:
return element.style.display === 'block';
Otherwise, you'll have to get the computed style, and there are browser inconsistencies. IE uses a simple currentStyle
object, but everyone else uses a method:
return element.currentStyle ? element.currentStyle.display :
getComputedStyle(element, null).display;
The null
was required in Firefox version 3 and below.
In .NET 4 you can now write:
flags.HasFlag(FlagsEnum.Bit4)
If you want to pass two values, you can use this approach
<asp:LinkButton ID="RemoveFroRole" Text="Remove From Role" runat="server"
CommandName='<%# Eval("UserName") %>' CommandArgument='<%# Eval("RoleName") %>'
OnClick="RemoveFromRole_Click" />
Basically I am treating {CommmandName,CommandArgument} as key value. Set both from database field. You will have to use OnClick event and use OnCommand
event in this case, which I think is more clean code.
First you should understand how localStorage works. you are doing wrong way to set/get values in local storage. Please read this for more information : How to Use Local Storage with JavaScript
On my 10.6 system:
vhosts folder:
owner:root
group:wheel
permissions:755
vhost.conf files:
owner:root
group:wheel
permissions:644
I was trying to map an IEnumerable to an object. This is way I got this error. Maybe it helps.
There are a lot of good answers to this question already but another way to take a look at it is the cloud (ala Amazon's AWS) is good for interactive use cases and the grid (ala High Performance Computing) is good for batch use cases.
Cloud is interactive in that you can get resources on demand via self service. The code you run on VMs in the cloud, such as the Apache web server, can server clients interactively.
Grid is batch in that you submit jobs to a job queue after obtaining the credentials from some HPC authority to do so. The code you run on the grid waits in that queue until there are sufficient resources to execute it.
There are good use cases for both styles of computing.
I have no idea why Enums are not support natively by Python. The best way I've found to emulate them is by overridding _ str _ and _ eq _ so you can compare them and when you use print() you get the string instead of the numerical value.
class enumSeason():
Spring = 0
Summer = 1
Fall = 2
Winter = 3
def __init__(self, Type):
self.value = Type
def __str__(self):
if self.value == enumSeason.Spring:
return 'Spring'
if self.value == enumSeason.Summer:
return 'Summer'
if self.value == enumSeason.Fall:
return 'Fall'
if self.value == enumSeason.Winter:
return 'Winter'
def __eq__(self,y):
return self.value==y.value
Usage:
>>> s = enumSeason(enumSeason.Spring)
>>> print(s)
Spring
var number = 123456.789;
console.log(new Intl.NumberFormat('en-IN', { maximumFractionDigits: 2 }).format(number));
https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/NumberFormat
Object properties can be checked for existence by property_exists
Example from a unit test:
function testPropertiesExist()
{
$sl =& $this->system_log;
$props = array('log_id',
'type',
'message',
'username',
'ip_address',
'date_added');
foreach($props as $prop) {
$this->assertTrue(property_exists($sl, $prop),
"Property <{$prop}> exists");
}
}
If you are worrying about Case sensitive change the case and compare the string.
if (stringvalue.toLocaleLowerCase().indexOf("mytexttocompare")!=-1)
{
alert("found");
}
Here’s how this works all:
You need the ability to access the HTML on the particular webpage you are sharing. It'll probably work site wide too if you use a common header file. I have not tried this, but it should work. You'll just get the same image for all pages if you do this though.
You need to add these HTML meta tags into page in the . It will not work if you put it in the . Make sure to customize per your a) image, b) description, c) URL, and d) title.
A Real Example.
<meta property="og:image" content="http://www.coachesneedsocial.com/wp-content/uploads/2014/12/BannerWCircleImages-1.jpg" />
<meta property="og:description" content="Coaches share their secrets to success so you can rock 2015." />
<meta property="og:url"content="http://www.coachesneedsocial.com/coacheswisdomtelesummit/" />
<meta property="og:title" content="Coaches Wisdom Telesummit" />
https://developers.facebook.com/tools/debug/og/object/
Big Tip.. make sure the “quote marks” are the same in your HTML (they should look like 2 straight marks and no curves… sometimes programs change these to different fonts and it goofs up the code.
You answered this in the way you wrote the question - use 'define'. but once set, you can't change a define.
Alternatively, there are tricks with a constant in a class, such as class::constant that you can use. You can also make them variable by declaring static properties to the class, with functions to set the static property if you want to change it.
Others have provided answers for how to change the title size, but as for the axes tick label size, you can also use the set_tick_params method.
E.g., to make the x-axis tick label size small:
ax.xaxis.set_tick_params(labelsize='small')
or, to make the y-axis tick label large:
ax.yaxis.set_tick_params(labelsize='large')
You can also enter the labelsize
as a float, or any of the following string options: 'xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', or 'xx-large'.
try this:
final String currentTime = String.valueOf(System.currentTimeMillis());
This is how you do CURL with sessions
//initial request with login data
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/login.php');
curl_setopt($ch, CURLOPT_USERAGENT,'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/32.0.1700.107 Chrome/32.0.1700.107 Safari/537.36');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "username=XXXXX&password=XXXXX");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_COOKIESESSION, true);
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookie-name'); //could be empty, but cause problems on some hosts
curl_setopt($ch, CURLOPT_COOKIEFILE, '/var/www/ip4.x/file/tmp'); //could be empty, but cause problems on some hosts
$answer = curl_exec($ch);
if (curl_error($ch)) {
echo curl_error($ch);
}
//another request preserving the session
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/profile');
curl_setopt($ch, CURLOPT_POST, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, "");
$answer = curl_exec($ch);
if (curl_error($ch)) {
echo curl_error($ch);
}
I've seen this on ImpressPages
PATH mode is used in generating XML from a SELECT query
1. SELECT
ID,
Name
FROM temp1
FOR XML PATH;
Ouput:
<row>
<ID>1</ID>
<Name>aaa</Name>
</row>
<row>
<ID>1</ID>
<Name>bbb</Name>
</row>
<row>
<ID>1</ID>
<Name>ccc</Name>
</row>
<row>
<ID>1</ID>
<Name>ddd</Name>
</row>
<row>
<ID>1</ID>
<Name>eee</Name>
</row>
The Output is element-centric XML where each column value in the resulting rowset is wrapped in an row element. Because the SELECT clause does not specify any aliases for the column names, the child element names generated are the same as the corresponding column names in the SELECT clause.
For each row in the rowset a tag is added.
2.
SELECT
ID,
Name
FROM temp1
FOR XML PATH('');
Ouput:
<ID>1</ID>
<Name>aaa</Name>
<ID>1</ID>
<Name>bbb</Name>
<ID>1</ID>
<Name>ccc</Name>
<ID>1</ID>
<Name>ddd</Name>
<ID>1</ID>
<Name>eee</Name>
For Step 2: If you specify a zero-length string, the wrapping element is not produced.
3.
SELECT
Name
FROM temp1
FOR XML PATH('');
Ouput:
<Name>aaa</Name>
<Name>bbb</Name>
<Name>ccc</Name>
<Name>ddd</Name>
<Name>eee</Name>
4. SELECT
',' +Name
FROM temp1
FOR XML PATH('')
Ouput:
,aaa,bbb,ccc,ddd,eee
In Step 4 we are concatenating the values.
5. SELECT ID,
abc = (SELECT
',' +Name
FROM temp1
FOR XML PATH('') )
FROM temp1
Ouput:
1 ,aaa,bbb,ccc,ddd,eee
1 ,aaa,bbb,ccc,ddd,eee
1 ,aaa,bbb,ccc,ddd,eee
1 ,aaa,bbb,ccc,ddd,eee
1 ,aaa,bbb,ccc,ddd,eee
6. SELECT ID,
abc = (SELECT
',' +Name
FROM temp1
FOR XML PATH('') )
FROM temp1 GROUP by iD
Ouput:
ID abc
1 ,aaa,bbb,ccc,ddd,eee
In Step 6 we are grouping the date by ID.
STUFF( source_string, start, length, add_string ) Parameters or Arguments source_string The source string to modify. start The position in the source_string to delete length characters and then insert add_string. length The number of characters to delete from source_string. add_string The sequence of characters to insert into the source_string at the start position.
SELECT ID,
abc =
STUFF (
(SELECT
',' +Name
FROM temp1
FOR XML PATH('')), 1, 1, ''
)
FROM temp1 GROUP by iD
Output:
-----------------------------------
| Id | Name |
|---------------------------------|
| 1 | aaa,bbb,ccc,ddd,eee |
-----------------------------------
Several people pointed out the specific answers for heap size with the jvm options of -Xms
and -Xms
. I want to point out that this is not the only type of memory options for the jvm. Specifically if you are get stack over flows, then you'll want to increase the size of the stack by adding an additional option like -Xss8m
.
For this problem, the jvm options of something like -Xms2g -Xmx6g -Xss8m
would be a solution.
I'm sharing this information as my google searches on how to increase jvm memory took me to this solution, and the solutions didn't work with high amounts of memory allocation. Once I figured out what the specific settings were for, I was able to google how to increase the stack size and found the missing param. :) Hope this saves others time, as it would of saved me a ton of time. :)
You don't even need to do the check manually, File.Open does it for you. Try:
using (StreamWriter sw = new StreamWriter(File.Open(path, System.IO.FileMode.Append)))
{
Ref: http://msdn.microsoft.com/en-us/library/system.io.filemode.aspx
Try this for value...
$("select#id_of_select_element option").filter(":selected").val();
or this for text...
$("select#id_of_select_element option").filter(":selected").text();
Most of the answers here have dealt with how to mange EOFError exceptions, which is really handy if you're unsure about whether the pickled object is empty or not.
However, if you're surprised that the pickle file is empty, it could be because you opened the filename through 'wb' or some other mode that could have over-written the file.
for example:
filename = 'cd.pkl'
with open(filename, 'wb') as f:
classification_dict = pickle.load(f)
This will over-write the pickled file. You might have done this by mistake before using:
...
open(filename, 'rb') as f:
And then got the EOFError because the previous block of code over-wrote the cd.pkl file.
When working in Jupyter, or in the console (Spyder) I usually write a wrapper over the reading/writing code, and call the wrapper subsequently. This avoids common read-write mistakes, and saves a bit of time if you're going to be reading the same file multiple times through your travails
In Apache Drill, use backquotes:
select `from` from table;
We can define the so-called foreign key
in MongoDB. However, we need to maintain the data integrity BY OURSELVES. For example,
student
{
_id: ObjectId(...),
name: 'Jane',
courses: ['bio101', 'bio102'] // <= ids of the courses
}
course
{
_id: 'bio101',
name: 'Biology 101',
description: 'Introduction to biology'
}
The courses
field contains _id
s of courses. It is easy to define a one-to-many relationship. However, if we want to retrieve the course names of student Jane
, we need to perform another operation to retrieve the course
document via _id
.
If the course bio101
is removed, we need to perform another operation to update the courses
field in the student
document.
The document-typed nature of MongoDB supports flexible ways to define relationships. To define a one-to-many relationship:
Example:
student
{
name: 'Kate Monster',
addresses : [
{ street: '123 Sesame St', city: 'Anytown', cc: 'USA' },
{ street: '123 Avenue Q', city: 'New York', cc: 'USA' }
]
}
Like the student
/course
example above.
Suitable for one-to-squillions, such as log messages.
host
{
_id : ObjectID('AAAB'),
name : 'goofy.example.com',
ipaddr : '127.66.66.66'
}
logmsg
{
time : ISODate("2014-03-28T09:42:41.382Z"),
message : 'cpu is on fire!',
host: ObjectID('AAAB') // Reference to the Host document
}
Virtually, a host
is the parent of a logmsg
. Referencing to the host
id saves much space given that the log messages are squillions.
References:
A simple solution with minimal javascript is to use the html attribute pattern (supported by most modern browsers). This works by setting the pattern of the second field to the value of the first field.
Unfortunately, you also need to escape the regex, for which no standard function exists.
<form>
<input type="text" oninput="form.confirm.pattern = escapeRegExp(this.value)">
<input name="confirm" pattern="" title="Fields must match" required>
</form>
<script>
function escapeRegExp(str) {
return str.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
}
</script>
I'm not entirely sure of the general purpose of the function, but you could always do this:
function getMachine(color, qty) {
var retval;
$("#getMachine li").each(function() {
var thisArray = $(this).text().split("~");
if(thisArray[0] == color&& qty>= parseInt(thisArray[1]) && qty<= parseInt(thisArray[2])) {
retval = thisArray[3];
return false;
}
});
return retval;
}
var retval = getMachine(color, qty);
In my case, I was using Laravel 5 and I had forgotten to change the mail globals in the .env file that is located in your directory root folder (these variables override your mail configuration)
MAIL_DRIVER=smtp
MAIL_HOST=smtp.gmail.com
MAIL_PORT=465
[email protected]
MAIL_PASSWORD=yourpassword
by default, the mailhost is:
MAIL_HOST=mailtraper.io
I was getting the same error but that worked for me.
A slight extension to the answer given, so, hopefully useful to the asker and anyone else looking.
You can also SELECT
the values you want to delete. But watch out for the Error 1093 - You can't specify the target table for update in FROM clause.
DELETE FROM
orders_products_history
WHERE
(branchID, action) IN (
SELECT
branchID,
action
FROM
(
SELECT
branchID,
action
FROM
orders_products_history
GROUP BY
branchID,
action
HAVING
COUNT(*) > 10000
) a
);
I wanted to delete all history records where the number of history records for a single action/branch exceed 10,000. And thanks to this question and chosen answer, I can.
Hope this is of use.
Richard.
It is nice to verify that the code you pushed actually got committed.
You can get a log of changes on a bare repository by explicitly setting the path using the --relative option.
$ cd test_repo
$ git log --relative=/
This will show you the committed changes as if this was a regular git repo.
You can query Active directory via JNDI and run LDAP operations
http://docs.oracle.com/javase/tutorial/jndi/ldap/authentication.html
http://docs.oracle.com/javase/tutorial/jndi/ldap/operations.html
http://mhimu.wordpress.com/2009/03/18/active-directory-authentication-using-javajndi/
You can set the special character, which is looked for upon execution of a script, to another value by means of using the SET DEFINE <1_CHARACTER>
By default, the DEFINE function itself is on, and it is set to &
It can be turned off - as mentioned already - but it can be avoided as well by means of setting it to a different value. Be very aware of what sign you set it to. In the below example, I've chose the # character, but that choice is just an example.
SQL> select '&var_ampersand #var_hash' from dual;
Enter value for var_ampersand: a value
'AVALUE#VAR_HASH'
-----------------
a value #var_hash
SQL> set define #
SQL> r
1* select '&var_ampersand #var_hash' from dual
Enter value for var_hash: another value
'&VAR_AMPERSANDANOTHERVALUE'
----------------------------
&var_ampersand another value
SQL>
You need to put your main code on the OnStart
method.
This other SO answer of mine might help.
You will need to put some code to enable debugging within visual-studio while maintaining your application valid as a windows-service. This other SO thread cover the issue of debugging a windows-service.
EDIT:
Please see also the documentation available here for the OnStart
method at the MSDN where one can read this:
Do not use the constructor to perform processing that should be in OnStart. Use OnStart to handle all initialization of your service. The constructor is called when the application's executable runs, not when the service runs. The executable runs before OnStart. When you continue, for example, the constructor is not called again because the SCM already holds the object in memory. If OnStop releases resources allocated in the constructor rather than in OnStart, the needed resources would not be created again the second time the service is called.
In HTTP the error occurs.
Set permission for localhost in bellow label(Accept requests from these HTTP referrers (web sites)).
It worked for me.
I think my answer can be more understandable:
There are two differences between &
and &&
.
If they use as logical AND
&
and &&
can be logical AND
, when the &
or &&
left and right expression result all is true, the whole operation result can be true.
when &
and &&
as logical AND
, there is a difference:
when use &&
as logical AND
, if the left expression result is false, the right expression will not execute.
Take the example :
String str = null;
if(str!=null && !str.equals("")){ // the right expression will not execute
}
If using &
:
String str = null;
if(str!=null & !str.equals("")){ // the right expression will execute, and throw the NullPointerException
}
An other more example:
int x = 0;
int y = 2;
if(x==0 & ++y>2){
System.out.print(“y=”+y); // print is: y=3
}
int x = 0;
int y = 2;
if(x==0 && ++y>2){
System.out.print(“y=”+y); // print is: y=2
}
& can be used as bit operator
&
can be used as Bitwise AND
operator, &&
can not.
The bitwise AND " &" operator produces 1 if and only if both of the bits in its operands are 1. However, if both of the bits are 0 or both of the bits are different then this operator produces 0. To be more precise bitwise AND " &" operator returns 1 if any of the two bits is 1 and it returns 0 if any of the bits is 0.
From the wiki page:
http://www.roseindia.net/java/master-java/java-bitwise-and.shtml
I see only two options:
This is the fastest version I have found so far, about 6 times faster than readLines. On a 150MB log file this takes 0.35 seconds, versus 2.40 seconds when using readLines(). Just for fun, linux' wc -l command takes 0.15 seconds.
public static int countLinesOld(String filename) throws IOException {
InputStream is = new BufferedInputStream(new FileInputStream(filename));
try {
byte[] c = new byte[1024];
int count = 0;
int readChars = 0;
boolean empty = true;
while ((readChars = is.read(c)) != -1) {
empty = false;
for (int i = 0; i < readChars; ++i) {
if (c[i] == '\n') {
++count;
}
}
}
return (count == 0 && !empty) ? 1 : count;
} finally {
is.close();
}
}
EDIT, 9 1/2 years later: I have practically no java experience, but anyways I have tried to benchmark this code against the LineNumberReader
solution below since it bothered me that nobody did it. It seems that especially for large files my solution is faster. Although it seems to take a few runs until the optimizer does a decent job. I've played a bit with the code, and have produced a new version that is consistently fastest:
public static int countLinesNew(String filename) throws IOException {
InputStream is = new BufferedInputStream(new FileInputStream(filename));
try {
byte[] c = new byte[1024];
int readChars = is.read(c);
if (readChars == -1) {
// bail out if nothing to read
return 0;
}
// make it easy for the optimizer to tune this loop
int count = 0;
while (readChars == 1024) {
for (int i=0; i<1024;) {
if (c[i++] == '\n') {
++count;
}
}
readChars = is.read(c);
}
// count remaining characters
while (readChars != -1) {
System.out.println(readChars);
for (int i=0; i<readChars; ++i) {
if (c[i] == '\n') {
++count;
}
}
readChars = is.read(c);
}
return count == 0 ? 1 : count;
} finally {
is.close();
}
}
Benchmark resuls for a 1.3GB text file, y axis in seconds. I've performed 100 runs with the same file, and measured each run with System.nanoTime()
. You can see that countLinesOld
has a few outliers, and countLinesNew
has none and while it's only a bit faster, the difference is statistically significant. LineNumberReader
is clearly slower.
You can use Messenger
from MVVMLight toolkit. in your ViewModel
send a message like this:
Messenger.Default.Send(new NotificationMessage("Close"));
then in your windows code behind, after InitializeComponent
, register for that message like this:
Messenger.Default.Register<NotificationMessage>(this, m=>{
if(m.Notification == "Close")
{
this.Close();
}
});
you can find more about MVVMLight toolkit here: MVVMLight toolkit on Codeplex
Notice that there is not a "no code-behind at all rule" in MVVM and you can do registering for messages in a view code-behind.
Solution
Use this code
jQuery.nl2br = function(varTest){
return varTest.replace(/(\r\n|\n\r|\r|\n)/g, "<br>");
};
As of Chrome 48+, you can access the print preview via the following steps:
Open dev tools – Ctrl/Cmd + Shift + I or right click on the page and choose 'Inspect'.
Hit Esc to open the additional drawer.
If 'Rendering' isn't already being show, click the 3 dot kebab and choose 'rendering'.
Check the 'Emulate print media' checkbox.
From there Chrome will show you a print version of your page and you can inspect element and troubleshoot like you would the browser version.
It's the line after that match that you're interesting in, right? In sed, that could be accomplished like so:
sed -n '/ABC/{n;p}' infile
Alternatively, grep's A option might be what you're looking for.
-A NUM, Print NUM lines of trailing context after matching lines.
For example, given the following input file:
foo
bar
baz
bash
bongo
You could use the following:
$ grep -A 1 "bar" file
bar
baz
$ sed -n '/bar/{n;p}' file
baz
Hope that helps.
Just for the record in modern times,
1 - Just have updated Xcode on your machine as you normally do
2 - Open terminal and
$ xcode-select --install
it will perform a short install of a minute or two.
3 - Launch Xcode. "New" "Project" ... you have to choose "Command line tool"
Note - confusingly this is under the "macOS" tab.
Select "C" language on the next screen...
4- You'll be asked to save the project somewhere on your desktop. The name you give the project here is just the name of the folder that will hold the project. It does not have any importance in the actual software.
5 - You're golden! You can now enjoy c with Mac and Xcode.
actually it's an ownership problem
try to:
ls -l /var/run/asterisk/asterisk.ctl
you will see that the file has ownership of 'root'
although you have changed the ownership with:
chown -R asterisk /var/run/asterisk
once you restart the asterisk server the ownership gets back to the 'root' again
they should be for 'asterisk:asterisk' user and group
Basem Hegazy
Sorry, you cannot inherit from multiple classes. You may use interfaces or a combination of one class and interface(s), where interface(s) should follow the class name in the signature.
interface A { }
interface B { }
class Base { }
class AnotherClass { }
Possible ways to inherit:
class SomeClass : A, B { } // from multiple Interface(s)
class SomeClass : Base, B { } // from one Class and Interface(s)
This is not legal:
class SomeClass : Base, AnotherClass { }
Firstly, null the data source:
this.dataGridView.DataSource = null;
Then clear the rows:
this.dataGridView.Rows.Clear();
Then set the data source to the new list:
this.dataGridView.DataSource = this.GetNewValues();
For SSIS you could go with:
RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2) + "-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2) + "-" + (DT_STR, 4, 1252) DATEPART("yy" , GETDATE())
Expression builder screen:
In ES6 the right way to do this is:
class MyClass {
constructor() {
if (MyClass._instance) {
throw new Error("Singleton classes can't be instantiated more than once.")
}
MyClass._instance = this;
// ... Your rest of the constructor code goes after this
}
}
var instanceOne = new MyClass() // Executes succesfully
var instanceTwo = new MyClass() // Throws error
_x000D_
Or, if you don't want an error to be thrown on the second instance creation, you can just return the last instance, like so:
class MyClass {
constructor() {
if (MyClass._instance) {
return MyClass._instance
}
MyClass._instance = this;
// ... Your rest of the constructor code goes after this
}
}
var instanceOne = new MyClass()
var instanceTwo = new MyClass()
console.log(instanceOne === instanceTwo) // Logs "true"
_x000D_
With a little research i found that javascript does not know that a Document Object Exist unless the Object has Already loaded before the script code (As javascript reads down a page).
<head>
<script type="text/javascript">
function insert(){
var src = document.getElementById("gamediv");
var img = document.createElement("img");
img.src = "img/eqp/"+this.apparel+"/"+this.facing+"_idle.png";
src.appendChild(img);
}
</script>
</head>
<body>
<div id="gamediv">
<script type="text/javascript">
insert();
</script>
</div>
</body>
assign is what you are looking for.
assign("x", 5)
x
[1] 5
but buyer beware.
See R FAQ 7.21 http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-turn-a-string-into-a-variable_003f
ActiveXObject
is available only on IE browser. So every other useragent will throw an error
On modern browser you could use instead File API or File writer API (currently implemented only on Chrome)
The simplest way is to simply use the following line of jquery
, using this you don't get the /fakepath
nonsense, you straight up get the file that was uploaded:
$('input[type=file]')[0].files[0]; // This gets the file
$('#idOfFileUpload')[0].files[0]; // This gets the file with the specified id
Some other useful commands are:
To get the name of the file:
$('input[type=file]')[0].files[0].name; // This gets the file name
To get the type of the file:
If I were to upload a PNG, it would return image/png
$("#imgUpload")[0].files[0].type
To get the size (in bytes) of the file:
$("#imgUpload")[0].files[0].size
Also you don't have to use these commands on('change'
, you can get the values at any time, for instance you may have a file upload and when the user clicks upload
, you simply use the commands I listed.
In the source header you can declare:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
....
It is described in the PEP 0263:
Then you can use UTF-8 in strings:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
u = 'idzie waz waska drózka'
uu = u.decode('utf8')
s = uu.encode('cp1250')
print(s)
This declaration is not needed in Python 3 as UTF-8 is the default source encoding (see PEP 3120).
In addition, it may be worth verifying that your text editor properly encodes your code in UTF-8. Otherwise, you may have invisible characters that are not interpreted as UTF-8.
If you want to check repetition more than 1 in descending order then implement below query.
SELECT duplicate_data,COUNT(duplicate_data) AS duplicate_data
FROM duplicate_data_table_name
GROUP BY duplicate_data
HAVING COUNT(duplicate_data) > 1
ORDER BY COUNT(duplicate_data) DESC
If want simple count query.
SELECT COUNT(duplicate_data) AS duplicate_data
FROM duplicate_data_table_name
GROUP BY duplicate_data
ORDER BY COUNT(duplicate_data) DESC
To get a count of the number of unique combinations of id
, name
and address
:
SELECT Count(*)
FROM (
SELECT DISTINCT
id
, name
, address
FROM your_table
) As distinctified
It is possible. Have a look at JSch.addIdentity(...)
This allows you to use key either as byte array or to read it from file.
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
public class UserAuthPubKey {
public static void main(String[] arg) {
try {
JSch jsch = new JSch();
String user = "tjill";
String host = "192.18.0.246";
int port = 10022;
String privateKey = ".ssh/id_rsa";
jsch.addIdentity(privateKey);
System.out.println("identity added ");
Session session = jsch.getSession(user, host, port);
System.out.println("session created.");
// disabling StrictHostKeyChecking may help to make connection but makes it insecure
// see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no
//
// java.util.Properties config = new java.util.Properties();
// config.put("StrictHostKeyChecking", "no");
// session.setConfig(config);
session.connect();
System.out.println("session connected.....");
Channel channel = session.openChannel("sftp");
channel.setInputStream(System.in);
channel.setOutputStream(System.out);
channel.connect();
System.out.println("shell channel connected....");
ChannelSftp c = (ChannelSftp) channel;
String fileName = "test.txt";
c.put(fileName, "./in/");
c.exit();
System.out.println("done");
} catch (Exception e) {
System.err.println(e);
}
}
}
Update
And there's your problem - you do have to click event handlers for some a
elements. In this case, the order in which you attach the handlers matters since they'll be fired in that order.
Here's a working fiddle that shows the behaviour you want.
This should be your code:
$(document).ready(function(){
$('#tabs div.tab').hide();
$('#tabs div.tab:first').show();
$('#tabs ul li:first').addClass('active');
$("div.subtab_left li.notebook a").click(function(e) {
e.stopImmediatePropagation();
alert("asdasdad");
return false;
});
$('#tabs ul li a').click(function(){
alert("Handling link click");
$('#tabs ul li').removeClass('active');
$(this).parent().addClass('active');
var currentTab = $(this).attr('href');
$('#tabs div.tab').hide();
$(currentTab).show();
return false;
});
});
Note that the order of attaching the handlers has been exchanged and e.stopImmediatePropagation()
is used to stop the other click handler from firing while return false
is used to stop the default behaviour of following the link (as well as stopping the bubbling of the event. You may find that you need to use only e.stopPropagation
).
Play around with this, if you remove the e.stopImmediatePropagation()
you'll find that the second click handler's alert will fire after the first alert. Removing the return false
will have no effect on this behaviour but will cause links to be followed by the browser.
Note
A better fix might be to ensure that the selectors return completely different sets of elements so there is no overlap but this might not always be possible in which case the solution described above might be one way to consider.
I don't see why your first code snippet would not work. What's the default action that you're seeing that you want to stop?
If you've attached other event handlers to the link, you should look into event.stopPropagation()
and event.stopImmediatePropagation()
instead. Note that return false
is equivalent to calling both event.preventDefault
and event.stopPropagation()
ref
In your second code snippet, e
is not defined. So an error would thrown at e.preventDefault()
and the next lines never execute.
In other words
$("div.subtab_left li.notebook a").click(function() {
e.preventDefault();
alert("asdasdad");
return false;
});
should be
//note the e declared in the function parameters now
$("div.subtab_left li.notebook a").click(function(e) {
e.preventDefault();
alert("asdasdad");
return false;
});
Here's a working example showing that this code indeed does work and that return false
is not really required if you only want to stop the following of a link.
Python 3 includes an improved super() which allows use like this:
super().__init__(args)
In Anaconda Prompt (Anaconda 3),
Type: conda install tensorflow
command
This fix my issue in my Anaconda with Python 3.8.
Reference: https://panjeh.medium.com/modulenotfounderror-no-module-named-tensorflow-in-jupeter-1425afe23bd7
I currently used a wrapper class for my project and the main benefits I get (just a single benefit to widen the topic explanation):
Exception handling: My main class ,that another class wraps, has methods that are throwing exceptions if occurs any, so I created a wrapper class that handles the exceptions and logs them immediately. So, in my main scope, there is no exception handling. I just call a method and do something.
Easy Usage: I can easily initiate the object. Normally initiating phase is constructed of a lot of steps.
Code Readability: When another programmer opens my code, the code will seem very clear and easy to manipulate.
Hiding the Details: If you are generating a class that another programmer is going to use, then you can wrap the details like "error handling, exception handling, logging messages and etc..." so that the programmer will not be have to handle the chaos, just simply uses the methods.
But if I am the one who designs the API and gets to choose the data types, then what are the guidelines?
For input parameters it's best to accept the most generic interface that does what you need. It is seldom just a tuple or list - more often it's sequence, sliceable or even iterable. Python's duck typing usually gets it for free, unless you explicitly check input types. Don't do that unless absolutely unavoidable.
For the data that you produce (output parameters) just return what's most convenient for you, e.g. return whatever datatype you keep or whatever your helper function returns.
One thing to keep in mind is to avoid returning a list (or any other mutable) that's part of your state, e.g.
class ThingsKeeper
def __init__(self):
self.__things = []
def things(self):
return self.__things #outside objects can now modify your state
def safer(self):
return self.__things[:] #it's copy-on-write, shouldn't hurt performance
To report differences between dirA and dirB, while also updating/syncing.
rsync -auv <dirA> <dirB>
Using List.sort()
and Comparator.comparingLong()
numberList.sort(Comparator.comparingLong(x -> -x));
Okay- here we go:
(In a "silverlight app": please check first that silverlight is checked in "web" in your server project "properties"- If that didnt solve it then try this beneath)
On first time do: run this first: devenv.exe /ResetSettings and 1: In top menu click on debug tag 2: click options and settings 3: In "debugging" and under "general" find "enable .net framework source stepping" 4: Tick the box. 5: And now all the symbols will be downloaded and reconfigured :)
If it happens again after the above just clear the folder where the symbols are:
1: In top menu click on debug tag 2: click options and settings 3: In "debugging" and under "symbols" find the button "empty symbol cache" and click it.
Assuming your data is in column A, add a formula to column B
="'" & A1 & "'"
and copy the formula down. If you now save to CSV, you should get the quoted values. If you need to keep it in Excel format, copy column B then paste value to get rid of the formula.
If it's a .mdf database and the connection string was saved when it was created, you should be able to access it via:
Dim cn As SqlConnection = New SqlConnection(My.Settings.DatabaseNameConnectionString)
Hope that helps someone.
I think "disabled" excludes the input from being sent on the POST
According to the previous answers, it seems that mathematically, we simply think in a higher order. Instead of thinking a value x having type X, we think of a function x: T ? X, where T is the type of time, be it the natural numbers, the integers or the continuum. Now when we write y := x + 1 in the programming language, we actually mean the equation y(t) = x(t) + 1.
There can be a difference for loops. This is the practical application of post/pre-increment.
int i = 0;
while(i++ <= 10) {
Console.Write(i);
}
Console.Write(System.Environment.NewLine);
i = 0;
while(++i <= 10) {
Console.Write(i);
}
Console.ReadLine();
While the first one counts to 11 and loops 11 times, the second does not.
Mostly this is rather used in a simple while(x-- > 0 ) ; - - Loop to iterate for example all elements of an array (exempting foreach-constructs here).
I'll start with your last question:
Why are these new categories needed?
The C++ standard contains many rules that deal with the value category of an expression. Some rules make a distinction between lvalue and rvalue. For example, when it comes to overload resolution. Other rules make a distinction between glvalue and prvalue. For example, you can have a glvalue with an incomplete or abstract type but there is no prvalue with an incomplete or abstract type. Before we had this terminology the rules that actually need to distinguish between glvalue/prvalue referred to lvalue/rvalue and they were either unintentionally wrong or contained lots of explaining and exceptions to the rule a la "...unless the rvalue is due to unnamed rvalue reference...". So, it seems like a good idea to just give the concepts of glvalues and prvalues their own name.
What are these new categories of expressions? How do these new categories relate to the existing rvalue and lvalue categories?
We still have the terms lvalue and rvalue that are compatible with C++98. We just divided the rvalues into two subgroups, xvalues and prvalues, and we refer to lvalues and xvalues as glvalues. Xvalues are a new kind of value category for unnamed rvalue references. Every expression is one of these three: lvalue, xvalue, prvalue. A Venn diagram would look like this:
______ ______
/ X \
/ / \ \
| l | x | pr |
\ \ / /
\______X______/
gl r
Examples with functions:
int prvalue();
int& lvalue();
int&& xvalue();
But also don't forget that named rvalue references are lvalues:
void foo(int&& t) {
// t is initialized with an rvalue expression
// but is actually an lvalue expression itself
}
Below is a Swift Playground example:
import UIKit
let jsonString = "{\"name\": \"John Doe\", \"phone\":123456}"
let data = jsonString.data(using: .utf8)
var jsonObject: Any
do {
jsonObject = try JSONSerialization.jsonObject(with: data!) as Any
if let obj = jsonObject as? NSDictionary {
print(obj["name"])
}
} catch {
print("error")
}
Extra Tips:
Multiple "nots", input that is NOT hidden and NOT disabled:
:not([type="hidden"]):not([disabled])
Also did you know you can do this:
node.parentNode.querySelectorAll('div');
This is equivelent to jQuery's:
$(node).parent().find('div');
Which will effectively find all divs in "node" and below recursively, HOT DAMN!
You can't run 16-bit applications (or components) on 64-bit versions of Windows. That emulation layer no longer exists. The 64-bit versions already have to provide a compatibility layer for 32-bit applications.
Support for 16-bit had to be dropped eventually, even in a culture where backwards-compatibility is of sacred import. The transition to 64-bit seemed like as good a time as any. It's hard to imagine anyone out there in the wild that is still using 16-bit applications and seeking to upgrade to 64-bit OSes.
What would be the best way to get round this problem?
If the component itself is 16-bit, then using a virtual machine running a 32-bit version of Windows is your only real choice. Oracle's VirtualBox is free, and a perennial favorite.
If only the installer is 16-bit (and it installs a 32-bit component), then you might be able to use a program like 7-Zip to extract the contents of the installer and install them manually. Let's just say this "solution" is high-risk and you should have few, if any, expectations.
It's high time to upgrade away from 16-bit stuff, like Turbo C++ and Sheridan controls. I've yet to come across anything that the Sheridan controls can do that the built-in controls can't do and haven't been able to do since Windows 95.
Yes, Promises are asynchronous callbacks. They can't do anything that callbacks can't do, and you face the same problems with asynchrony as with plain callbacks.
However, Promises are more than just callbacks. They are a very mighty abstraction, allow cleaner and better, functional code with less error-prone boilerplate.
So what's the main idea?
Promises are objects representing the result of a single (asynchronous) computation. They resolve to that result only once. There's a few things what this means:
Promises implement an observer pattern:
return
a Promise objectPromises are chainable (monadic, if you want):
.then()
method. It will take a callback to be called with the first result, and returns a promise for the result of the promise that the callback returns.Sounds complicated? Time for a code example.
var p1 = api1(); // returning a promise
var p3 = p1.then(function(api1Result) {
var p2 = api2(); // returning a promise
return p2; // The result of p2 …
}); // … becomes the result of p3
// So it does not make a difference whether you write
api1().then(function(api1Result) {
return api2().then(console.log)
})
// or the flattened version
api1().then(function(api1Result) {
return api2();
}).then(console.log)
Flattening does not come magically, but you can easily do it. For your heavily nested example, the (near) equivalent would be
api1().then(api2).then(api3).then(/* do-work-callback */);
If seeing the code of these methods helps understanding, here's a most basic promise lib in a few lines.
What's the big fuss about promises?
The Promise abstraction allows much better composability of functions. For example, next to then
for chaining, the all
function creates a promise for the combined result of multiple parallel-waiting promises.
Last but not least Promises come with integrated error handling. The result of the computation might be that either the promise is fulfilled with a value, or it is rejected with a reason. All the composition functions handle this automatically and propagate errors in promise chains, so that you don't need to care about it explicitly everywhere - in contrast to a plain-callback implementation. In the end, you can add a dedicated error callback for all occurred exceptions.
Not to mention having to convert things to promises.
That's quite trivial actually with good promise libraries, see How do I convert an existing callback API to promises?
The shorter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) & ((-2:2) <= 0)
# [1] FALSE FALSE TRUE FALSE FALSE
The longer form evaluates left to right examining only the first element of each vector, so the above gives
((-2:2) >= 0) && ((-2:2) <= 0)
# [1] FALSE
As the help page says, this makes the longer form "appropriate for programming control-flow and [is] typically preferred in if clauses."
So you want to use the long forms only when you are certain the vectors are length one.
You should be absolutely certain your vectors are only length 1, such as in cases where they are functions that return only length 1 booleans. You want to use the short forms if the vectors are length possibly >1. So if you're not absolutely sure, you should either check first, or use the short form and then use all
and any
to reduce it to length one for use in control flow statements, like if
.
The functions all
and any
are often used on the result of a vectorized comparison to see if all or any of the comparisons are true, respectively. The results from these functions are sure to be length 1 so they are appropriate for use in if clauses, while the results from the vectorized comparison are not. (Though those results would be appropriate for use in ifelse
.
One final difference: the &&
and ||
only evaluate as many terms as they need to (which seems to be what is meant by short-circuiting). For example, here's a comparison using an undefined value a
; if it didn't short-circuit, as &
and |
don't, it would give an error.
a
# Error: object 'a' not found
TRUE || a
# [1] TRUE
FALSE && a
# [1] FALSE
TRUE | a
# Error: object 'a' not found
FALSE & a
# Error: object 'a' not found
Finally, see section 8.2.17 in The R Inferno, titled "and and andand".
I'd like to build upon some of the answers above and given elsewhere and suggest using absolute positioning along with the :before pseudo class. A lot of the examples above (and in similar questions) are utilizing custom HTML markup, including Font Awesome's method of handling. This goes against the original question, and isn't strictly necessary.
ul {
list-style-type: none;
padding-left: 20px;
}
li {
position: relative;
padding-left: 20px;
margin-bottom: 10px
}
li:before {
position: absolute;
top: 0;
left: 0;
font-family: FontAwesome;
content: "\f058";
color: green;
}
That's basically it. You can get the ISO value for use in CSS content on the Font Awesome cheatsheet. Simply use the last 4 alphanumerics prefixed with a backslash. So []
becomes \f058
Define a callback interface to receive whatever parameters you want to pass along in the completion notification. Then invoke it at the end of the task.
You could even write a general wrapper for Runnable tasks, and submit these to ExecutorService
. Or, see below for a mechanism built into Java 8.
class CallbackTask implements Runnable {
private final Runnable task;
private final Callback callback;
CallbackTask(Runnable task, Callback callback) {
this.task = task;
this.callback = callback;
}
public void run() {
task.run();
callback.complete();
}
}
With CompletableFuture
, Java 8 included a more elaborate means to compose pipelines where processes can be completed asynchronously and conditionally. Here's a contrived but complete example of notification.
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.TimeUnit;
public class GetTaskNotificationWithoutBlocking {
public static void main(String... argv) throws Exception {
ExampleService svc = new ExampleService();
GetTaskNotificationWithoutBlocking listener = new GetTaskNotificationWithoutBlocking();
CompletableFuture<String> f = CompletableFuture.supplyAsync(svc::work);
f.thenAccept(listener::notify);
System.out.println("Exiting main()");
}
void notify(String msg) {
System.out.println("Received message: " + msg);
}
}
class ExampleService {
String work() {
sleep(7000, TimeUnit.MILLISECONDS); /* Pretend to be busy... */
char[] str = new char[5];
ThreadLocalRandom current = ThreadLocalRandom.current();
for (int idx = 0; idx < str.length; ++idx)
str[idx] = (char) ('A' + current.nextInt(26));
String msg = new String(str);
System.out.println("Generated message: " + msg);
return msg;
}
public static void sleep(long average, TimeUnit unit) {
String name = Thread.currentThread().getName();
long timeout = Math.min(exponential(average), Math.multiplyExact(10, average));
System.out.printf("%s sleeping %d %s...%n", name, timeout, unit);
try {
unit.sleep(timeout);
System.out.println(name + " awoke.");
} catch (InterruptedException abort) {
Thread.currentThread().interrupt();
System.out.println(name + " interrupted.");
}
}
public static long exponential(long avg) {
return (long) (avg * -Math.log(1 - ThreadLocalRandom.current().nextDouble()));
}
}
I am not sure if this is pythonic, but seems to work
def alternate_list(a):
return a[::2], a[1::2]
key_list,value_list = alternate_list(a)
b = dict(zip(key_list,value_list))
i had the same issue, but I just typed export
on top and erased the default one on the bottom. Scroll down and check the comments.
import React, { Component } from "react";
export class Counter extends Component { // type this
export default Counter; // this is eliminated
I found a dirty solution:
/bin/bash -c "ulimit -s 65500; exec /usr/local/bin/node --stack-size=65500 /path/to/app.js"
It just increase call stack limit. I think that this is not suitable for production code, but I needed it for script that run only once.
Swift 5+
extension Date {
func get(_ type: Calendar.Component)-> String {
let calendar = Calendar.current
let t = calendar.component(type, from: self)
return (t < 10 ? "0\(t)" : t.description)
}
}
Usage:
print(Date().get(.year)) // => 2020
print(Date().get(.month)) // => 08
print(Date().get(.day)) // => 18
Log in as root, then run the following MySQL commands:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost';
FLUSH PRIVILEGES;
First of all can I just say that I really really love the Internet community for all that it does in providing answers to everybody. I don't post a lot but everybody's posting here and on so many boards helped me so much! None of them gave me the right answer mind you, but here is my unique solution to this nightmare of a spending 2 solid days trying to install MySQL 5.5.9 on Snow Leopard 10.6. Skip to bottom for resolution.
Here's what happened.
I had a server crash recently. The server was rebuilt and of course MySQL 5.5.8 didn't work. What a worthless piece. I had 5.1.54 on my other machine. That had been a pain to install as well but not like this.
I had all sorts of issues installing with the dmg from mysql.org, installing mysql5 using macports, uninstalling trying to revert to 5.1.54 (couldn't because I couldn't find the receipt file with that info even though I followed the directions). After rming everything I could find related to mysql and then reinstalling 5.5.8 everything worked! Until I rebooted... ? I looked in my system preference mysql pane and found mysql server wasn't starting. (skip to end for resolution)
My first error (super common) included: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysql.sock' and numerous other EXTREMELY common issues related to mysql.sock http://forums.mysql.com/read.php?11,9689,13272
Here were things I tried: 1)Create /etc/my.cnf file with the proper paths to mysql.sock. I even tried modifying mysql.server with vi directly. Modifying the php.ini was worthless. Nothing worked because MySQL wasn't starting, therefore it wasn't creating mysql.sock in the first place. Maybe you can point to the directory it is being created, and not the actual full file path i.e. not /tmp/mysql.sock but /tmp It was suggested but wasn't working because there was no mysql.sock because mysqld wasn't spawning.
2)Basedir and datadir modifications didn't work because there was no mysql.sock to point too.
Why? Because the mysql daemon wasn't starting. Without anything to start mysqld and thereby create mysql.sock I was doomed. They are an important part of the solution but if you try them and still get errors, you will know why.
3)sudo chown -R root:wheel /Library/StartupItems/MySQLCOM/
didn't solve my problem. I ended up having that folder and all items set to root:wheel though in the end, because it was one of the many things recommended and its working. Maybe it could remain _mysql but wheel works.
4)Copy mysql.sock from another machine. Doesn't work. I had searched and searched my new machine and couldn't find mysql.sock. I was using find / | grep mysql.sock because locate mysql wasn't finding anything. Besides I was trying so many different things it wasn't updating enough to find my new installs. I now like find much more than locate, even though you can update the locate db. Anyhow you can't copy mysql.sock, even if you tar it because its a 0 byte file.
THE RESOLUTION: I finally stumbled onto the solution. I finally just typed mysqld from command line while I was in the proper bin directory. It said another process was running. _mysql was spawning a process that I could see in the Activity Monitor. I killed the active mysql process and when I typed mysqld again I found it was creating my mysql.sock file in the /private/tmp/mysql.sock
The mysql pref pane wouldn't start the right process on login, so I just disabled that for being worthless. It wouldn't start mysql because no mysql.sock was being created.
By then I had figured out that mysqld creates mysql.sock. I then found /opt/local/mysql/ and typed "open bin" in the terminal window. This opened the directory with mysqld in it.
I went to login items in the system preferences in my account settings and dragged and dropped the mysqld file onto the startup items there. THAT worked. Finally!
It works flawlessly because mysqld is starting up at login, which means mysql.sock is being created so no more errors about not being able to find mysql.sock.
Just set css property of container div 'pointer-events' as none i.e. 'pointer-events:none;'
After use codevar json = @Html.Raw(Json.Encode(@Model.CollegeInformationlist));
You need use JSON.parse(JSON.stringify(json))
;
All answers are awesome and explained everything very well
but I just want to point out different way for passing args to main method
in visual studio
like this image
and happy knowing secrets
System.Diagnostics.Process.Start("PathToExe.exe");
if ($string =~ m/something/) {
# Do work
}
Where something
is a regular expression.
You can convert a string to a DATE using the TO_DATE function, then reformat the date as another string using TO_CHAR, i.e.:
SELECT TO_CHAR(
TO_DATE('15/August/2009,4:30 PM'
,'DD/Month/YYYY,HH:MI AM')
,'DD-MM-YYYY')
FROM DUAL;
15-08-2009
For example, if your table name is MYTABLE and the varchar2 column is MYDATESTRING:
SELECT TO_CHAR(
TO_DATE(MYDATESTRING
,'DD/Month/YYYY,HH:MI AM')
,'DD-MM-YYYY')
FROM MYTABLE;
Try executing this SQL command:
> grant all privileges
on YOUR_DATABASE.*
to 'asdfsdf'@'localhost'
identified by 'your_password';
> flush privileges;
It seems that you are having issues with connecting to the database and not writing to the folder you’re mentioning.
Also, make sure you have granted FILE
to user 'asdfsdf'@'localhost'
.
> GRANT FILE ON *.* TO 'asdfsdf'@'localhost';
You can also "WAITFOR" a "TIME":
RAISERROR('Im about to wait for a certain time...', 0, 1) WITH NOWAIT
WAITFOR TIME '16:43:30.000'
RAISERROR('I waited!', 0, 1) WITH NOWAIT
You can do it the following way:
DoCmd.OpenQuery "yourQueryName", acViewNormal, acEdit
OR
CurrentDb.OpenRecordset("yourQueryName")
Just add -o nonempty
in command line, like this:
s3fs -o nonempty <bucket-name> </mount/point/>
I don't know why you're using the Window's Mutex instead of Python's. Using the Python methods, this is pretty simple:
from threading import Thread, Lock
mutex = Lock()
def processData(data):
mutex.acquire()
try:
print('Do some stuff')
finally:
mutex.release()
while True:
t = Thread(target = processData, args = (some_data,))
t.start()
But note, because of the architecture of CPython (namely the Global Interpreter Lock) you'll effectively only have one thread running at a time anyway--this is fine if a number of them are I/O bound, although you'll want to release the lock as much as possible so the I/O bound thread doesn't block other threads from running.
An alternative, for Python 2.6 and later, is to use Python's multiprocessing
package. It mirrors the threading
package, but will create entirely new processes which can run simultaneously. It's trivial to update your example:
from multiprocessing import Process, Lock
mutex = Lock()
def processData(data):
with mutex:
print('Do some stuff')
if __name__ == '__main__':
while True:
p = Process(target = processData, args = (some_data,))
p.start()
You need to stringify the json, not calling toString
var buf = Buffer.from(JSON.stringify(obj));
And for converting string to json obj :
var temp = JSON.parse(buf.toString());
By default any integral primitive data type (byte, short, int, long) will be treated as int type by java compiler. For byte and short, as long as value assigned to them is in their range, there is no problem and no suffix required. If value assigned to byte and short exceeds their range, explicit type casting is required.
Ex:
byte b = 130; // CE: range is exceeding.
to overcome this perform type casting.
byte b = (byte)130; //valid, but chances of losing data is there.
In case of long data type, it can accept the integer value without any hassle. Suppose we assign like
Long l = 2147483647; //which is max value of int
in this case no suffix like L/l is required. By default value 2147483647 is considered by java compiler is int type. Internal type casting is done by compiler and int is auto promoted to Long type.
Long l = 2147483648; //CE: value is treated as int but out of range
Here we need to put suffix as L to treat the literal 2147483648 as long type by java compiler.
so finally
Long l = 2147483648L;// works fine.
I had the exact same problem, found that I was missing
<mdb>
<resource-adapter-ref resource-adapter-name="hornetq-ra"/>
<bean-instance-pool-ref pool-name="mdb-strict-max-pool"/>
</mdb>
under
<subsystem xmlns="urn:jboss:domain:ejb3:1.2">
in standalone/configuration/standalone.xml
I would say using tryParse, it'll return 'false' if the uint is to big for an int.
Don't forget that a uint can go much bigger than a int, as long as you going > 0
Your question as I understand it is divided in two parts, part one being you need a better understanding of the Naive Bayes classifier & part two being the confusion surrounding Training set.
In general all of Machine Learning Algorithms need to be trained for supervised learning tasks like classification, prediction etc. or for unsupervised learning tasks like clustering.
During the training step, the algorithms are taught with a particular input dataset (training set) so that later on we may test them for unknown inputs (which they have never seen before) for which they may classify or predict etc (in case of supervised learning) based on their learning. This is what most of the Machine Learning techniques like Neural Networks, SVM, Bayesian etc. are based upon.
So in a general Machine Learning project basically you have to divide your input set to a Development Set (Training Set + Dev-Test Set) & a Test Set (or Evaluation set). Remember your basic objective would be that your system learns and classifies new inputs which they have never seen before in either Dev set or test set.
The test set typically has the same format as the training set. However, it is very important that the test set be distinct from the training corpus: if we simply reused the training set as the test set, then a model that simply memorized its input, without learning how to generalize to new examples, would receive misleadingly high scores.
In general, for an example, 70% of our data can be used as training set cases. Also remember to partition the original set into the training and test sets randomly.
Now I come to your other question about Naive Bayes.
To demonstrate the concept of Naïve Bayes Classification, consider the example given below:
As indicated, the objects can be classified as either GREEN
or RED
. Our task is to classify new cases as they arrive, i.e., decide to which class label they belong, based on the currently existing objects.
Since there are twice as many GREEN
objects as RED
, it is reasonable to believe that a new case (which hasn't been observed yet) is twice as likely to have membership GREEN
rather than RED
. In the Bayesian analysis, this belief is known as the prior probability. Prior probabilities are based on previous experience, in this case the percentage of GREEN
and RED
objects, and often used to predict outcomes before they actually happen.
Thus, we can write:
Prior Probability of GREEN
: number of GREEN objects / total number of objects
Prior Probability of RED
: number of RED objects / total number of objects
Since there is a total of 60
objects, 40
of which are GREEN
and 20 RED
, our prior probabilities for class membership are:
Prior Probability for GREEN
: 40 / 60
Prior Probability for RED
: 20 / 60
Having formulated our prior probability, we are now ready to classify a new object (WHITE
circle in the diagram below). Since the objects are well clustered, it is reasonable to assume that the more GREEN
(or RED
) objects in the vicinity of X, the more likely that the new cases belong to that particular color. To measure this likelihood, we draw a circle around X which encompasses a number (to be chosen a priori) of points irrespective of their class labels. Then we calculate the number of points in the circle belonging to each class label. From this we calculate the likelihood:
From the illustration above, it is clear that Likelihood of X
given GREEN
is smaller than Likelihood of X
given RED
, since the circle encompasses 1
GREEN
object and 3
RED
ones. Thus:
Although the prior probabilities indicate that X
may belong to GREEN
(given that there are twice as many GREEN
compared to RED
) the likelihood indicates otherwise; that the class membership of X
is RED
(given that there are more RED
objects in the vicinity of X
than GREEN
). In the Bayesian analysis, the final classification is produced by combining both sources of information, i.e., the prior and the likelihood, to form a posterior probability using the so-called Bayes' rule (named after Rev. Thomas Bayes 1702-1761).
Finally, we classify X as RED
since its class membership achieves the largest posterior probability.
Escaped percent sign is double percent (%%):
System.out.printf("2 out of 10 is %d%%", 20);
I'm answering this so that I can find the solution when I have to google this error again.
Set project compile output path to path_of_the_project_folder/out
. That's what is working today.
The intellj documentation makes it seem like we can select any folder but that's not the case.
Here is the way that I've followed,
int[] selRows = ((GridView)gridControl1.MainView).GetSelectedRows();
DataRowView selRow = (DataRowView)(((GridView)gridControl1.MainView).GetRow(selRows[0]));
txtName.Text = selRow["name"].ToString();
Also you can iterate through selected rows using the selRows array. Here the code describes how to get data only from first selected row. You can insert these code lines to click event of the grid.
Try putting opacity:0; your select element will be invisible but the options will be visible when you click on it.
I don't know if this can be related to the OP's post but I was missing the [HttpGet] annotation and that was what was causing the error, as stated by @dinesh_ravva methods are assumed to be HttpPost by default.
I think the extension is intended to allow a similar syntax for inserts and updates. In Oracle, a similar syntactical trick is:
UPDATE table SET (col1, col2) = (SELECT val1, val2 FROM dual)
Wanted to add my solution here as well. This is similar to Ravindu's answer above.
I added width: 'resolve',
as a property within the select2:
$('#searchFilter').select2({
width: 'resolve',
});
Then I added a min-width
property to select2-container
with !important
:
.select2-container {
min-width: 100% !important;
}
On the select element, the style='100px !important;'
attribute needed !important
to work:
<select class="form-control" style="width: 160px;" id="searchFilter" name="searchfilter[]">
You can use the function RESHAPE:
B = reshape(A.',1,[]);
Setting colspan="0"
is support only in firefox.
In other browsers we can get around it with:
// Auto calculate table colspan if set to 0
var colCount = 0;
$("td[colspan='0']").each(function(){
colCount = 0;
$(this).parents("table").find('tr').eq(0).children().each(function(){
if ($(this).attr('colspan')){
colCount += +$(this).attr('colspan');
} else {
colCount++;
}
});
$(this).attr("colspan", colCount);
});
In AngularJS (version 1.x), there is a build-in directive ngRequired
<input type='email'
name='email'
ng-model='user.email'
placeholder='[email protected]'
ng-required='!user.phone' />
<input type='text'
ng-model='user.phone'
placeholder='(xxx) xxx-xxxx'
ng-required='!user.email' />
In Angular2 or above
<input type='email'
name='email'
[(ngModel)]='user.email'
placeholder='[email protected]'
[required]='!user.phone' />
<input type='text'
[(ngModel)]='user.phone'
placeholder='(xxx) xxx-xxxx'
[required]='!user.email' />
Had to change build tools version from some old one in build.gradle
for project module:
android {
...
buildToolsVersion "24.0.2"
...
}
The Combinations
package is not part of the standard CRAN set of packages, but is rather part of a different repository, omegahat. To install it you need to use
install.packages("Combinations", repos = "http://www.omegahat.org/R")
See the documentation at http://www.omegahat.org/Combinations/
class enum.Enum
is a class that solves all your enumeration needs, so you just need to inherit from it, and add your own fields. Then from then on, all you need to do is to just call it's attributes: name
& value
:
from enum import Enum
class Letter(Enum):
A = 1
B = 2
C = 3
print({i.name: i.value for i in Letter})
# prints {'A': 1, 'B': 2, 'C': 3}
First, modify your search filter to only look for users and not contacts:
(&(objectCategory=person)(objectClass=user)(sAMAccountName=BTYNDALL))
You can enumerate all of the domains of a forest by connecting to the configuration partition and enumerating all the entries in the partitions container. Sorry I don't have any C# code right now but here is some vbscript code I've used in the past:
Set objRootDSE = GetObject("LDAP://RootDSE")
AdComm.Properties("Sort on") = "name"
AdComm.CommandText = "<LDAP://cn=Partitions," & _
objRootDSE.Get("ConfigurationNamingContext") & ">;" & _
"(&(objectcategory=crossRef)(systemFlags=3));" & _
"name,nCName,dnsRoot;onelevel"
set AdRs = AdComm.Execute
From that you can retrieve the name and dnsRoot of each partition:
AdRs.MoveFirst
With AdRs
While Not .EOF
dnsRoot = .Fields("dnsRoot")
Set objOption = Document.createElement("OPTION")
objOption.Text = dnsRoot(0)
objOption.Value = "LDAP://" & dnsRoot(0) & "/" & .Fields("nCName").Value
Domain.Add(objOption)
.MoveNext
Wend
End With
From memory, Excel uses the machine-specific ANSI encoding. So this would be Windows-1252 for a EN-US installation, 1251 for Russian, etc.
If you want the quick and dirty way and don't worry about XSS attack, use params.merge
to keep previous parameters. e.g.
<%= link_to 'Link', params.merge({:per_page => 20}) %>
see: https://stackoverflow.com/a/4174493/445908
Otherwise , check this answer: params.merge and cross site scripting
For me it was using {{ }} instead of {% %}:
href="{{ static 'bootstrap.min.css' }}" # wrong
href="{% static 'bootstrap.min.css' %}" # right
like "a darren" answer but minor modification
li
{
background: url("images/bullet.gif") left center no-repeat;
padding-left: 14px;
margin-left: 24px;
}
it works cross browser, just adjust the padding and margin
Edit for nested: add this style to add margin-left to the sub-nested list
ul ul{ margin-left:15px; }
After several tries, I got it! I'm setting the keyboard values programmatically like this:
myEditText.setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_VARIATION_PASSWORD);
Or if you want you can edit the XML like so:
android: inputType = "numberPassword"
Both configs will display password bullets, so we need to create a custom ClickableSpan
class:
private class NumericKeyBoardTransformationMethod extends PasswordTransformationMethod {
@Override
public CharSequence getTransformation(CharSequence source, View view) {
return source;
}
}
Finally we need to implement it on the EditText
in order to display the characters typed.
myEditText.setTransformationMethod(new NumericKeyBoardTransformationMethod());
This is how my keyboard looks like now:
Consider the array a:
var a ={'name1':1, 'name2':2}
If you want to check if 'name1' exists in a, simply test it with in
:
if('name1' in a){
console.log('name1 exists in a')
}else
console.log('name1 is not in a')
var cubes = [["string", "string"], ["string", "string"]];
for(var i = 0; i < cubes.length; i++) {
for(var j = 0; j < cubes[i].length; j++) {
console.log(cubes[i][j]);
}
}
Use substring to get everything to the left of _bar. But first you have to get the instr of _bar in the string:
str.substring(3, 7);
3 is that start and 7 is the length.
If you want new columns showing year and month separately you can do this:
df['year'] = pd.DatetimeIndex(df['ArrivalDate']).year
df['month'] = pd.DatetimeIndex(df['ArrivalDate']).month
or...
df['year'] = df['ArrivalDate'].dt.year
df['month'] = df['ArrivalDate'].dt.month
Then you can combine them or work with them just as they are.
I strongly prefer using gbasename
, which is part of GNU coreutils.
What you want to use is this property:
dt.Columns[0].DataType
The DataType
property will set to one of the following:
Boolean
Byte
Char
DateTime
Decimal
Double
Int16
Int32
Int64
SByte
Single
String
TimeSpan
UInt16
UInt32
UInt64
A little update on this post: if you are using ktx within your Android project, there is a little helper method that makes updating LayoutParams a lot easier.
If you want to update e.g. only the width you can do that with the following line in Kotlin.
tv.updateLayoutParams { width = WRAP_CONTENT }
To obviate this problem, I devised a solution with the repackage package, which has worked for me for some time. It adds the upper directory to the lib path:
import repackage
repackage.up()
from mypackage.mymodule import myfunction
Repackage can make relative imports that work in a wide range of cases, using an intelligent strategy (inspecting the call stack).
Non-reflective solution for Java 8, without using a series of if's, would be to stream all fields and check for nullness:
return Stream.of(id, name).allMatch(Objects::isNull);
This remains quite easy to maintain while avoiding the reflection hammer. This will return true for null attributes.
There are lots of different ways to do this. One way is to use the RewriteRule techniques mentioned earlier to mask query string values.
One of the ways I really like is if you use the front controller pattern, you can also use urls like http://yoursite.com/index.php/path/to/your/page/here and parse the value of $_SERVER['REQUEST_URI'].
You can easily extract the /path/to/your/page/here bit with the following bit of code:
$route = substr($_SERVER['REQUEST_URI'], strlen($_SERVER['SCRIPT_NAME']));
From there, you can parse it however you please, but for pete's sake make sure you sanitise it ;)
You cannot manually expire a token after it has been created. Thus, you cannot log out with JWT on the server-side as you do with sessions.
JWT is stateless, meaning that you should store everything you need in the payload and skip performing a DB query on every request. But if you plan to have a strict log out functionality, that cannot wait for the token auto-expiration, even though you have cleaned the token from the client-side, then you might need to neglect the stateless logic and do some queries. so what's a solution?
Set a reasonable expiration time on tokens
Delete the stored token from client-side upon log out
Query provided token against The Blacklist on every authorized request
“Blacklist” of all the tokens that are valid no more and have not expired yet. You can use a DB that has a TTL option on documents which would be set to the amount of time left until the token is expired.
Redis is a good option for blacklist, which will allow fast in-memory access to the list. Then, in the middleware of some kind that runs on every authorized request, you should check if the provided token is in The Blacklist. If it is you should throw an unauthorized error. And if it is not, let it go and the JWT verification will handle it and identify if it is expired or still active.
For more information, see How to log out when using JWT. by Arpy Vanyan
These have the same end result, but I would simply add that using the literal syntax can help one become accustomed to the syntax of JSON (a string-ified subset of JavaScript literal object syntax), so it might be a good practice to get into.
One other thing: you might have subtle errors if you forget to use the new
operator. So, using literals will help you avoid that problem.
Ultimately, it will depend on the situation as well as preference.
try:
%matplotlib notebook
EDIT for JupyterLab users:
Follow the instructions to install jupyter-matplotlib
Then the magic command above is no longer needed, as in the example:
# Enabling the `widget` backend.
# This requires jupyter-matplotlib a.k.a. ipympl.
# ipympl can be install via pip or conda.
%matplotlib widget
# aka import ipympl
import matplotlib.pyplot as plt
plt.plot([0, 1, 2, 2])
plt.show()
Finally, note Maarten Breddels' reply; IMHO ipyvolume is indeed very impressive (and useful!).
As also noted in the docs here.
Go to Python X.X/Lib
and add these lines to the site.py
there,
import sys
sys.path.append("yourpathstring")
This changes your sys.path
so that on every load, it will have that value in it..
As stated here about site.py
,
This module is automatically imported during initialization. Importing this module will append site-specific paths to the module search path and add a few builtins.
For other possible methods of adding some path to sys.path
see these docs
If you use Java 1.5 or beyond you could use:
List<String> S = new ArrayList<String>();
s.add("My text");
for (String item : S) {
System.out.println(item);
}
Check which version of Entity Framework reference you have in your References and make sure that it matches with your configSections
node in Web.config
file. In my case it was pointing to version 5.0.0.0 in my configSections and my reference was 6.0.0.0. I just changed it and it worked...
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
Width and/or height in tables are not standard anymore; as Ianzz says, they are deprecated. Instead the best way to do this is to have a block element inside your table cell that will hold the cell open to your desired size:
<table>
<tr>
<td valign="top">
<div class="left_menu">
<div class="menu_item">
<a href="#">Home</a>
</div>
</div>
</td>
<td valign="top" class="content">Content</td>
</tr>
</table>
CSS
.content {
width: 1000px;
}
.left_menu {
background: none repeat scroll 0 0 #333333;
border-radius: 5px 5px 5px 5px;
font-family: Arial,Helvetica,sans-serif;
font-size: 12px;
font-weight: bold;
padding: 5px;
width: 200px;
}
.menu_item {
background: none repeat scroll 0 0 #CCCCCC;
border-bottom: 1px solid #999999;
border-radius: 5px 5px 5px 5px;
border-top: 1px solid #FFFFCC;
cursor: pointer;
padding: 5px;
}
You are better off using an iterator instead. Relevant: http://docs.python.org/library/fileinput.html
From the docs:
import fileinput
for line in fileinput.input("filename"):
process(line)
This will avoid copying the whole file into memory at once.
I changed a few things to work with Option Explicit
, and the code ran fine against a cell containing "abc.123"
, which returned "abc.12,"
. There were no compile errors.
Option Explicit ' This is new
Public Function ProcessString(input_string As String) As String
' The temp string used throughout the function
Dim temp_string As String
Dim i As Integer ' This is new
Dim return_string As String ' This is new
For i = 1 To Len(input_string)
temp_string = Mid(input_string, i, 1)
If temp_string Like "[A-Z, a-z, 0-9, :, -]" Then
return_string = return_string & temp_string
End If
Next i
return_string = Mid(return_string, 1, (Len(return_string) - 1))
ProcessString = return_string & ", "
End Function
I'll suggest you post more of your relevant code (that calls this function). You've stated that last_name is a String, but it appears that may not be the case. Step through your code line by line and ensure that this is actually the case.
For those who have updated to the latest version of google-play-services_lib and/or have this error Google Play services out of date. Requires 3136100 but found 2012110
this newer version of com.google.android.gms.apk (Google Play Services 3.1.36) and com.android.vending.apk (Google Play Store 4.1.6) should work.
Test with this configuration on Android SDK Tools 22.0.1. Another configuration that targets pure Android, not the Google one, should work too.
...
Execute this in the terminal / cmd
adb -e install com.google.android.gms.apk
adb -e install com.android.vending.apk
Restart the AVD
I found this way to be the easiest, cleanest and it works with the newest version of the software, which allow you to get all the bug fixes.
I would rather use FusedLocationApi
since OnMyLocationChangeListener
is deprecated.
First declare these 3 variables:
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private LocationListener mLocationListener;
Define methods:
private void initGoogleApiClient(Context context)
{
mGoogleApiClient = new GoogleApiClient.Builder(context).addApi(LocationServices.API).addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks()
{
@Override
public void onConnected(Bundle bundle)
{
mLocationRequest = LocationRequest.create();
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
mLocationRequest.setInterval(1000);
setLocationListener();
}
@Override
public void onConnectionSuspended(int i)
{
Log.i("LOG_TAG", "onConnectionSuspended");
}
}).build();
if (mGoogleApiClient != null)
mGoogleApiClient.connect();
}
private void setLocationListener()
{
mLocationListener = new LocationListener()
{
@Override
public void onLocationChanged(Location location)
{
String lat = String.valueOf(location.getLatitude());
String lon = String.valueOf(location.getLongitude());
Log.i("LOG_TAG", "Latitude = " + lat + " Longitude = " + lon);
}
};
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, mLocationListener);
}
private void removeLocationListener()
{
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, mLocationListener);
}
initGoogleApiClient()
is used to initialize GoogleApiClient
objectsetLocationListener()
is used to setup location change listenerremoveLocationListener()
is used to remove the listenerCall initGoogleApiClient
method to start the code working :) Don't forget to remove the listener (mLocationListener
) at the end to avoid memory leak issues.
I've done this, "parsing" a json response for a particular value, as follows:
curl $url | grep $var | awk '{print $2}' | sed s/\"//g
Clearly, $url here would be the twitter url, and $var would be "text" to get the response for that var.
Really, I think the only thing I'm doing the OP has left out is grep for the line with the specific variable he seeks. Awk grabs the second item on the line, and with sed I strip the quotes.
Someone smarter than I am could probably do the whole think with awk or grep.
Now, you could do it all with just sed:
curl $url | sed '/text/!d' | sed s/\"text\"://g | sed s/\"//g | sed s/\ //g
thus, no awk, no grep...I don't know why I didn't think of that before. Hmmm...
For those who want to use Python, here's a simple routine that removes parenthesized substrings, including those with nested parentheses. Okay, it's not a regex, but it'll do the job!
def remove_nested_parens(input_str):
"""Returns a copy of 'input_str' with any parenthesized text removed. Nested parentheses are handled."""
result = ''
paren_level = 0
for ch in input_str:
if ch == '(':
paren_level += 1
elif (ch == ')') and paren_level:
paren_level -= 1
elif not paren_level:
result += ch
return result
remove_nested_parens('example_(extra(qualifier)_text)_test(more_parens).ext')
Non-recursive DFS using ES6 generators
class Node {
constructor(name, childNodes) {
this.name = name;
this.childNodes = childNodes;
this.visited = false;
}
}
function *dfs(s) {
let stack = [];
stack.push(s);
stackLoop: while (stack.length) {
let u = stack[stack.length - 1]; // peek
if (!u.visited) {
u.visited = true; // grey - visited
yield u;
}
for (let v of u.childNodes) {
if (!v.visited) {
stack.push(v);
continue stackLoop;
}
}
stack.pop(); // black - all reachable descendants were processed
}
}
It deviates from typical non-recursive DFS to easily detect when all reachable descendants of given node were processed and to maintain the current path in the list/stack.
You can use this code:
This example takes a backup of sugarcrm database and dumps the output to sugarcrm.sql
# mysqldump -u root -ptmppassword sugarcrm > sugarcrm.sql
# mysqldump -u root -p[root_password] [database_name] > dumpfilename.sql
The sugarcrm.sql will contain drop table, create table and insert command for all the tables in the sugarcrm database. Following is a partial output of sugarcrm.sql, showing the dump information of accounts_contacts table:
--
accounts_contacts
DROP TABLE IF EXISTS `accounts_contacts`;
SET @saved_cs_client = @@character_set_client;
SET character_set_client = utf8;
CREATE TABLE `accounts_contacts` (
`id` varchar(36) NOT NULL,
`contact_id` varchar(36) default NULL,
`account_id` varchar(36) default NULL,
`date_modified` datetime default NULL,
`deleted` tinyint(1) NOT NULL default '0',
PRIMARY KEY (`id`),
KEY `idx_account_contact` (`account_id`,`contact_id`),
KEY `idx_contid_del_accid` (`contact_id`,`deleted`,`account_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
SET character_set_client = @saved_cs_client;
--
You use std::find
from <algorithm>
, which works equally well for std::list
and std::vector
. std::vector
does not have its own search/find function.
#include <list>
#include <algorithm>
int main()
{
std::list<int> ilist;
ilist.push_back(1);
ilist.push_back(2);
ilist.push_back(3);
std::list<int>::iterator findIter = std::find(ilist.begin(), ilist.end(), 1);
}
Note that this works for built-in types like int
as well as standard library types like std::string
by default because they have operator==
provided for them. If you are using using std::find
on a container of a user-defined type, you should overload operator==
to allow std::find
to work properly: EqualityComparable
concept
ul, li {_x000D_
list-style: none;_x000D_
margin: 0;_x000D_
padding: 0;_x000D_
}_x000D_
_x000D_
ul {_x000D_
display: flex;_x000D_
flex-wrap: wrap;_x000D_
}_x000D_
_x000D_
ul li {_x000D_
width: calc(100% / 3);_x000D_
}_x000D_
_x000D_
img {_x000D_
width: 100%;_x000D_
height: auto;_x000D_
}
_x000D_
<ul>_x000D_
<li>_x000D_
<img src="http://img2.vetton.ru//upl/1000/346/138/vetton_ru_sddu7-2560x1600.jpg" alt="">_x000D_
<br> Line 1_x000D_
<br> Line 2_x000D_
</li>_x000D_
<li>_x000D_
<img src="http://img2.vetton.ru//upl/1000/346/138/vetton_ru_mixwall66-2560x1600.jpg" alt="">_x000D_
<br> Line 1_x000D_
<br> Line 2_x000D_
<br> Line 3_x000D_
<br> Line 4_x000D_
</li>_x000D_
<li>_x000D_
<img src="http://img2.vetton.ru//upl/1000/346/138/vetton_ru_sddu7-2560x1600.jpg" alt="">_x000D_
<br> Line 1_x000D_
</li>_x000D_
<li>_x000D_
<img src="http://img2.vetton.ru//upl/1000/346/138/vetton_ru_mixwall66-2560x1600.jpg" alt="">_x000D_
<br> Line 1_x000D_
<br> Line 2_x000D_
</li>_x000D_
</ul>
_x000D_
herein lies the answer... IIS Settings
IIS-->Default SMTP Virtual Server-->Properties-->Access-->Relay restrictions just add or exclude the IPs you care about, should resolve the issue.
As mentioned in have debugger run application as different user (linked above), another extremely simple way to do this which doesn't require any more tools:
Click "Run as different user"
Enter credentials of the other user in the next pop-up window
Now when you debug the solution it will be with the other user's permissions.
Hint: if you are going to run multiple instances of Visual Studio, change the theme of it (like to "dark") so you can keep track of which one is which easily).
After git merge, if you get conflicts and you want either your or their
git checkout --theirs .
git checkout --ours .
Through Boost you can do it >
std::vector<boost::any> vecobj;
boost::shared_ptr<string> sharedString1(new string("abcdxyz!"));
boost::shared_ptr<int> sharedint1(new int(10));
vecobj.push_back(sharedString1);
vecobj.push_back(sharedint1);
> for inserting different object type in your vector container. while for accessing you have to use any_cast, which works like dynamic_cast, hopes it will work for your need.
This defines what shell (command interpreter) you are using for interpreting/running your script. Each shell is slightly different in the way it interacts with the user and executes scripts (programs).
When you type in a command at the Unix prompt, you are interacting with the shell.
E.g., #!/bin/csh
refers to the C-shell, /bin/tcsh
the t-shell, /bin/bash
the bash shell, etc.
You can tell which interactive shell you are using the
echo $SHELL
command, or alternatively
env | grep -i shell
You can change your command shell with the chsh
command.
Each has a slightly different command set and way of assigning variables and its own set of programming constructs. For instance the if-else statement with bash looks different that the one in the C-shell.
This page might be of interest as it "translates" between bash and tcsh commands/syntax.
Using the directive in the shell script allows you to run programs using a different shell. For instance I use the tcsh
shell interactively, but often run bash scripts using /bin/bash in the script file.
Aside:
This concept extends to other scripts too. For instance if you program in Python you'd put
#!/usr/bin/python
at the top of your Python program
How are you running the program?
It's not the java file that is being ran but rather the .class file that is created by compiling the java code. You will either need to specify the absolute path like user1420750 says or a relative path to your System.getProperty("user.dir")
directory. This should be the working directory or the directory you ran the java command from.
Assuming the following method to test:
public boolean doSomething(SomeClass arg);
Mockito documentation says that you should not use captor in this way:
when(someObject.doSomething(argumentCaptor.capture())).thenReturn(true);
assertThat(argumentCaptor.getValue(), equalTo(expected));
Because you can just use matcher during stubbing:
when(someObject.doSomething(eq(expected))).thenReturn(true);
But verification is a different story. If your test needs to ensure that this method was called with a specific argument, use ArgumentCaptor
and this is the case for which it is designed:
ArgumentCaptor<SomeClass> argumentCaptor = ArgumentCaptor.forClass(SomeClass.class);
verify(someObject).doSomething(argumentCaptor.capture());
assertThat(argumentCaptor.getValue(), equalTo(expected));
C# Cribs: I ended up with this super generic one liner. Hope this is useful to both the original poster and/or people who just typed the same question I did into Google:
SELECT TriggerRecord.name as TriggerName,ParentRecord.name as ForTableName
FROM sysobjects TriggerRecord
INNER JOIN sysobjects ParentRecord ON TriggerRecord.parent_obj=ParentRecord.id
WHERE TriggerRecord.xtype='TR'
Query Characteristics:
I strongly disagree with most answers previously mentioned.
Short answer:
Omit the "in" class and add it using jQuery to fade it in.
See this jsfiddle for an example that fades in alert after 3 seconds http://jsfiddle.net/QAz2U/3/
Long answer:
Although it is true bootstrap doesn't natively support fading in alerts, most answers here use the jQuery fade function, which uses JavaScript to animate (fade) the element. The big advantage of this is cross browser compatibility. The downside is performance (see also: jQuery to call CSS3 fade animation?).
Bootstrap uses CSS3 transitions, which have way better performance. Which is important for mobile devices:
Bootstraps CSS to fade the alert:
.fade {
opacity: 0;
-webkit-transition: opacity 0.15s linear;
-moz-transition: opacity 0.15s linear;
-o-transition: opacity 0.15s linear;
transition: opacity 0.15s linear;
}
.fade.in {
opacity: 1;
}
Why do I think this performance is so important? People using old browsers and hardware will potentially get a choppy transitions with jQuery.fade(). The same goes for old hardware with modern browsers. Using CSS3 transitions people using modern browsers will get a smooth animation even with older hardware, and people using older browsers that don't support CSS transitions will just instantly see the element pop in, which I think is a better user experience than choppy animations.
I came here looking for the same answer as the above: to fade in a bootstrap alert. After some digging in the code and CSS of Bootstrap the answer is rather straightforward. Don't add the "in" class to your alert. And add this using jQuery when you want to fade in your alert.
HTML (notice there is NO in class!)
<div id="myAlert" class="alert success fade" data-alert="alert">
<!-- rest of alert code goes here -->
</div>
Javascript:
function showAlert(){
$("#myAlert").addClass("in")
}
Calling the function above function adds the "in" class and fades in the alert using CSS3 transitions :-)
Also see this jsfiddle for an example using a timeout (thanks John Lehmann!): http://jsfiddle.net/QAz2U/3/
You can Use below code to call the web service and get response .Make sure that your Web Service return the response in Data Table Format..This code help you if you using data from SQL Server database .If you you using MYSQL you need to change one thing just replace word NewDataSet from sentence obj2=(SoapObject) obj1.getProperty("NewDataSet");
by DocumentElement
private static final String NAMESPACE = "http://tempuri.org/";
private static final String URL = "http://localhost/Web_Service.asmx?"; // you can use IP address instead of localhost
private static final String METHOD_NAME = "Function_Name";
private static final String SOAP_ACTION = NAMESPACE + METHOD_NAME;
SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME);
request.addProperty("parm_name", prm_value); // Parameter for Method
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
envelope.dotNet = true;
envelope.setOutputSoapObject(request);
HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);
try {
androidHttpTransport.call(SOAP_ACTION, envelope); //call the eb service Method
} catch (Exception e) {
e.printStackTrace();
} //Next task is to get Response and format that response
SoapObject obj, obj1, obj2, obj3;
obj = (SoapObject) envelope.getResponse();
obj1 = (SoapObject) obj.getProperty("diffgram");
obj2 = (SoapObject) obj1.getProperty("NewDataSet");
for (int i = 0; i < obj2.getPropertyCount(); i++) //the method getPropertyCount() return the number of rows
{
obj3 = (SoapObject) obj2.getProperty(i);
obj3.getProperty(0).toString(); //value of column 1
obj3.getProperty(1).toString(); //value of column 2
//like that you will get value from each column
}
If you have any problem regarding this you can write me..
Scrolling div on click of button.
Html Code:-
<div id="textBody" style="height:200px; width:600px; overflow:auto;">
<!------Your content---->
</div>
JQuery code for scrolling div:-
$(function() {
$( "#upBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()-20);
});
$( "#downBtn" ).click(function(){
$('#textBody').scrollTop($('#textBody').scrollTop()+20);;
});
});
Assuming you are talking about the ActionEvent
class, then there is a big difference between the two methods.
getActionCommand()
gives you a String representing the action command. The value is component specific; for a JButton
you have the option to set the value with setActionCommand(String command)
but for a JTextField
if you don't set this, it will automatically give you the value of the text field. According to the javadoc this is for compatability with java.awt.TextField
.
getSource()
is specified by the EventObject
class that ActionEvent
is a child of (via java.awt.AWTEvent
). This gives you a reference to the object that the event came from.
Edit:
Here is a example. There are two fields, one has an action command explicitly set, the other doesn't. Type some text into each then press enter.
public class Events implements ActionListener {
private static JFrame frame;
public static void main(String[] args) {
frame = new JFrame("JTextField events");
frame.getContentPane().setLayout(new FlowLayout());
JTextField field1 = new JTextField(10);
field1.addActionListener(new Events());
frame.getContentPane().add(new JLabel("Field with no action command set"));
frame.getContentPane().add(field1);
JTextField field2 = new JTextField(10);
field2.addActionListener(new Events());
field2.setActionCommand("my action command");
frame.getContentPane().add(new JLabel("Field with an action command set"));
frame.getContentPane().add(field2);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(220, 150);
frame.setResizable(false);
frame.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent evt) {
String cmd = evt.getActionCommand();
JOptionPane.showMessageDialog(frame, "Command: " + cmd);
}
}
After trying several solutions, this worked for me:
(^(\d{2})|^(\d{4})|^(\d{5}))$
This expression takes the number of length 2,4 and 5. Valid Inputs are 12 1234 12345
Use the location header flag:
curl -L <URL>
It's ES6 Spread_operator
and Destructuring_assignment
.
<div {...this.props}>
Content Here
</div>
It's equal to Class Component
const person = {
name: "xgqfrms",
age: 23,
country: "China"
};
class TestDemo extends React.Component {
render() {
const {name, age, country} = {...this.props};
// const {name, age, country} = this.props;
return (
<div>
<h3> Person Information: </h3>
<ul>
<li>name={name}</li>
<li>age={age}</li>
<li>country={country}</li>
</ul>
</div>
);
}
}
ReactDOM.render(
<TestDemo {...person}/>
, mountNode
);
or Function component
const props = {
name: "xgqfrms",
age: 23,
country: "China"
};
const Test = (props) => {
return(
<div
name={props.name}
age={props.age}
country={props.country}>
Content Here
<ul>
<li>name={props.name}</li>
<li>age={props.age}</li>
<li>country={props.country}</li>
</ul>
</div>
);
};
ReactDOM.render(
<div>
<Test {...props}/>
<hr/>
<Test
name={props.name}
age={props.age}
country={props.country}
/>
</div>
, mountNode
);
void do_something(int el, std::vector<int> **arr)
should be
void do_something(int el, std::vector<int>& arr)
{
arr.push_back(el);
}
Pass by reference has been simplified to use the &
in C++.
In some locales like Hebrew, there are leap months dependant upon the year so to avoid errors in such locales you might consider the following solution:
SELECT DATENAME(month, STR(YEAR(GETDATE()), 4) + REPLACE(STR(@month, 2), ' ', '0') + '01')
I fixed this issue, this way:
In addition to all other answers, there's an important difference for IE8: If you use display:none
and try to get the element's width or height, IE8 returns 0 (while other browsers will return the actual sizes). IE8 returns correct width or height only for visibility:hidden
.
i have used this and solved my
-webkit-appearance:none;
uniqueId is custom attribute.
<a {...{ "uniqueId": `${item.File.UniqueId}` }} href={item.File.ServerRelativeUrl} target='_blank'>{item.File.Name}</a>
I recommend you start reading the documentation (4.6.18. Formatting cells). When applying a lot of formatting it's better to use applyFromArray()
According to the documentation this method is also suppose to be faster when you're setting many style properties. There's an annex where you can find all the possible keys for this function.
This will work for you:
$phpExcel = new PHPExcel();
$styleArray = array(
'font' => array(
'bold' => true,
'color' => array('rgb' => 'FF0000'),
'size' => 15,
'name' => 'Verdana'
));
$phpExcel->getActiveSheet()->getCell('A1')->setValue('Some text');
$phpExcel->getActiveSheet()->getStyle('A1')->applyFromArray($styleArray);
To apply font style to complete excel document:
$styleArray = array(
'font' => array(
'bold' => true,
'color' => array('rgb' => 'FF0000'),
'size' => 15,
'name' => 'Verdana'
));
$phpExcel->getDefaultStyle()
->applyFromArray($styleArray);
The most common reason could be the database connection string. You have to change the connection string attachDBFile=|DataDirectory|file_name.mdf. there might be problem in host name which would be (local),localhost or .\sqlexpress.
I had the same "TypeError: an integer is required" error message when attempting to write. Thanks, the .encode() solved it for me. I'm running python 3.4 on a Dell D530 running 32 bit Windows XP Pro.
I'm omitting the com port settings here:
>>>import serial
>>>ser = serial.Serial(5)
>>>ser.close()
>>>ser.open()
>>>ser.write("1".encode())
1
>>>
i believe the following code will only run after form1
is closed
while (true)
{
if (form1.Visible == false)
form2.Show();
}
Why not start your form2
from form1
instead?
Form2 form2 = new Form2();
private void button1_Click_1(object sender, EventArgs e)
{
if (richTextBox1.Text != null)
{
form1.Visible=false;
form2.Show();
}
else MessageBox.Show("Insert Attributes First !");
}
You can try this as well
df.drop_duplicates(subset='A', keep='last')
I referred this from https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.drop_duplicates.html
I had that problem, if you are calling your REST Methods from another Assembly you must be sure that all your references have the same version as your main project references, otherwise will never find your controllers.
Regards.
import cx_Oracle
dsn_tns = cx_Oracle.makedsn('host', 'port', service_name='give service name')
conn = cx_Oracle.connect(user='username', password='password', dsn=dsn_tns)
c = conn.cursor()
c.execute('select count(*) from schema.table_name')
for row in c:
print row
conn.close()
Note :
In (dsn_tns) if needed, place an 'r' before any parameter in order to address any special character such as '\'.
In (conn) if needed, place an 'r' before any parameter in order to address any special character such as '\'. For example, if your user name contains '\', you'll need to place 'r' before the user name: user=r'User Name' or password=r'password'
use triple quotes if you want to spread your query across multiple lines.
This worked for me:
string connection = System.Configuration.ConfigurationManager.ConnectionStrings["Test"].ConnectionString;
Outputs:
Data Source=.;Initial Catalog=OmidPayamak;IntegratedSecurity=True"
I can change the rows by following the accepted answer and associated example on jsFiddle. But due to some unknown reasons, I couldn't get the ids after "stop or change" actions. But the example posted in the JQuery UI page works fine for me. You can check that link here.
Starting from Java 8 you can use Stream
:
List<String> sorted = Arrays.asList(
names.stream().sorted(
(s1, s2) -> s1.compareToIgnoreCase(s2)
).toArray(String[]::new)
);
It gets a stream from that ArrayList
, then it sorts it (ignoring the case). After that, the stream is converted to an array which is converted to an ArrayList
.
If you print the result using:
System.out.println(sorted);
you get the following output:
[ananya, Athira, bala, jeena, Karthika, Neethu, Nithin, seetha, sudhin, Swetha, Tony, Vinod]
java.lang.StringBuilder. Use int constructor to create an initial size.