In the following sample code, I wrote an simple way to output top words in an word_map map where key is string (word) and value is unsigned int (word occurrence).

The idea is simple, find the current top word and delete it from the map. It's not optimized, but it works well when the map is not large and we only need to output the top N words, instead of sorting the whole map.

const int NUMBER_OF_TOP_WORDS = 300;
for (int i = 1; i <= NUMBER_OF_TOP_WORDS; i++) {
  if (word_map.empty())
    break;
  // Go through the map and find the max item.
  int max_value = 0;
  string max_word = "";
  for (const auto& kv : word_map) {
    if (kv.second > max_value) {
      max_value = kv.second;
      max_word = kv.first;
    }
  }
  // Erase this entry and print.
  word_map.erase(max_word);
  cout << "Top:" << i << " Count:" << max_value << " Word:<" << max_word << ">" <<     endl;
}

• using: You are going to use it.
• namespace: To use what? A namespace.
• std: The std namespace (where features of the C++ Standard Library, such as string or vector, are declared).

After you write this instruction, if the compiler sees string it will know that you may be referring to std::string, and if it sees vector, it will know that you may be referring to std::vector. (Provided that you have included in your compilation unit the header files where they are defined, of course.)

If you don't write it, when the compiler sees string or vector it will not know what you are refering to. You will need to explicitly tell it std::string or std::vector, and if you don't, you will get a compile error.

Check this answer for C++11. Basically, if you pass an lvalue the rvalue reference

From this article:

void f1(String s) {
    vector<String> v;
    v.push_back(std::move(s));
}
void f2(const String &s) {
    vector<String> v;
    v.push_back(s);
}

"For lvalue argument, ‘f1’ has one extra copy to pass the argument because it is by-value, while ‘f2’ has one extra copy to call push_back. So no difference; for rvalue argument, the compiler has to create a temporary ‘String(L“”)’ and pass the temporary to ‘f1’ or ‘f2’ anyway. Because ‘f2’ can take advantage of move ctor when the argument is a temporary (which is an rvalue), the costs to pass the argument are the same now for ‘f1’ and ‘f2’."

Continuing: " This means in C++11 we can get better performance by using pass-by-value approach when:

1. The parameter type supports move semantics - All standard library components do in C++11
2. The cost of move constructor is much cheaper than the copy constructor (both the time and stack usage).
3. Inside the function, the parameter type will be passed to another function or operation which supports both copy and move.
4. It is common to pass a temporary as the argument - You can organize you code to do this more.

"

OTOH, for C++98 it is best to pass by reference - less data gets copied around. Passing const or non const depend of whether you need to change the argument or not.

Its boils down to this: math.h is from C and was created over 10 years ago. In math.h, due to its primitive nature, the abs() function is "essentially" just for integer types and if you wanted to get the absolute value of a double, you had to use fabs(). When C++ was created it took math.h and made it cmath. cmath is essentially math.h but improved for C++. It improved things like having to distinguish between fabs() and abs, and just made abs() for both doubles and integer types. In summary either: Use math.h and use abs() for integers, fabs() for doubles or use cmath and just have abs for everything (easier and recommended)

Hope this helps anyone who is having the same problem!

From cppreference, one of the std::unique_ptr constructors is

explicit unique_ptr( pointer p ) noexcept;

So to create a new std::unique_ptr is to pass a pointer to its constructor.

unique_ptr<int> uptr (new int(3));

Or it is the same as

int *int_ptr = new int(3);
std::unique_ptr<int> uptr (int_ptr);

The different is you don't have to clean up after using it. If you don't use std::unique_ptr (smart pointer), you will have to delete it like this

delete int_ptr;

when you no longer need it or it will cause a memory leak.

1. If your container only contains unique values, consider using std::set instead. It allows querying of set membership with logarithmic complexity.

    std::set<std::string> s;
    s.insert("abc");
    s.insert("xyz");
    if (s.find("abc") != s.end()) { ...
   

2. If your vector is kept sorted, use std::binary_search, it offers logarithmic complexity as well.

3. If all else fails, fall back to std::find, which is a simple linear search.

If the only file you include is iostream and it still says undefined, then maybe iostream doesn't contain what it's supposed to. Is it possible that you have an empty file coincidentally named "iostream" in your project?

I had a similar issue and it turned out that i had to add an extra entry in cmake to include the files.

Since i was also using the zmq library I had to add this to the included libraries as well.

Nouns.h doesn't include <string>, but it needs to. You need to add

#include <string>

at the top of that file, otherwise the compiler doesn't know what std::string is when it is encountered for the first time.

#include<algorithm>
#include<vector>
#include<iostream>
using namespace std;
int main()
{
    vector<int>v1;
    for(int i=0; i<5; i++)
        v1.push_back(i*2);
    for(int i=0; i<v1.size(); i++)
        cout<<v1[i];    //02468
    reverse(v1.begin(),v1.end());
    
    for(int i=0; i<v1.size(); i++)
        cout<<v1[i];   //86420
}

You have to define the compare first. There are 3 ways to do that:

1. use class
2. use struct (which is same as class)
3. use lambda function.

It's easy to use class/struct because easy to declare just write this line of code above your executing code

struct compare{
  public:
  bool operator()(Node& a,Node& b) // overloading both operators 
  {
      return a.w < b.w: // if you want increasing order;(i.e increasing for minPQ)
      return a.w > b.w // if you want reverse of default order;(i.e decreasing for minPQ)
   }
};

Calling code:

priority_queue<Node,vector<Node>,compare> pq;

The std::system_error example above is slightly incorrect. std::system_category() will map the error codes from system's native error code facility. For *nix, this is errno. For Win32, it is GetLastError(). ie, on Windows, the above example will print

failed to open C:\path\to\forbidden: The data is invalid

because EACCES is 13 which is the Win32 error code ERROR_INVALID_DATA

To fix it, either use the system's native error code facility, eg on Win32

throw new std::system_error(GetLastError(), std::system_category(), "failed to open"+ filename);

Or use errno and std::generic_category(), eg

throw new std::system_error(errno, std::generic_category(), "failed to open"+ filename);

Self-explanatory code follows which first creates a std::tm corresponding to 10-10-2012 12:38:40, converts that to a std::chrono::system_clock::time_point, adds 0.123456 seconds, and then prints that out by converting back to a std::tm. How to handle the fractional seconds is in the very last step.

#include <iostream>
#include <chrono>
#include <ctime>

int main()
{
    // Create 10-10-2012 12:38:40 UTC as a std::tm
    std::tm tm = {0};
    tm.tm_sec = 40;
    tm.tm_min = 38;
    tm.tm_hour = 12;
    tm.tm_mday = 10;
    tm.tm_mon = 9;
    tm.tm_year = 112;
    tm.tm_isdst = -1;
    // Convert std::tm to std::time_t (popular extension)
    std::time_t tt = timegm(&tm);
    // Convert std::time_t to std::chrono::system_clock::time_point
    std::chrono::system_clock::time_point tp = 
                                     std::chrono::system_clock::from_time_t(tt);
    // Add 0.123456 seconds
    // This will not compile if std::chrono::system_clock::time_point has
    //   courser resolution than microseconds
    tp += std::chrono::microseconds(123456);
    
    // Now output tp

    // Convert std::chrono::system_clock::time_point to std::time_t
    tt = std::chrono::system_clock::to_time_t(tp);
    // Convert std::time_t to std::tm (popular extension)
    tm = std::tm{0};
    gmtime_r(&tt, &tm);
    // Output month
    std::cout << tm.tm_mon + 1 << '-';
    // Output day
    std::cout << tm.tm_mday << '-';
    // Output year
    std::cout << tm.tm_year+1900 << ' ';
    // Output hour
    if (tm.tm_hour <= 9)
        std::cout << '0';
    std::cout << tm.tm_hour << ':';
    // Output minute
    if (tm.tm_min <= 9)
        std::cout << '0';
    std::cout << tm.tm_min << ':';
    // Output seconds with fraction
    //   This is the heart of the question/answer.
    //   First create a double-based second
    std::chrono::duration<double> sec = tp - 
                                    std::chrono::system_clock::from_time_t(tt) +
                                    std::chrono::seconds(tm.tm_sec);
    //   Then print out that double using whatever format you prefer.
    if (sec.count() < 10)
        std::cout << '0';
    std::cout << std::fixed << sec.count() << '\n';
}

For me this outputs:

10-10-2012 12:38:40.123456

Your std::chrono::system_clock::time_point may or may not be precise enough to hold microseconds.

Update

An easier way is to just use this date library. The code simplifies down to (using C++14 duration literals):

#include "date.h"
#include <iostream>
#include <type_traits>

int
main()
{
    using namespace date;
    using namespace std::chrono;
    auto t = sys_days{10_d/10/2012} + 12h + 38min + 40s + 123456us;
    static_assert(std::is_same<decltype(t),
                               time_point<system_clock, microseconds>>{}, "");
    std::cout << t << '\n';
}

which outputs:

2012-10-10 12:38:40.123456

You can skip the static_assert if you don't need to prove that the type of t is a std::chrono::time_point.

If the output isn't to your liking, for example you would really like dd-mm-yyyy ordering, you could:

#include "date.h"
#include <iomanip>
#include <iostream>

int
main()
{
    using namespace date;
    using namespace std::chrono;
    using namespace std;
    auto t = sys_days{10_d/10/2012} + 12h + 38min + 40s + 123456us;
    auto dp = floor<days>(t);
    auto time = make_time(t-dp);
    auto ymd = year_month_day{dp};
    cout.fill('0');
    cout << ymd.day() << '-' << setw(2) << static_cast<unsigned>(ymd.month())
         << '-' << ymd.year() << ' ' << time << '\n';
}

which gives exactly the requested output:

10-10-2012 12:38:40.123456

Update

Here is how to neatly format the current time UTC with milliseconds precision:

#include "date.h"
#include <iostream>

int
main()
{
    using namespace std::chrono;
    std::cout << date::format("%F %T\n", time_point_cast<milliseconds>(system_clock::now()));
}

which just output for me:

2016-10-17 16:36:02.975

C++17 will allow you to replace time_point_cast<milliseconds> with floor<milliseconds>. Until then date::floor is available in "date.h".

std::cout << date::format("%F %T\n", date::floor<milliseconds>(system_clock::now()));

Update C++20

In C++20 this is now simply:

#include <chrono>
#include <iostream>

int
main()
{
    using namespace std::chrono;
    auto t = sys_days{10d/10/2012} + 12h + 38min + 40s + 123456us;
    std::cout << t << '\n';
}

Or just:

std::cout << std::chrono::system_clock::now() << '\n';

std::format will be available to customize the output.

I believe this would work. It takes const char*'s as a parameter.

//params find and replace cannot be NULL
void FindAndReplace( std::string& source, const char* find, const char* replace )
{
   //ASSERT(find != NULL);
   //ASSERT(replace != NULL);
   size_t findLen = strlen(find);
   size_t replaceLen = strlen(replace);
   size_t pos = 0;

   //search for the next occurrence of find within source
   while ((pos = source.find(find, pos)) != std::string::npos)
   {
      //replace the found string with the replacement
      source.replace( pos, findLen, replace );

      //the next line keeps you from searching your replace string, 
      //so your could replace "hello" with "hello world" 
      //and not have it blow chunks.
      pos += replaceLen; 
   }
}

You cannot cast an int to a char* to get a string. Try this:

std::ostringstream sstream;
sstream << "select logged from login where id = " << ClientID;
std::string query = sstream.str();

stringstream reference

Just to warn, that in case of a deque container, all solutions that check for the deque iterator equality to numbers.end() will likely fail on gcc 4.8.4. Namely, erasing an element of the deque generally invalidates pointer to numbers.end():

#include <iostream>
#include <deque>

using namespace std;
int main() 
{

  deque<int> numbers;

  numbers.push_back(0);
  numbers.push_back(1);
  numbers.push_back(2);
  numbers.push_back(3);
  //numbers.push_back(4);

  deque<int>::iterator  it_end = numbers.end();

  for (deque<int>::iterator it = numbers.begin(); it != numbers.end(); ) {
    if (*it % 2 == 0) {
      cout << "Erasing element: " << *it << "\n";
      numbers.erase(it++);
      if (it_end == numbers.end()) {
    cout << "it_end is still pointing to numbers.end()\n";
      } else {
    cout << "it_end is not anymore pointing to numbers.end()\n";
      }
    }
    else {
      cout << "Skipping element: " << *it << "\n";
      ++it;
    }
  }
}

Output:

Erasing element: 0
it_end is still pointing to numbers.end()
Skipping element: 1
Erasing element: 2
it_end is not anymore pointing to numbers.end()

Note that while the deque transformation is correct in this particular case, the end pointer has been invalidated along the way. With the deque of a different size the error is more apparent:

int main() 
{

  deque<int> numbers;

  numbers.push_back(0);
  numbers.push_back(1);
  numbers.push_back(2);
  numbers.push_back(3);
  numbers.push_back(4);

  deque<int>::iterator  it_end = numbers.end();

  for (deque<int>::iterator it = numbers.begin(); it != numbers.end(); ) {
    if (*it % 2 == 0) {
      cout << "Erasing element: " << *it << "\n";
      numbers.erase(it++);
      if (it_end == numbers.end()) {
    cout << "it_end is still pointing to numbers.end()\n";
      } else {
    cout << "it_end is not anymore pointing to numbers.end()\n";
      }
    }
    else {
      cout << "Skipping element: " << *it << "\n";
      ++it;
    }
  }
}

Output:

Erasing element: 0
it_end is still pointing to numbers.end()
Skipping element: 1
Erasing element: 2
it_end is still pointing to numbers.end()
Skipping element: 3
Erasing element: 4
it_end is not anymore pointing to numbers.end()
Erasing element: 0
it_end is not anymore pointing to numbers.end()
Erasing element: 0
it_end is not anymore pointing to numbers.end()
...
Segmentation fault (core dumped)

Here is one of the ways to fix this:

#include <iostream>
#include <deque>

using namespace std;
int main() 
{

  deque<int> numbers;
  bool done_iterating = false;

  numbers.push_back(0);
  numbers.push_back(1);
  numbers.push_back(2);
  numbers.push_back(3);
  numbers.push_back(4);

  if (!numbers.empty()) {
    deque<int>::iterator it = numbers.begin();
    while (!done_iterating) {
      if (it + 1 == numbers.end()) {
    done_iterating = true;
      } 
      if (*it % 2 == 0) {
    cout << "Erasing element: " << *it << "\n";
      numbers.erase(it++);
      }
      else {
    cout << "Skipping element: " << *it << "\n";
    ++it;
      }
    }
  }
}

Have you considered using stringstreams?

#include <string>
#include <sstream>

std::ostringstream oss;
oss << "sometext" << somevar << "sometext" << somevar;
std::string var = oss.str();

It's compiling because printf isn't type safe, since it uses variable arguments in the C sense¹. printf has no option for std::string, only a C-style string. Using something else in place of what it expects definitely won't give you the results you want. It's actually undefined behaviour, so anything at all could happen.

The easiest way to fix this, since you're using C++, is printing it normally with std::cout, since std::string supports that through operator overloading:

std::cout << "Follow this command: " << myString;

If, for some reason, you need to extract the C-style string, you can use the c_str() method of std::string to get a const char * that is null-terminated. Using your example:

#include <iostream>
#include <string>
#include <stdio.h>

int main()
{
    using namespace std;

    string myString = "Press ENTER to quit program!";
    cout << "Come up and C++ me some time." << endl;
    printf("Follow this command: %s", myString.c_str()); //note the use of c_str
    cin.get();

    return 0;
}

If you want a function that is like printf, but type safe, look into variadic templates (C++11, supported on all major compilers as of MSVC12). You can find an example of one here. There's nothing I know of implemented like that in the standard library, but there might be in Boost, specifically boost::format.

[1]: This means that you can pass any number of arguments, but the function relies on you to tell it the number and types of those arguments. In the case of printf, that means a string with encoded type information like %d meaning int. If you lie about the type or number, the function has no standard way of knowing, although some compilers have the ability to check and give warnings when you lie.

string does not name a type. The class in the string header is called std::string.

Please do not put using namespace std in a header file, it pollutes the global namespace for all users of that header. See also "Why is 'using namespace std;' considered a bad practice in C++?"

Your class should look like this:

#include <string>

class Game
{
    private:
        std::string white;
        std::string black;
        std::string title;
    public:
        Game(std::istream&, std::ostream&);
        void display(colour, short);
};

Seeing from your G++ version, you need to update it badly. C++11 has only been available since G++ 4.3. The most recent version is 4.7.

In versions pre-G++ 4.7, you'll have to use -std=c++0x, for more recent versions you can use -std=c++11.

You can use std::find from <algorithm>:

#include <vector>
vector<int> vec; 
//can have other data types instead of int but must same datatype as item 
std::find(vec.begin(), vec.end(), item) != vec.end()

This returns a bool (true if present, false otherwise). With your example:

#include <algorithm>
#include <vector>

if ( std::find(vec.begin(), vec.end(), item) != vec.end() )
   do_this();
else
   do_that();

In c++11 you can use:

for ( auto iter : table ) {
     key=iter->first;
     value=iter->second;
}

You can write

std::list<item*>::iterator i = items.begin();
while (i != items.end())
{
    bool isActive = (*i)->update();
    if (!isActive) {
        i = items.erase(i); 
    } else {
        other_code_involving(*i);
        i++;
    }
}

You can write equivalent code with std::list::remove_if, which is less verbose and more explicit

items.remove_if([] (item*i) {
    bool isActive = (*i)->update();
    if (!isActive) 
        return true;

    other_code_involving(*i);
    return false;
});

The std::vector::erase std::remove_if idiom should be used when items is a vector instead of a list to keep compexity at O(n) - or in case you write generic code and items might be a container with no effective way to erase single items (like a vector)

items.erase(std::remove_if(begin(items), end(items), [] (item*i) {
    bool isActive = (*i)->update();
    if (!isActive) 
        return true;

    other_code_involving(*i);
    return false;
}));

With C++11 you can use std::regex like so:

#include <regex>
...
std::string string("hello $name");
string = std::regex_replace(string, std::regex("\\$name"), "Somename");

The double backslash is required for escaping an escape character.

I got this, the only way I found to fix this was to update all of mingw-64 (I did this using pacman on msys2 for your information).

Do not use it globally

It is considered "bad" only when used globally. Because:

• You clutter the namespace you are programming in.
• Readers will have difficulty seeing where a particular identifier comes from, when you use many using namespace xyz.
• Whatever is true for other readers of your source code is even more true for the most frequent reader of it: yourself. Come back in a year or two and take a look...
• If you only talk about using namespace std you might not be aware of all the stuff you grab -- and when you add another #include or move to a new C++ revision you might get name conflicts you were not aware of.

You may use it locally

Go ahead and use it locally (almost) freely. This, of course, prevents you from repetition of std:: -- and repetition is also bad.

An idiom for using it locally

In C++03 there was an idiom -- boilerplate code -- for implementing a swap function for your classes. It was suggested that you actually use a local using namespace std -- or at least using std::swap:

class Thing {
    int    value_;
    Child  child_;
public:
    // ...
    friend void swap(Thing &a, Thing &b);
};
void swap(Thing &a, Thing &b) {
    using namespace std;      // make `std::swap` available
    // swap all members
    swap(a.value_, b.value_); // `std::stwap(int, int)`
    swap(a.child_, b.child_); // `swap(Child&,Child&)` or `std::swap(...)`
}

This does the following magic:

• The compiler will choose the std::swap for value_, i.e. void std::swap(int, int).
• If you have an overload void swap(Child&, Child&) implemented the compiler will choose it.
• If you do not have that overload the compiler will use void std::swap(Child&,Child&) and try its best swapping these.

With C++11 there is no reason to use this pattern any more. The implementation of std::swap was changed to find a potential overload and choose it.

Inside of any Activity class you create a method that will assign NULL to thread instance which can be used as an alternative to the depreciated stop() method for stopping thread execution:

public class MyActivity extends Activity {

private Thread mThread;  

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);


        mThread =  new Thread(){
        @Override
        public void run(){
            // Perform thread commands...
    for (int i=0; i < 5000; i++)
    {
      // do something...
    }

    // Call the stopThread() method.
            stopThread(this);
          }
        };

    // Start the thread.
        mThread.start(); 
}

private synchronized void stopThread(Thread theThread)
{
    if (theThread != null)
    {
        theThread = null;
    }
}
}

This works for me without a problem.

CSS file

.selectDD {
 overflow: hidden;
 white-space: nowrap;
 text-overflow: ellipsis;     
}

JS file

$(document).ready(function () {
    $("#selectDropdownID").next().children().eq(0).addClass("selectDD");
});

Using jQuery's .is( ":focus" )

$(".status").on("click","textarea",function(){
        if ($(this).is( ":focus" )) {
            // fire this step
        }else{
                    $(this).focus();
            // fire this step
    }

#3 ways to make center child div in a parent div

• Absolute Positioning Method
• Flexbox Method

• Transform/Translate Method

  

  Demo

/* 1st way */_x000D_
.parent1 {_x000D_
  background: darkcyan;_x000D_
   width: 200px;_x000D_
   height: 200px;_x000D_
   position: relative;_x000D_
}_x000D_
.child1 {_x000D_
  background: white;_x000D_
  height: 30px;_x000D_
  width: 30px;_x000D_
  position: absolute;_x000D_
  top: 50%;_x000D_
  left: 50%;_x000D_
  margin: -15px;_x000D_
}_x000D_
_x000D_
/* 2nd way */_x000D_
.parent2 {_x000D_
  display: flex;_x000D_
  justify-content: center;_x000D_
  align-items: center;_x000D_
  background: darkcyan;_x000D_
  height: 200px;_x000D_
  width: 200px;_x000D_
}_x000D_
.child2 {_x000D_
  background: white;_x000D_
  height: 30px;_x000D_
  width: 30px;_x000D_
}_x000D_
_x000D_
/* 3rd way */_x000D_
.parent3 {_x000D_
  position: relative;_x000D_
  height: 200px;_x000D_
  width: 200px;_x000D_
  background: darkcyan;_x000D_
}_x000D_
.child3 {_x000D_
  background: white;_x000D_
  height: 30px;_x000D_
  width: 30px;_x000D_
  position: absolute;_x000D_
  top: 50%;_x000D_
  left: 50%;_x000D_
  transform: translate(-50%, -50%);_x000D_
}

<div class="parent1">_x000D_
  <div class="child1"></div>_x000D_
</div>_x000D_
<hr />_x000D_
_x000D_
<div class="parent2">_x000D_
  <div class="child2"></div>_x000D_
</div>_x000D_
<hr />_x000D_
_x000D_
<div class="parent3">_x000D_
  <div class="child3"></div>_x000D_
</div>

This happened to me yesterday and in my case was because I was following a PDF manual to develop some module to communicate with an API and while copying the link directly from the manual, for some odd reason, the hyphen from the copied link was in a different encoding and hence the curl_exec() was always returning false because it was unable to communicate with the server.

It took me a couple hours to finally understand the diference in the characters bellow:

https://www.e-example.com/api
https://www.e-example.com/api

Every time I tried to access the link directly from a browser it converted to something likehttps://www.xn--eexample-0m3d.com/api.

It may seem to you that they are equal but if you check the encoding of the hyphens here you'll see that the first hyphen is a unicode characters U+2010 and the other is a U+002D.

Hope this helps someone.

div will not expand if it has other floating divs inside, so remove the float from the internal divs and it will expand.

Getting the Text of ComboBox when the item is changed

     self.ui.comboBox.activated.connect(self.pass_Net_Adap)

  def pass_Net_Adap(self):
      print str(self.ui.comboBox.currentText())

BComp.exe works in multiple-tabbed scenario as well, so there is no need to add /solo unless you really want separate windows for each file comparison. Tested/verified on Beyond Compare 3 and 4. Moral: use BComp.exe, not BCompare.exe, for VS external compare tool configuration.

A clean solution could be create a generic class to handle the list, so you don't need to create a different class each time you need it.

public class ListModel<T>
{
    public List<T> Items { get; set; }

    public ListModel(List<T> list) {
        Items = list;
    }
}

and when you return the View you just need to simply do:

List<customClass> ListOfCustomClass = new List<customClass>();
//Do as needed...
return View(new ListModel<customClass>(ListOfCustomClass));

then define the list in the model:

@model ListModel<customClass>

and ready to go:

@foreach(var element in Model.Items) {
  //do as needed...
}

Perhaps what you're looking for is the SVG element's pointer-events property, which you can read about at the SVG w3C working group docs.

You can use CSS to set what happens to the SVG element when it is clicked, etc.

If you happen to be using OpenID for authentication, Simple Registration Extension would solve the problem for authenticated users (You'll need to convert from tz to numeric).

Another option would be to infer the time zone from the user agent's country preference. This is a somewhat crude method (won't work for en-US), but makes a good approximation.

You can use :+ to append element to array and +: to prepend it:

0 +: array :+ 4

should produce:

res3: Array[Int] = Array(0, 1, 2, 3, 4)

It's the same as with any other implementation of Seq.

Use command:

git tag v1.0 ec32d32

Where v1.0 is the tag name and ec32d32 is the commit you want to tag

Once done you can push the tags by:

git push origin --tags

Reference:

Git (revision control): How can I tag a specific previous commit point in GitHub?

Small And Best One

#test{
width: 202px;
}
<select id="test" size="1" name="mrraja">

Try this jquery helper function/file

jquery.Rating.js

//ES5
$.fn.stars = function() {
    return $(this).each(function() {
        var rating = $(this).data("rating");
        var fullStar = new Array(Math.floor(rating + 1)).join('<i class="fas fa-star"></i>');
        var halfStar = ((rating%1) !== 0) ? '<i class="fas fa-star-half-alt"></i>': '';
        var noStar = new Array(Math.floor($(this).data("numStars") + 1 - rating)).join('<i class="far fa-star"></i>');
        $(this).html(fullStar + halfStar + noStar);
    });
}

//ES6
$.fn.stars = function() {
    return $(this).each(function() {
        const rating = $(this).data("rating");
        const numStars = $(this).data("numStars");
        const fullStar = '<i class="fas fa-star"></i>'.repeat(Math.floor(rating));
        const halfStar = (rating%1!== 0) ? '<i class="fas fa-star-half-alt"></i>': '';
        const noStar = '<i class="far fa-star"></i>'.repeat(Math.floor(numStars-rating));
        $(this).html(`${fullStar}${halfStar}${noStar}`);
    });
}

index.html

   <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Star Rating</title>
        <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/css/all.min.css" rel="stylesheet">
        <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
        <script src="js/jquery.Rating.js"></script>
        <script>
            $(function(){
                $('.stars').stars();
            });
        </script>
    </head>
    <body>

        <span class="stars" data-rating="3.5" data-num-stars="5" ></span>

    </body>
    </html>

Android studio now supports vectors pre-lollipop. No PNG conversion. You can still change your fill color and it will work.

In you ImageView, use

 app:srcCompat="@drawable/ic_more_vert_24dp"

In your gradle file,

 // Gradle Plugin 2.0+  
 android {  
   defaultConfig {  
     vectorDrawables.useSupportLibrary = true  
   }  
 }  

 compile 'com.android.support:design:23.4.0'

Use this layout. If you want to animate the main view shrinking you'll need to add animation to the height of the hidden bar, buy it may be good enough to use the translate animation on the bar, and have the main view height jump instead of animate.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<RelativeLayout
    android:id="@+id/main_screen"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:text="@string/hello_world" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="@string/hello_world" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:onClick="slideUpDown"
        android:text="Slide up / down" />
</RelativeLayout>

<RelativeLayout
    android:id="@+id/hidden_panel"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom"
    android:background="#fcc"
    android:visibility="visible" >

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/app_name" />
</RelativeLayout>

</LinearLayout>

In addition to the solution with 'aaaaaaaa' LIKE '%' || tag_name || '%' there are position (reversed order of args) and strpos.

SELECT id FROM TAG_TABLE WHERE strpos('aaaaaaaa', tag_name) > 0

Besides what is more efficient (LIKE looks less efficient, but an index might change things), there is a very minor issue with LIKE: tag_name of course should not contain % and especially _ (single char wildcard), to give no false positives.

Starting simple, with no HTML:

foreach($database as $file) {
    echo $file['filename'] . ' at ' . $file['filepath'];
}

And you can otherwise manipulate the fields in the foreach.

ActiveX resolved in Chrome!
Hello all this is not the solution but the successful workaround and I have implemented as well.
This required some implementation on client machine as well that why is most suitable for intranet environment and not recommended for public sites. Even though one can implement it for public sites as well the only problem is end user has to download/implement solution.
Lets understand the key problem
Chrome cannot communicate with ActiceX
Solution: Since Chorme cannot communicate with ActiveX but still it can communicate with the API hosted on the client machine. So develop API using .Net MVC or any other technology so that through Ajax call it can communicate with the API and API communicate with the ActiveX object situated on the client machine. Since API also resides in Client machine that why there is no problem in communication. This API works as mediator between Chrome browser and ActiveX.
During API implementation you might encounter CORS issues, Use JSONP to deal with it.
Pictorial view of the solution

Other solution : Use URI Scheme like MailTo: or MS-Word to deal with outlook and word application. If your requirement is different then you can implement your customized URI Scheme.

anytime you run into this type of thing you should always think of your transaction log. The alter db statment with rollback immediate indicates this to be the case. Check this out: http://msdn.microsoft.com/en-us/library/ms189085.aspx

Bone up on checkpoints, etc. You need to decide if the transactions in your log are worth saving or not and then pick the mode to run your db in accordingly. There's really no reason for you to have to wait but also no reason for you to lose data either - you can have both.

Return string from function

#include <stdio.h>

const char* greet() {
  return "Hello";
}

int main(void) {
  printf("%s", greet());
}

You are most likely pushing a string 'NULL' to the table, rather then an actual NULL, but other things may be going on as well, an illustration:

mysql> CREATE TABLE date_test (pdd DATE NOT NULL);
Query OK, 0 rows affected (0.11 sec)

mysql> INSERT INTO date_test VALUES (NULL);
ERROR 1048 (23000): Column 'pdd' cannot be null
mysql> INSERT INTO date_test VALUES ('NULL');
Query OK, 1 row affected, 1 warning (0.05 sec)

mysql> show warnings;
+---------+------+------------------------------------------+
| Level   | Code | Message                                  |
+---------+------+------------------------------------------+
| Warning | 1265 | Data truncated for column 'pdd' at row 1 |
+---------+------+------------------------------------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM date_test;
+------------+
| pdd        |
+------------+
| 0000-00-00 |
+------------+
1 row in set (0.00 sec)

mysql> ALTER TABLE date_test MODIFY COLUMN pdd DATE NULL;
Query OK, 1 row affected (0.15 sec)
Records: 1  Duplicates: 0  Warnings: 0

mysql> INSERT INTO date_test VALUES (NULL);
Query OK, 1 row affected (0.06 sec)

mysql> SELECT * FROM date_test;
+------------+
| pdd        |
+------------+
| 0000-00-00 |
| NULL       |
+------------+
2 rows in set (0.00 sec)

To list all local groups which have users assigned to them, use this command:

cut -d: -f1 /etc/group | sort

For more info- > Unix groups, Cut command, sort command

Ok, this is best solution for me. Bootstrap includes mobile-first fluid grid system that appropriately scales up to 12 columns as the device or viewport size increases. So this worked perfectly on every browser and device:

        <div class="row">
            <div class="col-lg-4"></div>
            <div class="col-lg-4">
                <div class="input-group">
                    <input type="text" class="form-control" /> 
                    <span class="input-group-btn">
                        <button class="btn btn-default" type="button">Go!</button>
                    </span>
                </div><!-- /input-group -->
            </div><!-- /.col-lg-4 -->
            <div class="col-lg-4"></div>
        </div><!-- /.row -->

It means 4 + 4 + 4 =12... so second div will be in the middle that way.

Example: http://jsfiddle.net/jpGwm/embedded/result/

Just to add to other comments - it would be worth while to disable scrolling up whilst at the top of the page. If the user accidentally scrolls up whilst already at the top they would have to scroll down twice to start

if(scrolled != 0){
  $("#upClick").on("click" ,function(){
     scrolled=scrolled-300;
        $(".cover").animate({
          scrollTop:  scrolled
     });
  });
}

Another way to change color of a button if you want to do multiple operations along with color change. Using the Tk().after method and binding a change method allows you to change color and do other operations.

Label.destroy is another example of the after method.

    def export_win():
        //Some Operation
        orig_color = export_finding_graph.cget("background")
        export_finding_graph.configure(background = "green")

        tt = "Exported"
        label = Label(tab1_closed_observations, text=tt, font=("Helvetica", 12))
        label.grid(row=0,column=0,padx=10,pady=5,columnspan=3)

        def change(orig_color):
            export_finding_graph.configure(background = orig_color)

        tab1_closed_observations.after(1000, lambda: change(orig_color))
        tab1_closed_observations.after(500, label.destroy)


    export_finding_graph = Button(tab1_closed_observations, text='Export', command=export_win)
    export_finding_graph.grid(row=6,column=4,padx=70,pady=20,sticky='we',columnspan=3)

You can also revert to the original color.

One easy way to map that country name that you have to an int to be used in the setImageResource method is:

int id = getResources().getIdentifier(lowerCountryCode, "drawable", getPackageName());
setImageResource(id);

But you should really try to use different folders resources for the countries that you want to support.

A good rule of thumb when constructing arguments for use in conditional statements (IF, WHILE, etc.) is to always use the &&/|| forms, unless there's a very good reason not to. There are two reasons...

1. As others have mentioned, the short-circuiting behavior of &&/|| is similar to most C-like languages. That similarity / familiarity is generally considered a point in its favor.
2. Using the && or || forms forces you to write the full code for deciding your intent for vector arguments. When a = [1 0 0 1] and b = [0 1 0 1], is a&b true or false? I can't remember the rules for MATLAB's &, can you? Most people can't. On the other hand, if you use && or ||, you're FORCED to write the code "in full" to resolve the condition.

Doing this, rather than relying on MATLAB's resolution of vectors in & and |, leads to code that's a little bit more verbose, but a LOT safer and easier to maintain.

If you are going to do it in pure CSS (using scss) but you have different elements/classes inside the same parent class you can use this version!!

  &:first-of-type:nth-last-of-type(1) {
    max-width: 100%;
  }

  @for $i from 2 through 10 {
    &:first-of-type:nth-last-of-type(#{$i}),
    &:first-of-type:nth-last-of-type(#{$i}) ~ & {
      max-width: (100% / #{$i});
    }
  }

if you call pyplot as plt

frameon=False is to remove the border around the legend

and '' is passing the information that no variable should be in the legend

import matplotlib.pyplot as plt
plt.legend('',frameon=False)

CONVERT is SQL Server specific, CAST is ANSI.

CONVERT is more flexible in that you can format dates etc. Other than that, they are pretty much the same. If you don't care about the extended features, use CAST.

EDIT:

As noted by @beruic and @C-F in the comments below, there is possible loss of precision when an implicit conversion is used (that is one where you use neither CAST nor CONVERT). For further information, see CAST and CONVERT and in particular this graphic: SQL Server Data Type Conversion Chart. With this extra information, the original advice still remains the same. Use CAST where possible.

The name of the function in numpy is column_stack.

>>>a=np.array([5,4])
>>>np.column_stack(a)
array([[5, 4]])

Inlining is a suggestion to the compiler which it is free to ignore. It's ideal for small bits of code.

If your function is inlined, it's basically inserted in the code where the function call is made to it, rather than actually calling a separate function. This can assist with speed as you don't have to do the actual call.

It also assists CPUs with pipelining as they don't have to reload the pipeline with new instructions caused by a call.

The only disadvantage is possible increased binary size but, as long as the functions are small, this won't matter too much.

I tend to leave these sorts of decisions to the compilers nowadays (well, the smart ones anyway). The people who wrote them tend to have far more detailed knowledge of the underlying architectures.

Here is something very simple and handy.

BufferedImage bimg = ImageIO.read(new File(filename));
int width          = bimg.getWidth();
int height         = bimg.getHeight();

To install plugin "git" with all its dependencies:

curl -XPOST http://localhost:8080/pluginManager/installNecessaryPlugins -d '<install plugin="git@current" />'

Here, the plugin installed is git ; the version, specified as @current is ignored by Jenkins. Jenkins is running on localhost port 8080, change this as needed. As far as I know, this is the simplest way to install a plugin with all its dependencies 'by hand'. Tested on Jenkins v1.644

In the above answers, it is important to understand what is meant by "values are expanded at declaration/use time". Giving a value like *.c does not entail any expansion. It is only when this string is used by a command that it will maybe trigger some globbing. Similarly, a value like $(wildcard *.c) or $(shell ls *.c) does not entail any expansion and is completely evaluated at definition time even if we used := in the variable definition.

Try the following Makefile in directory where you have some C files:

VAR1 = *.c
VAR2 := *.c
VAR3 = $(wildcard *.c)
VAR4 := $(wildcard *.c)
VAR5 = $(shell ls *.c)
VAR6 := $(shell ls *.c)

all :
    touch foo.c
    @echo "now VAR1 = \"$(VAR1)\"" ; ls $(VAR1)
    @echo "now VAR2 = \"$(VAR2)\"" ; ls $(VAR2)
    @echo "now VAR3 = \"$(VAR3)\"" ; ls $(VAR3)
    @echo "now VAR4 = \"$(VAR4)\"" ; ls $(VAR4)
    @echo "now VAR5 = \"$(VAR5)\"" ; ls $(VAR5)
    @echo "now VAR6 = \"$(VAR6)\"" ; ls $(VAR6)
    rm -v foo.c

Running make will trigger a rule that creates an extra (empty) C file, called foo.c but none of the 6 variables has foo.c in its value.

It is possible to override the compatibility mode in intranet.

For IIS, just add the below code to the web.config. Worked for me with IE9.

<system.webServer>
  <httpProtocol>
    <customHeaders>
      <clear />
      <add name="X-UA-Compatible" value="IE=edge" />
    </customHeaders>
  </httpProtocol>
</system.webServer> 

Equivalent for Apache:

Header set X-UA-Compatible: IE=Edge

And for nginx:

add_header "X-UA-Compatible" "IE=Edge";

And for express.js:

res.set('X-UA-Compatible', 'IE=Edge')

$this->db->like() automatically adds the %s and escapes the string. So all you need is

$this->db->like('title', $query);
$res = $this->db->get('film');

See the CI documentation for reference: CI 2, CI 3, CI 4

var parent = context.Parent.FirstOrDefault(x => x.Id == modelParent.Id);
if (parent != null)
{
  parent.Childs = modelParent.Childs;
}

source

Here's my example crontab I always use as a template:

    # Use the hash sign to prefix a comment
    # +---------------- minute (0 - 59)
    # |  +------------- hour (0 - 23)
    # |  |  +---------- day of month (1 - 31)
    # |  |  |  +------- month (1 - 12)
    # |  |  |  |  +---- day of week (0 - 7) (Sunday=0 or 7)
    # |  |  |  |  |
    # *  *  *  *  *  command to be executed
    #--------------------------------------------------------------------------

To run my cron job every Monday, Wednesady and Friday at 7:00PM, the result will be:

      0 19 * * 1,3,5 nohup /home/lathonez/script.sh > /tmp/script.log 2>&1

source

You can pass any number of arguments to the function that apply is calling through either unnamed arguments, passed as a tuple to the args parameter, or through other keyword arguments internally captured as a dictionary by the kwds parameter.

For instance, let's build a function that returns True for values between 3 and 6, and False otherwise.

s = pd.Series(np.random.randint(0,10, 10))
s

0    5
1    3
2    1
3    1
4    6
5    0
6    3
7    4
8    9
9    6
dtype: int64

s.apply(lambda x: x >= 3 and x <= 6)

0     True
1     True
2    False
3    False
4     True
5    False
6     True
7     True
8    False
9     True
dtype: bool

This anonymous function isn't very flexible. Let's create a normal function with two arguments to control the min and max values we want in our Series.

def between(x, low, high):
    return x >= low and x =< high

We can replicate the output of the first function by passing unnamed arguments to args:

s.apply(between, args=(3,6))

Or we can use the named arguments

s.apply(between, low=3, high=6)

Or even a combination of both

s.apply(between, args=(3,), high=6)

Write them directly to files.

In Java (ugly):

package xxx;
class XxxUtils {
  public static final Yyy xxx(Xxx xxx) { return xxx.xxx(); }
}

In Kotlin:

@file:JvmName("XxxUtils")
package xxx
fun xxx(xxx: Xxx): Yyy = xxx.xxx()

Those two pieces of codes are equaled after compilation (even the compiled file name, the file:JvmName is used to control the compiled file name, which should be put just before the package name declaration).

Following will work like a charm (assuming you have div/span/table/tr/td/etc with "id"="myId")

    $("#myId").hover(function() {
        $(this).css('cursor','pointer').attr('title', 'This is a hover text.');
    }, function() {
        $(this).css('cursor','auto');
    });

As a complimentary, .css('cursor','pointer') will change the mouse pointer on hover.

You can use the FromStr trait's from_str method, which is implemented for i32:

let my_num = i32::from_str("9").unwrap_or(0);

h:button - clicking on a h:button issues a bookmarkable GET request.

h:commandbutton - Instead of a get request, h:commandbutton issues a POST request which sends the form data back to the server.

If you are more comfortable with a GUI, you can use the pgAdmin software.

• Connect to your source and destination servers
• Right-click on the source db > backup
• Right-click on the destination server > create > database. Use the same properties as the source db (you can see the properties of the source db by right-click > properties)
• Right-click on the created db > restore.

map is implemented from balanced binary search tree(usually a rb_tree), since all the member in balanced binary search tree is sorted so is map;

hash_map is implemented from hashtable.Since all the member in hashtable is unsorted so the members in hash_map(unordered_map) is not sorted.

hash_map is not a c++ standard library, but now it renamed to unordered_map(you can think of it renamed) and becomes c++ standard library since c++11 see this question Difference between hash_map and unordered_map? for more detail.

Below i will give some core interface from source code of how the two type map is implemented.

map:

The below code is just to show that, map is just a wrapper of an balanced binary search tree, almost all it's function is just invoke the balanced binary search tree function.

template <typename Key, typename Value, class Compare = std::less<Key>>
class map{
    // used for rb_tree to sort
    typedef Key    key_type;

    // rb_tree node value
    typedef std::pair<key_type, value_type> value_type;

    typedef Compare key_compare;

    // as to map, Key is used for sort, Value used for store value
    typedef rb_tree<key_type, value_type, key_compare> rep_type;

    // the only member value of map (it's  rb_tree)
    rep_type t;
};

// one construct function
template<typename InputIterator>
map(InputIterator first, InputIterator last):t(Compare()){
        // use rb_tree to insert value(just insert unique value)
        t.insert_unique(first, last);
}

// insert function, just use tb_tree insert_unique function
//and only insert unique value
//rb_tree insertion time is : log(n)+rebalance
// so map's  insertion time is also : log(n)+rebalance 
typedef typename rep_type::const_iterator iterator;
std::pair<iterator, bool> insert(const value_type& v){
    return t.insert_unique(v);
};

hash_map:

hash_map is implemented from hashtable whose structure is somewhat like this:

In the below code, i will give the main part of hashtable, and then gives hash_map.

// used for node list
template<typename T>
struct __hashtable_node{
    T val;
    __hashtable_node* next;
};

template<typename Key, typename Value, typename HashFun>
class hashtable{
    public:
        typedef size_t   size_type;
        typedef HashFun  hasher;
        typedef Value    value_type;
        typedef Key      key_type;
    public:
        typedef __hashtable_node<value_type> node;

        // member data is buckets array(node* array)
        std::vector<node*> buckets;
        size_type num_elements;

        public:
            // insert only unique value
            std::pair<iterator, bool> insert_unique(const value_type& obj);

};

Like map's only member is rb_tree, the hash_map's only member is hashtable. It's main code as below:

template<typename Key, typename Value, class HashFun = std::hash<Key>>
class hash_map{
    private:
        typedef hashtable<Key, Value, HashFun> ht;

        // member data is hash_table
        ht rep;

    public:
        // 100 buckets by default
        // it may not be 100(in this just for simplify)
        hash_map():rep(100){};

        // like the above map's insert function just invoke rb_tree unique function
        // hash_map, insert function just invoke hashtable's unique insert function
        std::pair<iterator, bool> insert(const Value& v){
                return t.insert_unique(v);
        };

};

Below image shows when a hash_map have 53 buckets, and insert some values, it's internal structure.

The below image shows some difference between map and hash_map(unordered_map), the image comes from How to choose between map and unordered_map?:

session.flush() is synchronise method means to insert data in to database sequentially.if we use this method data will not store in database but it will store in cache,if any exception will rise in middle we can handle it. But commit() it will store data in database,if we are storing more amount of data then ,there may be chance to get out Of Memory Exception,As like in JDBC program in Save point topic

All of the example above should work just add a document ready action and change the order of how you perform the updates to the texts, also make sure your using Script manager alternatively non of this will work for you. Here is the text within the code behind.

aspx

<div class="modal fade" id="myModal" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
        <div class="modal-dialog">
            <asp:UpdatePanel ID="upModal" runat="server" ChildrenAsTriggers="false" UpdateMode="Conditional">
                <ContentTemplate>
                    <div class="modal-content">
                        <div class="modal-header">
                            <h4 class="modal-title"><asp:Label ID="lblModalTitle" runat="server" Text=""></asp:Label></h4>
                            <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
                        </div>
                        <div class="modal-body">
                            <asp:Label ID="lblModalBody" runat="server" Text=""></asp:Label>
                        </div>
                        <div class="modal-footer">
                            <button class="btn btn-primary" data-dismiss="modal" aria-hidden="true">Close</button>
                        </div>
                    </div>
                </ContentTemplate>
            </asp:UpdatePanel>
        </div>
    </div>

Code Behind

lblModalTitle.Text = "Validation Errors";
lblModalBody.Text = form.Error;
upModal.Update();
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "myModal", "$(document).ready(function () {$('#myModal').modal();});", true);

Yes, It is required to add libraries after the source files/objects files. This command will solve the problem:

gcc -static -L/usr/lib -I/usr/lib main.c -ltommath

The following script will help u to go to a process if that script exist in a specified variable,

cat > waitfor.csh

    #!/bin/csh

    while !( -e $1 )

    sleep 10m

    end

ctrl+D

here -e is for working with files,

$1 is a shell variable,

sleep for 10 minutes

u can execute the script by ./waitfor.csh ./temp ; echo "the file exits"

The button names are not submit, so the php $_POST['submit'] value is not set. As in isset($_POST['submit']) evaluates to false.

<html>
<form action="" method="post">
    <input type="hidden" name="action" value="submit" />
    <select name="name">
        <option>John</option>
        <option>Henry</option>
    <select>
<!-- 
make sure all html elements that have an ID are unique and name the buttons submit 
-->
    <input id="tea-submit" type="submit" name="submit" value="Tea">
    <input id="coffee-submit" type="submit" name="submit" value="Coffee">
</form>
</html>

<?php
if (isset($_POST['action'])) {
    echo '<br />The ' . $_POST['submit'] . ' submit button was pressed<br />';
}
?>

You need to put the entire ternary expression in parenthesis. Unfortunately that means you can't use "@:", but you could do something like this:

@(deletedView ? "Deleted" : "Created by")

Razor currently supports a subset of C# expressions without using @() and unfortunately, ternary operators are not part of that set.

You have to check to ensure editTransactionRow is not null and pay_id is not null.

Cannot delete or update a parent row: a foreign key constraint fails (table1.user_role, CONSTRAINT FK143BF46A8dsfsfds@#5A6BD60 FOREIGN KEY (user_id) REFERENCES user (id))

What i did in two simple steps . first i delete the child row in child table like

mysql> delete from table2 where role_id = 2 && user_id =20;

Query OK, 1 row affected (0.10 sec)

and second step as deleting the parent

delete from table1 where id = 20;

Query OK, 1 row affected (0.12 sec)

By this i solve the Problem which means Delete Child then Delete parent

i Hope You got it. :)

I believe the browser is looking for those assets FROM the root of the webserver. This is difficult because it is easy to start developing on your machine WITHOUT actually using a webserver ( just by loading local files through your browser)

You could start by packaging your html and css/js together?

a directory structure something like:

-yourapp
  - index.html
  - assets
    - css
    - js
      - myPage.js

Then your script tag (from index.html) could look like

<script src="assets/js/myPage.js"></script>

An added benifit of packaging your html and assets in one directory is that you can copy the directory and give it to someone else or put it on another machine and it will work great.

Inconsolata (http://www.levien.com/type/myfonts/inconsolata.html) is a great monospaced font for programming. Earlier versions tend to act weird on OS X, but the newer versions work out very well.

In my eclipse Luna faced the same issue because of this URL https://sourceforge.net/projects/restfulplugin/files/site/

So i just Disabled the URL that was Shown in the Error From the Available Software Sites.

You may Check the URL or Try with the Updated URL reg to that Exception :)

In Bootstrap 4 alpha+ you can use this

class margin-bottom-5

The classes are named using the format: {property}-{sides}-{size}

Or if "NOT EXISTS" are not implemented

SELECT *
FROM   B
WHERE (SELECT count(*)  FROM   A WHERE  A.ID = B.ID) < 1

Got this error randomly in VS1017, when trying to build a project that was building perfectly fine the day before. Restarting the PC fixed the issue worked (I also ran the following command beforehand, not sure if it's required: netsh winsock reset)

Solution September 2020

Using Kotlin

fun File.getMimeType(context: Context): String? {
    if (this.isDirectory) {
        return null
    }

    fun fallbackMimeType(uri: Uri): String? {
        return if (uri.scheme == ContentResolver.SCHEME_CONTENT) {
            context.contentResolver.getType(uri)
        } else {
            val extension = MimeTypeMap.getFileExtensionFromUrl(uri.toString())
            MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension.toLowerCase(Locale.getDefault()))
        }
    }

    fun catchUrlMimeType(): String? {
        val uri = Uri.fromFile(this)

        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val path = Paths.get(uri.toString())
            try {
                Files.probeContentType(path) ?: fallbackMimeType(uri)
            } catch (ignored: IOException) {
                fallbackMimeType(uri)
            }
        } else {
            fallbackMimeType(uri)
        }
    }

    return try {
        URLConnection.guessContentTypeFromStream(this.inputStream()) ?: catchUrlMimeType()
    } catch (ignored: IOException) {
        catchUrlMimeType()
    }
}

That seems like the best option as it combines the previous answers.

First it tries to get the type using URLConnection.guessContentTypeFromStream but if this fails or returns null it tries to get the mimetype on Android O and above using

java.nio.file.Files
java.nio.file.Paths

Otherwise if the Android Version is below O or the method fails it returns the type using ContentResolver and MimeTypeMap

Use next, it will bypass that condition and rest of the code will work. Below i have provided the Full script and out put

class TestBreak
  puts " Enter the nmber"
  no= gets.to_i
  for i in 1..no
    if(i==5)
      next
    else 
      puts i
    end
  end
end

obj=TestBreak.new()

Output: Enter the nmber 10

1 2 3 4 6 7 8 9 10

A nice one is:

/*forward declaration, C compiles in one pass*/
bool isOdd(unsigned int n);

bool isEven(unsigned int n)
{
  if (n == 0) 
    return true ;  // I know 0 is even
  else
    return isOdd(n-1) ; // n is even if n-1 is odd
}

bool isOdd(unsigned int n)
{
  if (n == 0)
    return false ;
  else
    return isEven(n-1) ; // n is odd if n-1 is even
}

Note that this method use tail recursion involving two functions. It can be implemented efficiently (turned into a while/until kind of loop) if your compiler supports tail recursion like a Scheme compiler. In this case the stack should not overflow !

I have the practice (habit) of almost always initializing in the contructor for two reasons, one in my opinion it adds to readablitiy (cleaner), and two there is more logic control in the constructor than in one line. Even if initially the instance variable doesn't require logic, having it in the constructor gives more flexibility to add logic in the future if needed.

As to the concern mentioned above about multiple constructors, that's easily solved by having one no-arg constructor that initializes all the instance variables that are initilized the same for all constructors and then each constructor calls this() at the first line. That solves your reduncancy issues.

Promoting @JobaDiniz's comment to an answer:

Do not do the obvious thing and dispose the HttpClient instance, even though the code "looks right":

async Task<HttpResponseMessage> Method() {
  using (var client = new HttpClient())
    return client.GetAsync(request);
}

The same happens with C#'s new RIAA syntax; slightly less obvious:

async Task<HttpResponseMessage> Method() {
  using var client = new HttpClient();
  return client.GetAsync(request);
}

Instead, cache a static instance of HttpClient for your app or library, and reuse it:

static HttpClient client = new HttpClient();

async Task<HttpResponseMessage> Method() {
  return client.GetAsync(request);
}

(The Async() request methods are all thread safe.)

I was working on same. Check below statement. Worked for me!!

SELECT * FROM [Schema].[Table] WHERE [Column] LIKE '%' + @Parameter + '%'

Use the dec argument to set "," as the decimal point by adding:

 ce <- read.table("file.txt", header = TRUE, dec = ",")

add the following to your ~/.mavenrc:

export JAVA_HOME=/Library/Java/JavaVirtualMachines/{jdk-version}/Contents/Home

Second Solution:

echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile

var jsonIssues = []; // new Array
jsonIssues.push( { ID:1, "Name":"whatever" } );
// "push" some more here

No library, one line, properly padded

const str = (new Date()).toISOString().slice(0, 19).replace(/-/g, "/").replace("T", " ");

It uses the built-in function Date.toISOString(), chops off the ms, replaces the hyphens with slashes, and replaces the T with a space to go from say '2019-01-05T09:01:07.123' to '2019/01/05 09:01:07'.

Local time instead of UTC

const now = new Date();
const offsetMs = now.getTimezoneOffset() * 60 * 1000;
const dateLocal = new Date(now.getTime() - offsetMs);
const str = dateLocal.toISOString().slice(0, 19).replace(/-/g, "/").replace("T", " ");

It's easy. If you have two or more running container, complete next steps:

docker network create myNetwork
docker network connect myNetwork web1
docker network connect myNetwork web2

Now you connect from web1 to web2 container or the other way round.

Use the internal network IP addresses which you can find by running:

docker network inspect myNetwork

Note that only internal IP addresses and ports are accessible to the containers connected by the network bridge.

So for example assuming that web1 container was started with: docker run -p 80:8888 web1 (meaning that its server is running on port 8888 internally), and inspecting myNetwork shows that web1's IP is 172.0.0.2, you can connect from web2 to web1 using curl 172.0.0.2:8888).

Be aware that a lot of the really killer features are only in Enterprise Edition. Data compression and backup compression are among two of my top favorites - they give you free performance improvements right off the bat. Data compression lessens the amount of I/O you have to do, so a lot of queries speed up 20-40%. CPU use goes up, but in today's multi-core environments, we often have more CPU power but not more IO. Anyway, those are only in Enterprise.

If you're only going to use Standard Edition, then most of the improvements require changes to your application code and T-SQL code, so it's not quite as easy of a sell.

Try to use .live() instead of .bind(); the .live() will bind .hover to your checkbox after the Ajax request executes.

I'm running into this on a project myself - I had a table inside a div that was spilling out of the bottom of the div. None of the height fixes I tried worked, but I found a weird fix for it, and that is to put a paragraph at the bottom of the div with just a period in it. Then style the "color" of the text to be the same as the background of the container. Worked neat as you please and no javascript required. A non-breaking space will not work - nor does a transparent image.

Apparently it just needed to see that there is some content below the table in order to stretch to contain it. I wonder if this will work for anyone else.

This is the sort of thing that makes designers resort to table-based layouts - the amount of time I've spent figuring this stuff out and making it cross-browser compatible is driving me crazy.

Another way would be to use the apply() function.

If you have the data.frame

df <- data.frame (var1 = c(1:7,NA),
                  var2 = c(1,2,1,3,4,NA,NA,9),
                  var3 = c(NA)
                  )

then you can use apply() to see which columns fulfill your condition and so you can simply do the same subsetting as in the answer by Musa, only with an apply approach.

> !apply (is.na(df), 2, all)
 var1  var2  var3 
 TRUE  TRUE FALSE 

> df[, !apply(is.na(df), 2, all)]
  var1 var2
1    1    1
2    2    2
3    3    1
4    4    3
5    5    4
6    6   NA
7    7   NA
8   NA    9

Some of my best method extensions (I have a lot!):

public static T ToEnum<T>(this string str) where T : struct
{
    return (T)Enum.Parse(typeof(T), str);
}

//DayOfWeek sunday =  "Sunday".ToEnum<DayOfWeek>();

public static string ToString<T>(this IEnumerable<T> collection, string separator)
{
    return ToString(collection, t => t.ToString(), separator);
}

public static string ToString<T>(this IEnumerable<T> collection, Func<T, string> stringElement, string separator)
{
    StringBuilder sb = new StringBuilder();
    foreach (var item in collection)
    {
        sb.Append(stringElement(item));
        sb.Append(separator);
    }
    return sb.ToString(0, Math.Max(0, sb.Length - separator.Length));  // quita el ultimo separador
}

//new []{1,2,3}.ToString(i=>i*2, ", ")  --> "2, 4, 6"

Also, the next ones are meant to be able to continue in the same line in almost any situation, not declaring new variables and then removing state:

public static R Map<T, R>(this T t, Func<T, R> func)
{
    return func(t);
}

ExpensiveFindWally().Map(wally=>wally.FirstName + " " + wally.LastName)

public static R TryCC<T, R>(this T t, Func<T, R> func)
    where T : class
    where R : class
{
    if (t == null) return null;
    return func(t);
}

public static R? TryCS<T, R>(this T t, Func<T, R> func)
    where T : class
    where R : struct
{
    if (t == null) return null;
    return func(t);
}

public static R? TryCS<T, R>(this T t, Func<T, R?> func)
    where T : class
    where R : struct
{
    if (t == null) return null;
    return func(t);
}

public static R TrySC<T, R>(this T? t, Func<T, R> func)
    where T : struct
    where R : class
{
    if (t == null) return null;
    return func(t.Value);
}

public static R? TrySS<T, R>(this T? t, Func<T, R> func)
    where T : struct
    where R : struct
{
    if (t == null) return null;
    return func(t.Value);
}

public static R? TrySS<T, R>(this T? t, Func<T, R?> func)
    where T : struct
    where R : struct
{
    if (t == null) return null;
    return func(t.Value);
}

//int? bossNameLength =  Departament.Boss.TryCC(b=>b.Name).TryCS(s=>s.Length);


public static T ThrowIfNullS<T>(this T? t, string mensaje)
    where T : struct
{
    if (t == null)
        throw new NullReferenceException(mensaje);
    return t.Value;
}

public static T ThrowIfNullC<T>(this T t, string mensaje)
    where T : class
{
    if (t == null)
        throw new NullReferenceException(mensaje);
    return t;
}

public static T Do<T>(this T t, Action<T> action)
{
    action(t);
    return t;
}

//Button b = new Button{Content = "Click"}.Do(b=>Canvas.SetColumn(b,2));

public static T TryDo<T>(this T t, Action<T> action) where T : class
{
    if (t != null)
        action(t);
    return t;
}

public static T? TryDoS<T>(this T? t, Action<T> action) where T : struct
{
    if (t != null)
        action(t.Value);
    return t;
}

Hope it doesn't look like coming from Mars :)

Either serialize:

$postvalue=array("a","b","c");
<input type="hidden" name="result" value="<?php echo serialize($postvalue); ?>">

on receive: unserialize($_POST['result'])

Or implode:

$postvalue=array("a","b","c");
<input type="hidden" name="result" value="<?php echo implode(',', $postvalue); ?>">

On receive: explode(',', $_POST['result'])

There is a difference how web driver handles different windows and how it handles different tabs.

Case 1:
In case there are multiple windows, then the following code can help:

//Get the current window handle
String windowHandle = driver.getWindowHandle();

//Get the list of window handles
ArrayList tabs = new ArrayList (driver.getWindowHandles());
System.out.println(tabs.size());
//Use the list of window handles to switch between windows
driver.switchTo().window(tabs.get(0));

//Switch back to original window
driver.switchTo().window(mainWindowHandle);

Case 2:
In case there are multiple tabs in the same window, then there is only one window handle. Hence switching between window handles keeps the control in the same tab.
In this case using Ctrl + \t (Ctrl + Tab) to switch between tabs is more useful.

//Open a new tab using Ctrl + t
driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL +"t");
//Switch between tabs using Ctrl + \t
driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL +"\t");

Detailed sample code can be found here:
http://design-interviews.blogspot.com/2014/11/switching-between-tabs-in-same-browser-window.html

Java 8

map.entrySet().stream().sorted(Map.Entry.comparingByValue()).forEach(System.out::println);

I simply use

git fetch origin

to fetch the remote changes, and then I view both local and pending remote commits (and their associated changes) with the nice gitk tool involving the --all argument like:

gitk --all

MySQL Search & Replace Tool

Very useful web-based tool written in PHP which makes it easy to search and replace text strings in a MySQL database.

Probably the simplest way to do this is ->

import os
os.chdir("X:\Enter location of .bat file")
os.startfile("ask.bat")

This worked for me:

pip install psycopg2-binary

You can use functools.partial for this (as you suspected):

from functools import partial

def target(lock, iterable_item):
    for item in iterable_item:
        # Do cool stuff
        if (... some condition here ...):
            lock.acquire()
            # Write to stdout or logfile, etc.
            lock.release()

def main():
    iterable = [1, 2, 3, 4, 5]
    pool = multiprocessing.Pool()
    l = multiprocessing.Lock()
    func = partial(target, l)
    pool.map(func, iterable)
    pool.close()
    pool.join()

Example:

def f(a, b, c):
    print("{} {} {}".format(a, b, c))

def main():
    iterable = [1, 2, 3, 4, 5]
    pool = multiprocessing.Pool()
    a = "hi"
    b = "there"
    func = partial(f, a, b)
    pool.map(func, iterable)
    pool.close()
    pool.join()

if __name__ == "__main__":
    main()

Output:

hi there 1
hi there 2
hi there 3
hi there 4
hi there 5

Drop the quotes:

List<Object> bugs = JsonPath.read(githubIssues, "$..labels[?(@.name==bug)]");

See also this Json Path Example page

I would prefer the C++ size constraints over the C versions:

// Ignore to the end of file
cin.ignore(std::numeric_limits<std::streamsize>::max())

// Ignore to the end of line
cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n')

I had a similar issue trying to deploy an ASP Web Application to IIS 8. To fix it I did as Matt and Leniel suggested above. But also had to configure the Authentication setting of my site to enable Anonymous Authentication. And that Worked for me.

There's one more vital difference as of jQuery 3.0 that can easily lead to unexpected behaviour and isn't mentioned in previous answers:

Consider the following code:

let d = $.Deferred();_x000D_
d.done(() => console.log('then'));_x000D_
d.resolve();_x000D_
console.log('now');

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>

this will output:

then
now

Now, replace done() by then() in the very same snippet:

var d = $.Deferred();_x000D_
d.then(() => console.log('then'));_x000D_
d.resolve();_x000D_
console.log('now');

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>

output is now:

now
then

So, for immediatly resolved deferreds, the function passed to done() will always be invoked in a synchronous manner, whereas any argument passed to then() is invoked async.

This differs from prior jQuery versions where both callbacks get called synchronously, as mentioned in the upgrade guide:

Another behavior change required for Promises/A+ compliance is that Deferred .then() callbacks are always called asynchronously. Previously, if a .then() callback was added to a Deferred that was already resolved or rejected, the callback would run immediately and synchronously.

in eloquent you can use this

$users = User::select('name')->groupBy('name')->get()->toArray() ;

groupBy is actually fetching the distinct values, in fact the groupBy will categorize the same values, so that we can use aggregate functions on them. but in this scenario we have no aggregate functions, we are just selecting the value which will cause the result to have distinct values

This is inspired by Holstebroe's answer, plus comments here: Getting an Image object from a byte array

Bitmap newBitmap;
using (MemoryStream memoryStream = new MemoryStream(byteArrayIn))
    using (Image newImage = Image.FromStream(memoryStream))
        newBitmap = new Bitmap(newImage);
return newBitmap;

Adding on to @modiX answer, this is what works...DO NOT LEAVE THAT as empty

today.toLocaleDateString("default", {year: "numeric", month: "2-digit", day: "2-digit"})

Dictionaries do not have any inherent order. Or, rather, their inherent order is "arbitrary but not random", so it doesn't do you any good.

In different terms, your d and your e would be exactly equivalent dictionaries.

What you can do here is to use an OrderedDict:

from collections import OrderedDict
d = { '123': { 'key1': 3, 'key2': 11, 'key3': 3 },
      '124': { 'key1': 6, 'key2': 56, 'key3': 6 },
      '125': { 'key1': 7, 'key2': 44, 'key3': 9 },
    }
d_ascending = OrderedDict(sorted(d.items(), key=lambda kv: kv[1]['key3']))
d_descending = OrderedDict(sorted(d.items(), 
                                  key=lambda kv: kv[1]['key3'], reverse=True))

The original d has some arbitrary order. d_ascending has the order you thought you had in your original d, but didn't. And d_descending has the order you want for your e.

If you don't really need to use e as a dictionary, but you just want to be able to iterate over the elements of d in a particular order, you can simplify this:

for key, value in sorted(d.items(), key=lambda kv: kv[1]['key3'], reverse=True):
    do_something_with(key, value)

If you want to maintain a dictionary in sorted order across any changes, instead of an OrderedDict, you want some kind of sorted dictionary. There are a number of options available that you can find on PyPI, some implemented on top of trees, others on top of an OrderedDict that re-sorts itself as necessary, etc.

X * 2 = 1 bit shift left
X / 2 = 1 bit shift right
X * 3 = shift left 1 bit and then add X

Gearoid Murphy's solution works better for me since on my distro (Ubuntu 11.10), gcc-4.4 and gcc-4.6 are in the same directory, so --compiler-bindir is no help. The only caveat is I also had to install g++-4.4 and symlink it as well:

sudo ln -s /usr/bin/gcc-4.4 /usr/local/cuda/bin/gcc
sudo ln -s /usr/bin/g++-4.4 /usr/local/cuda/bin/g++

Here is a nice way to install virtualenvwrapper(update of this).

Download virtualenv-1.11.4 (you can find latest at here), Unzip it, open terminal

# Create a bootstrapenv and activate it:
$ cd ~
$ python <path to unzipped folder>/virtualenv.py bootstrapenv
$ source bootstrapenv/bin/activate

# Install virtualenvwrapper:
$ pip install virtualenvwrapper
$ mkdir -p ~/bootstrapenv/Envs

# append it to file `.bashrc`
$ vi ~/.bashrc
  source ~/bootstrapenv/bin/activate
  export WORKON_HOME=~/bootstrapenv/Envs
  source ~/bootstrapenv/bin/virtualenvwrapper.sh

# run it now.
$ source ~/.bashrc

That is it, now you can use mkvirtualenv env1, lsvirtualenv ..etc

Note: you can delete virtualenv-1.11.4 and virtualenv-1.11.4.zip from Downloads folders.

jQuery.fn.extend({
    zigzag: function () {
        var text = $(this).text();
        var zigzagText = '';
        var toggle = true; //lower/uppper toggle
            $.each(text, function(i, nome) {
                zigzagText += (toggle) ? nome.toUpperCase() : nome.toLowerCase();
                toggle = (toggle) ? false : true;
            });
    return zigzagText;
    }
});

Some other options:

Common Assembly

Create another assembly that has some common interfaces that can be implemented by the assemblies.

Reflection

This has all sorts of warnings and drawbacks, but you could use reflection to instantiate / communicate with the forms. This is both slow and runtime dynamic (no static checking of this code at compile time).

Visiblity property has not been implemented on the Tabpages, and there is no Insert method also.

You need to manually insert and remove tab pages.

Here is a work around for the same.

http://www.dotnetspider.com/resources/18344-Hiding-Showing-Tabpages-Tabcontrol.aspx

The most simple what I've found to get the XPath for a particular Element is to install FireBug extension for Firefox go to the site/webpage press F12 to bring up firebug; right select and right click the element on the page that you want to query and select "Inspect Element" Firebug will select the element in its IDE then right click the Element in Firebug and choose "Copy XPath" this function will give you the exact XPath Query you need to get the element you want using HTML Agility Library.

For some reason

if (strictBounds.contains(map.getCenter())) return;

didnt work for me (maybe a southern hemisphere issue). I had to change it to:

    function checkBounds() {
        var c = map.getCenter(),
            x = c.lng(),
            y = c.lat(),
            maxX = strictBounds.getNorthEast().lng(),
            maxY = strictBounds.getNorthEast().lat(),
            minX = strictBounds.getSouthWest().lng(),
            minY = strictBounds.getSouthWest().lat();

        if(x < minX || x > maxX || y < minY || y > maxY) {
            if (x < minX) x = minX;
            if (x > maxX) x = maxX;
            if (y < minY) y = minY;
            if (y > maxY) y = maxY;
            map.setCenter(new google.maps.LatLng(y, x));
        }
    }

Hope it will help someone.

The following should work:

var abc = "sAb";
bool exists = abc.IndexOf("ab", StringComparison.CurrentCultureIgnoreCase) > -1;

This workaround worked for me. I edited the serverInfo.properties file as given below:

server.info=Apache Tomcat/8.0.0
server.number=8.0.0.0
server.built=Oct 6 2016 20:15:31 UTC

The answer from brad.v is incorrect! It won't give you a concatenated string.

Here's the correct code, almost like brad.v's but with one important change:

DECLARE @results VarChar(1000)
  SELECT @results = CASE
     WHEN @results IS NULL THEN CONVERT( VarChar(20), [StudentId])
     ELSE @results + ', ' + CONVERT( VarChar(20), [StudentId])
  END
FROM Student WHERE condition = abc;

See the difference? :) brad.v please fix your answer, I can't do anything to correct it or comment on it 'cause my reputation here is zero. I guess I can remove mine after you fix yours. Thanks!

<hr> is not from struts. It is just an HTML tag.

So, take a look here: http://www.microbion.co.uk/web/vertline.htm This link will give you a couple of tips.

If you don't mind dipping into Rx as part of the monad, you can use TakeLast:

IEnumerable<int> source = Enumerable.Range(1, 10000);

IEnumerable<int> lastThree = source.AsObservable().TakeLast(3).AsEnumerable();

You can actually provide implementations of pure virtual functions in C++. The only difference is all pure virtual functions must be implemented by derived classes before the class can be instantiated.

too good !!! it's working and resolved my one day old problem easily

Dim b1 As Button

Set b1 = ActiveSheet.Buttons("Button 1")


b1.Enabled = False

You could probably use a set object instead. Just add numbers to the set. They inherently do not replicate.

When you have own struct, you could have own convert-to-string function.

package main

import (
    "fmt"
)

type Color struct {
    Red   int `json:"red"`
    Green int `json:"green"`
    Blue  int `json:"blue"`
}

func (c Color) String() string {
    return fmt.Sprintf("[%d, %d, %d]", c.Red, c.Green, c.Blue)
}

func main() {
    c := Color{Red: 123, Green: 11, Blue: 34}
    fmt.Println(c) //[123, 11, 34]
}

As @DanielImfeld pointed it, ENOENT will be thrown if you specify "cwd" in the options, but the given directory does not exist.

This error message is always caused by the invalid XML content in the beginning element. For example, extra small dot “.” in the beginning of XML element.

Any characters before the “<?xml….” will cause above “org.xml.sax.SAXParseException: Content is not allowed in prolog” error message.

A small dot “.” before the “<?xml….

To fix it, just delete all those weird characters before the “<?xml“.

Ref: http://www.mkyong.com/java/sax-error-content-is-not-allowed-in-prolog/

Use Apache Commons StringUtils class:

StringUtils.strip(String str, String stripChars);

You can use dirname:

os.path.dirname(path)

Return the directory name of pathname path. This is the first element of the pair returned by passing path to the function split().

And given the full path, then you can split normally to get the last portion of the path. For example, by using basename:

os.path.basename(path)

Return the base name of pathname path. This is the second element of the pair returned by passing path to the function split(). Note that the result of this function is different from the Unix basename program; where basename for '/foo/bar/' returns 'bar', the basename() function returns an empty string ('').

All together:

>>> import os
>>> path=os.path.dirname("C:/folder1/folder2/filename.xml")
>>> path
'C:/folder1/folder2'
>>> os.path.basename(path)
'folder2'

There is an option in search => file and shortcut is Ctrl+H. Go for further refer follow link. This is work fine with Eclipse Neon

Is there a way to find/replace across an entire project in Eclipse?

For Python 2 I have found that the boto3 library does not source the region from the ~/.aws/config if the region is defined in a different profile to default. So you have to define it in the session creation.

session = boto3.Session(
    profile_name='NotDefault',
    region_name='ap-southeast-2'
)

print(session.available_profiles)

client = session.client(
    'ec2'
)

Where my ~/.aws/config file looks like this:

[default]
region=ap-southeast-2

[NotDefault]
region=ap-southeast-2

I do this because I use different profiles for different logins to AWS, Personal and Work.

In the step 5 of Phil, "Resources" is no longer available in the new version of the Chrome. You need to click the page icon just beside the Ajax page listed in the bottom pane with the columns of Name, Method, Status, ...

Then it will show you more panels where you will find the error messages.

One more jQuery solution

For a single stylesheet with id "css" try this:

$('#css').replaceWith('<link id="css" rel="stylesheet" href="css/main.css?t=' + Date.now() + '"></link>');

Wrap it in a function that has global scrope and you can use it from the Developer Console in Chrome or Firebug in Firefox:

var reloadCSS = function() {
  $('#css').replaceWith('<link id="css" rel="stylesheet" href="css/main.css?t=' + Date.now() + '"></link>');
};

These two procedures let me reset the sequence and reset the sequence based on data in a table (apologies for the coding conventions used by this client):

CREATE OR REPLACE PROCEDURE SET_SEQ_TO(p_name IN VARCHAR2, p_val IN NUMBER)
AS
   l_num   NUMBER;
BEGIN
   EXECUTE IMMEDIATE 'select ' || p_name || '.nextval from dual' INTO l_num;

   -- Added check for 0 to avoid "ORA-04002: INCREMENT must be a non-zero integer"
   IF (p_val - l_num - 1) != 0
   THEN
      EXECUTE IMMEDIATE 'alter sequence ' || p_name || ' increment by ' || (p_val - l_num - 1) || ' minvalue 0';
   END IF;

   EXECUTE IMMEDIATE 'select ' || p_name || '.nextval from dual' INTO l_num;

   EXECUTE IMMEDIATE 'alter sequence ' || p_name || ' increment by 1 ';

   DBMS_OUTPUT.put_line('Sequence ' || p_name || ' is now at ' || p_val);
END;

CREATE OR REPLACE PROCEDURE SET_SEQ_TO_DATA(seq_name IN VARCHAR2, table_name IN VARCHAR2, col_name IN VARCHAR2)
AS
   nextnum   NUMBER;
BEGIN
   EXECUTE IMMEDIATE 'SELECT MAX(' || col_name || ') + 1 AS n FROM ' || table_name INTO nextnum;

   SET_SEQ_TO(seq_name, nextnum);
END;

dump and restore with --no-owner --no-privileges flags

e.g.

dump - pg_dump --no-owner --no-privileges --format=c --dbname=postgres://userpass:username@postgres:5432/schemaname > /tmp/full.dump

restore - pg_restore --no-owner --no-privileges --format=c --dbname=postgres://userpass:username@postgres:5432/schemaname /tmp/full.dump

try setting the display to block in your javascript instead of a blank value.

Try this:

python -m pip install -r requirements.txt

If you want just the time in a shell variable then this works:

var=`{ time <command> ; } 2>&1 1>/dev/null`

$provide service

They are technically the same thing, it's actually a different notation of using the provider function of the $provide service.

• If you're using a class: you could use the service notation.
• If you're using an object: you could use the factory notation.

The only difference between the service and the factory notation is that the service is new-ed and the factory is not. But for everything else they both look, smell and behave the same. Again, it's just a shorthand for the $provide.provider function.

// Factory

angular.module('myApp').factory('myFactory', function() {

  var _myPrivateValue = 123;

  return {
    privateValue: function() { return _myPrivateValue; }
  };

});

// Service

function MyService() {
  this._myPrivateValue = 123;
}

MyService.prototype.privateValue = function() {
  return this._myPrivateValue;
};

angular.module('myApp').service('MyService', MyService);

It depends on the nature of your application. And, since you did not describe it in great detail, it is an impossible question to answer. I find Backbone to be the easiest, but I work in Angular all day. Performance is more up to the coder than the framework, in my opinion.

Are you doing heavy DOM manipulation? I would use jQuery and Backbone.

Very data driven app? Angular with its nice data binding.

Game programming? None - direct to canvas; maybe a game engine.

I'm assuming you mean HTML-style hexadecimal notation, i.e. #rrggbb. Your code is almost correct, except you've got the order reversed. It should be:

var decColor = red * 65536 + green * 256 + blue;

Also, using bit-shifts might make it a bit easier to read:

var decColor = (red << 16) + (green << 8) + blue;

You need a little statistical knowledge to see this. R squared between two vectors is just the square of their correlation. So you can define you function as:

rsq <- function (x, y) cor(x, y) ^ 2

Sandipan's answer will return you exactly the same result (see the following proof), but as it stands it appears more readable (due to the evident $r.squared).

Let's do the statistics

Basically we fit a linear regression of y over x, and compute the ratio of regression sum of squares to total sum of squares.

lemma 1: a regression y ~ x is equivalent to y - mean(y) ~ x - mean(x)

lemma 2: beta = cov(x, y) / var(x)

lemma 3: R.square = cor(x, y) ^ 2

Warning

R squared between two arbitrary vectors x and y (of the same length) is just a goodness measure of their linear relationship. Think twice!! R squared between x + a and y + b are identical for any constant shift a and b. So it is a weak or even useless measure on "goodness of prediction". Use MSE or RMSE instead:

• How to obtain RMSE out of lm result?
• R - Calculate Test MSE given a trained model from a training set and a test set

I agree with 42-'s comment:

The R squared is reported by summary functions associated with regression functions. But only when such an estimate is statistically justified.

R squared can be a (but not the best) measure of "goodness of fit". But there is no justification that it can measure the goodness of out-of-sample prediction. If you split your data into training and testing parts and fit a regression model on the training one, you can get a valid R squared value on training part, but you can't legitimately compute an R squared on the test part. Some people did this, but I don't agree with it.

Here is very extreme example:

preds <- 1:4/4
actual <- 1:4

The R squared between those two vectors is 1. Yes of course, one is just a linear rescaling of the other so they have a perfect linear relationship. But, do you really think that the preds is a good prediction on actual??

In reply to wordsforthewise

Thanks for your comments 1, 2 and your answer of details.

You probably misunderstood the procedure. Given two vectors x and y, we first fit a regression line y ~ x then compute regression sum of squares and total sum of squares. It looks like you skip this regression step and go straight to the sum of square computation. That is false, since the partition of sum of squares does not hold and you can't compute R squared in a consistent way.

As you demonstrated, this is just one way for computing R squared:

preds <- c(1, 2, 3)
actual <- c(2, 2, 4)
rss <- sum((preds - actual) ^ 2)  ## residual sum of squares
tss <- sum((actual - mean(actual)) ^ 2)  ## total sum of squares
rsq <- 1 - rss/tss
#[1] 0.25

But there is another:

regss <- sum((preds - mean(preds)) ^ 2) ## regression sum of squares
regss / tss
#[1] 0.75

Also, your formula can give a negative value (the proper value should be 1 as mentioned above in the Warning section).

preds <- 1:4 / 4
actual <- 1:4
rss <- sum((preds - actual) ^ 2)  ## residual sum of squares
tss <- sum((actual - mean(actual)) ^ 2)  ## total sum of squares
rsq <- 1 - rss/tss
#[1] -2.375

Final remark

I had never expected that this answer could eventually be so long when I posted my initial answer 2 years ago. However, given the high views of this thread, I feel obliged to add more statistical details and discussions. I don't want to mislead people that just because they can compute an R squared so easily, they can use R squared everywhere.

The trick is to give padding on the td elements, but make an exception for the first (yes, it's hacky, but sometimes you have to play by the browser's rules):

td {
  padding-top:20px;
  padding-bottom:20px;
  padding-right:20px;   
}

td:first-child {
  padding-left:20px;
  padding-right:0;
}

First-child is relatively well supported: https://developer.mozilla.org/en-US/docs/CSS/:first-child

You can use the same reasoning for the horizontal padding by using tr:first-child td.

Alternatively, exclude the first column by using the not operator. Support for this is not as good right now, though.

td:not(:first-child) {
  padding-top:20px;
  padding-bottom:20px;
  padding-right:20px;       
}

Python includes the round() function which lets you specify the number of digits you want. From the documentation:

round(x[, n])

Return the floating point value x rounded to n digits after the decimal point. If n is omitted, it defaults to zero. The result is a floating point number. Values are rounded to the closest multiple of 10 to the power minus n; if two multiples are equally close, rounding is done away from 0 (so. for example, round(0.5) is 1.0 and round(-0.5) is -1.0).

So you would want to use round(x, 2) to do normal rounding. To ensure that the number is always rounded up you would need to use the ceil(x) function. Similarly, to round down use floor(x).

This would work perfectely, if you are using current timestamp

SELECT * FROM reports WHERE date_entered = (SELECT max(date_entered) FROM REPORTS)

This would also work, if you are not using current timestamp but you are using date and time column seperately

SELECT * FROM reports WHERE date_entered = (SELECT max(date_entered) FROM REPORTS) ORDER BY time DESC LIMIT 1

Margin is applied to the outside of you element hence effecting how far your element is away from other elements.

Padding is applied to the inside of your element hence effecting how far your element's content is away from the border.

Also, using margin will not affect your element's dimensions whereas padding will make your elements dimensions (set height + padding) so for example if you have a 100x100px div with a 5 px padding, your div will actually be 105x105px

There is a really useful extension called "xdebug" that will make your reports much nicer as well.

One alternative would be a KeyedCollection if the key is embedded in the value.

Just create a basic implementation in a sealed class to use.

So to replace Dictionary<string, int> (which isn't a very good example as there isn't a clear key for a int).

private sealed class IntDictionary : KeyedCollection<string, int>
{
    protected override string GetKeyForItem(int item)
    {
        // The example works better when the value contains the key. It falls down a bit for a dictionary of ints.
        return item.ToString();
    }
}

KeyedCollection<string, int> intCollection = new ClassThatContainsSealedImplementation.IntDictionary();

intCollection.Add(7);

int valueByIndex = intCollection[0];

Although accepted answer is right, but IMHO is just a workaround.

To be clear: it's a perfectly normal situation that a persistent connection may become stale. But unfortunately it's very bad when the HTTP client library cannot handle it properly.

Since this faulty behavior in Apache HttpClient was not fixed for many years, I definitely would prefer to switch to a library that can easily recover from a stale connection problem, e.g. OkHttp.

Why?

1. OkHttp pools http connections by default.
2. It gracefully recovers from situations when http connection becomes stale and request cannot be retried due to being not idempotent (e.g. POST). I cannot say it about Apache HttpClient (mentioned NoHttpResponseException).
3. Supports HTTP/2.0 from early drafts and beta versions.

When I switched to OkHttp, my problems with NoHttpResponseException disappeared forever.

The HTML5 spec says that the type attribute is purely advisory and explains in detail how browsers should act if it's omitted (too much to quote here). It doesn't explicitly say that an omitted type attribute is either valid or invalid, but you can safely omit it knowing that browsers will still react as you expect.

declare @nReturn int = 0 EXEC @nReturn = Stored Procedures

Start with this:

Set fso = CreateObject("Scripting.FileSystemObject")
If (fso.FileExists(path)) Then
   msg = path & " exists."
Else
   msg = path & " doesn't exist."
End If

Taken from the documentation.

$_POST is an array in itsself you don't need to make an array out of it. What you did is nest the $_POST array inside a new array. This is why you print Array. Change it to:

foreach ($_POST as $key => $value) {

  echo "<p>".$key."</p>";
  echo "<p>".$value."</p>";
  echo "<hr />";

} 

The goal can be achieved by using IFs indirectly.

Below is an example of a complex expression that can be written quite concisely and logically in a CMD batch, without incoherent labels and GOTOs.

Code blocks between () brackets are handled by CMD as a (pathetic) kind of subshell. Whatever exit code comes out of a block will be used to determine the true/false value the block plays in a larger boolean expression. Arbitrarily large boolean expressions can be built with these code blocks.

Simple example

Each block is resolved to true (i.e. ERRORLEVEL = 0 after the last statement in the block has executed) / false, until the value of the whole expression has been determined or control jumps out (e.g. via GOTO):

 ((DIR c:\xsgdde /w) || (DIR c:\ /w)) && (ECHO -=BINGO=-)

Complex example

This solves the problem raised initially. Multiple statements are possible in each block but in the || || || expression it's preferable to be concise so that it's as readable as possible. ^ is an escape char in CMD batches and when placed at the end of a line it will escape the EOL and instruct CMD to continue reading the current batch of statements on the next line.

@ECHO OFF
SETLOCAL ENABLEDELAYEDEXPANSION

(
    (CALL :ProcedureType1 a b) ^
        || (CALL :ProcedureType2 sgd) ^
            || (CALL :ProcedureType1 c c)
) ^
    && (
        ECHO -=BINGO=-
        GOTO :EOF
    )
ECHO -=no bingo for you=-
GOTO :EOF

:ProcedureType1
    IF "%~1" == "%~2" (EXIT /B 0) ELSE (EXIT /B 1)
GOTO :EOF (this line is decorative as it's never reached)

:ProcedureType2
    ECHO :ax:xa:xx:aa:|FINDSTR /I /L /C:":%~1:">nul
GOTO :EOF

Go to https://www.visualstudio.com/en-us/downloads/download-visual-studio-vs.aspx

Navigate to "Visual studio downloads", select "Visual studio 2015"

Next, choose format "ISO"

As answered above:

//Parent[@id='1']/Children/child/@name 

will only output the name attribute of the 4 child nodes belonging to the Parent specified by its predicate [@id=1]. You'll then need to change the predicate to [@id=2] to get the set of child nodes for the next Parent.

However, if you ignore the Parent node altogether and use:

//child/@name

you can select name attribute of all child nodes in one go.

name="Child_2"
name="Child_4"
name="Child_1"
name="Child_3"
name="Child_1"
name="Child_2"
name="Child_4"
name="Child_3"

Angular 2 Deployment in Github Pages

Testing Deployment of Angular2 Webpack in ghpages

First get all the relevant files from the dist folder of your application, for me it was the : + css files in the assets folder + main.bundle.js + polyfills.bundle.js + vendor.bundle.js

Then push this files in the repo which you have created.

1 -- If you want the application to run on the root directory - create a special repo with the name [yourgithubusername].github.io and push these files in the master branch

2 -- Where as if you want to create these page in the sub directory or in a different branch other than than the root, create a branch gh-pages and push these files in that branch.

In both the cases the way we access these deployed pages will be different.

For the First case it will be https://[yourgithubusername].github.io and for the second case it will be [yourgithubusername].github.io/[Repo name].

If suppose you want to deploy it using the second case make sure to change the base url of the index.html file in the dist as all the route mappings depend on the path you give and it should be set to [/branchname].

Link to this page

https://rahulrsingh09.github.io/Deployment

Git Repo

https://github.com/rahulrsingh09/Deployment

#!/bin/bash
echo Please, enter your name
read NAME
echo "Hi $NAME!"
if [ "x$NAME" = "xyes" ] ; then
 # do something
fi

I s a short script to read in bash and echo back results.

You can't request admin rights from a batch file, but you could write a windows scripting host script in %temp% and run that (and that in turn executes your batch as admin) You want to call the ShellExecute method in the Shell.Application object with "runas" as the verb

If not HTML, then UTF-8 is not recommended. koi8-r and windows-1251 only without problems. So use html mail.

$headers['Content-Type']='text/html; charset=UTF-8';
$body='<html><head><meta charset="UTF-8"><title>ESP Notufy - ESP ?????????</title></head><body>'.$text.'</body></html>';


$mail_object=& Mail::factory('smtp',
    array ('host' => $host,
        'auth' => true,
        'username' => $username,
        'password' => $password));
$mail_object->send($recipents, $headers, $body);
}

Use transform: scale(...); and add matching margin: -...px to compensate free space from scaling. (you can use * {outline: 1px solid}to see element boundaries).

checked is boolean property so you can directly use it in IF condition:-

 <script type="text/javascript">
    function validate() {
        if (document.getElementById('remember').checked) {
            alert("checked");
        } else {
            alert("You didn't check it! Let me check it for you.");
        }
    }
    </script>

Here is another approach. It will work with any layout manager.

1. Make Adapter class abstract
2. Then create an abstract method in adapter class (eg. load())
3. In onBindViewHolder check the position if last and call load()
4. Override the load() function while creating the adapter object in your activity or fragment.
5. In the overided load function implement your loadmore call

For a detail understanding I wrote a blog post and example project get it here http://sab99r.com/blog/recyclerview-endless-load-more/

MyAdapter.java

public abstract class MyAdapter extends RecyclerView.Adapter<ViewHolder>{

        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            //check for last item
            if ((position >= getItemCount() - 1))
                load();
        }

        public abstract void load();
}

MyActivity.java

public class MainActivity extends AppCompatActivity {
    List<Items> items;
    MyAdapter adapter;

   @Override
    protected void onCreate(Bundle savedInstanceState) {
    ...
    adapter=new MyAdapter(items){
            @Override
            public void load() {
                //implement your load more here
                Item lastItem=items.get(items.size()-1);
                loadMore();
            }
        };
   }
}

There is also %s that allows you to create any symbols, for example:

%s|some words|          #Same as :'some words'
%s[other words]         #Same as :'other words'
%s_last example_        #Same as :'last example'

Since Ruby 2.0.0 you also have:

%i( a b c )   # => [ :a, :b, :c ]
%i[ a b c ]   # => [ :a, :b, :c ]
%i_ a b c _   # => [ :a, :b, :c ]
# etc...

According to http://developer.android.com/tools/debugging/debugging-log.html:

Here's an example of a filter expression that suppresses all log messages except those with the tag "ActivityManager", at priority "Info" or above, and all log messages with tag "MyApp", with priority "Debug" or above:

adb logcat ActivityManager:I MyApp:D *:S

The final element in the above expression, *:S, sets the priority level for all tags to "silent", thus ensuring only log messages with "View" and "MyApp" are displayed.

• V — Verbose (lowest priority)
• D — Debug
• I — Info
• W — Warning
• E — Error
• F — Fatal
• S — Silent (highest priority, on which nothing is ever printed)

This is actually compiler dependent, and not supported by any standard.

Here however you have a macro implementation that does the count:

#define PP_NARG(...) \
         PP_NARG_(__VA_ARGS__,PP_RSEQ_N())
#define PP_NARG_(...) \
         PP_ARG_N(__VA_ARGS__)
#define PP_ARG_N( \
          _1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \
         _11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \
         _21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \
         _31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \
         _41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \
         _51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \
         _61,_62,_63,N,...) N
#define PP_RSEQ_N() \
         63,62,61,60,                   \
         59,58,57,56,55,54,53,52,51,50, \
         49,48,47,46,45,44,43,42,41,40, \
         39,38,37,36,35,34,33,32,31,30, \
         29,28,27,26,25,24,23,22,21,20, \
         19,18,17,16,15,14,13,12,11,10, \
         9,8,7,6,5,4,3,2,1,0

/* Some test cases */


PP_NARG(A) -> 1
PP_NARG(A,B) -> 2
PP_NARG(A,B,C) -> 3
PP_NARG(A,B,C,D) -> 4
PP_NARG(A,B,C,D,E) -> 5
PP_NARG(1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3,4,5,6,7,8,9,0,
         1,2,3) -> 63

Alan already gave you the right answer - use the sAMAccountName to filter your user.

I would add a recommendation on your use of DirectorySearcher - if you only want one or two pieces of information, add them into the "PropertiesToLoad" collection of the DirectorySearcher.

Instead of retrieving the whole big user object and then picking out one or two items, this will just return exactly those bits you need.

Sample:

adSearch.PropertiesToLoad.Add("sn");  // surname = last name
adSearch.PropertiesToLoad.Add("givenName");  // given (or first) name
adSearch.PropertiesToLoad.Add("mail");  // e-mail addresse
adSearch.PropertiesToLoad.Add("telephoneNumber");  // phone number

Those are just the usual AD/LDAP property names you need to specify.

The solution of Judah Himango and Hans Passant is available in the Designer (I am currently using VS2015):

Static libraries do not link with other static libraries. The only way to do this is to use your librarian/archiver tool (for example ar on Linux) to create a single new static library by concatenating the multiple libraries.

Edit: In response to your update, the only way I know to select only the symbols that are required is to manually create the library from the subset of the .o files that contain them. This is difficult, time consuming and error prone. I'm not aware of any tools to help do this (not to say they don't exist), but it would make quite an interesting project to produce one.

another solution using dplyr is:

df <- ## your data ##
df <- df %>%
        mutate(Den = ifelse(any(is.na(Den)) | any(Den != 1), 0, 1))

The correct way to do it would be:

adb -s 123abc12 shell getprop

Which will give you a list of all available properties and their values. Once you know which property you want, you can give the name as an argument to getprop to access its value directly, like this:

adb -s 123abc12 shell getprop ro.product.model

The details in adb devices -l consist of the following three properties: ro.product.name, ro.product.model and ro.product.device.

Note that ADB shell ends lines with \r\n, which depending on your platform might or might not make it more difficult to access the exact value (e.g. instead of Nexus 7 you might get Nexus 7\r).

I like the look of that apex utility. However its also good to know about the standard oracle functions you can use for this: subStr and inStr http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/functions001.htm

One solution which avoids MultiIndex is to create a new datetime column setting day = 1. Then group by this column.

Normalise day of month

df = pd.DataFrame({'Date': pd.to_datetime(['2017-10-05', '2017-10-20', '2017-10-01', '2017-09-01']),
                   'Values': [5, 10, 15, 20]})

# normalize day to beginning of month, 4 alternative methods below
df['YearMonth'] = df['Date'] + pd.offsets.MonthEnd(-1) + pd.offsets.Day(1)
df['YearMonth'] = df['Date'] - pd.to_timedelta(df['Date'].dt.day-1, unit='D')
df['YearMonth'] = df['Date'].map(lambda dt: dt.replace(day=1))
df['YearMonth'] = df['Date'].dt.normalize().map(pd.tseries.offsets.MonthBegin().rollback)

Then use groupby as normal:

g = df.groupby('YearMonth')

res = g['Values'].sum()

# YearMonth
# 2017-09-01    20
# 2017-10-01    30
# Name: Values, dtype: int64

Comparison with pd.Grouper

The subtle benefit of this solution is, unlike pd.Grouper, the grouper index is normalized to the beginning of each month rather than the end, and therefore you can easily extract groups via get_group:

some_group = g.get_group('2017-10-01')

Calculating the last day of October is slightly more cumbersome. pd.Grouper, as of v0.23, does support a convention parameter, but this is only applicable for a PeriodIndex grouper.

Comparison with string conversion

An alternative to the above idea is to convert to a string, e.g. convert datetime 2017-10-XX to string '2017-10'. However, this is not recommended since you lose all the efficiency benefits of a datetime series (stored internally as numerical data in a contiguous memory block) versus an object series of strings (stored as an array of pointers).

I solved this problem this way. I used kotlin.

        var timer = Timer()
        var DELAY:Long = 2000

        editText.addTextChangedListener(object : TextWatcher {

            override fun afterTextChanged(s: Editable?) {
                Log.e("TAG","timer start")
                timer = Timer()
                timer.schedule(object : TimerTask() {
                    override fun run() {
                        //do something
                    }
                }, DELAY)
            }

            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}

            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
                Log.e("TAG","timer cancel ")
                timer.cancel() //Terminates this timer,discarding any currently scheduled tasks.
                timer.purge() //Removes all cancelled tasks from this timer's task queue.
            }
        })

I used this:

jQuery.validator.addMethod("phoneUS", function(phone_number, element) {
phone_number = phone_number.replace(/\s+/g, ""); 
return this.optional(element) || phone_number.length > 9 &&
    phone_number.match(/^(1-?)?(\([2-9]\d{2}\)|[2-9]\d{2})-?[2-9]\d{2}-?\d{4}$/);
}, "Please specify a valid phone number");

Use end = " ", inside the print function

Code:

for x in range(1,11):
       print(x,end = " ")

Solution posted by Denys S. in the question post:

I quite messed it up with c to c++ conversion (basically env variable stuff), but I got it working with the following code for C++:

#include <string.h>
#include <stdio.h>
#include <jni.h>

jstring Java_the_package_MainActivity_getJniString( JNIEnv* env, jobject obj){

    jstring jstr = (*env)->NewStringUTF(env, "This comes from jni.");
    jclass clazz = (*env)->FindClass(env, "com/inceptix/android/t3d/MainActivity");
    jmethodID messageMe = (*env)->GetMethodID(env, clazz, "messageMe", "(Ljava/lang/String;)Ljava/lang/String;");
    jobject result = (*env)->CallObjectMethod(env, obj, messageMe, jstr);

    const char* str = (*env)->GetStringUTFChars(env,(jstring) result, NULL); // should be released but what a heck, it's a tutorial :)
    printf("%s\n", str);

    return (*env)->NewStringUTF(env, str);
}

And next code for java methods:

    public class MainActivity extends Activity {
    private static String LIB_NAME = "thelib";

    static {
        System.loadLibrary(LIB_NAME);
    }

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView tv = (TextView) findViewById(R.id.textview);
        tv.setText(this.getJniString());
    }

    // please, let me live even though I used this dark programming technique
    public String messageMe(String text) {
        System.out.println(text);
        return text;
    }

    public native String getJniString();
}

you can use the weight value specified in the Google Fonts.

body{
 font-family: 'Heebo', sans-serif;
 font-weight: 100;
}

Probably late, but might help someone in need.

import serial.tools.list_ports


class COMPorts:

    def __init__(self, data: list):
        self.data = data

    @classmethod
    def get_com_ports(cls):
        data = []
        ports = list(serial.tools.list_ports.comports())

        for port_ in ports:
            obj = Object(data=dict({"device": port_.device, "description": port_.description.split("(")[0].strip()}))
            data.append(obj)

        return cls(data=data)

    @staticmethod
    def get_description_by_device(device: str):
        for port_ in COMPorts.get_com_ports().data:
            if port_.device == device:
                return port_.description

    @staticmethod
    def get_device_by_description(description: str):
        for port_ in COMPorts.get_com_ports().data:
            if port_.description == description:
                return port_.device


class Object:
    def __init__(self, data: dict):
        self.data = data
        self.device = data.get("device")
        self.description = data.get("description")


if __name__ == "__main__":
    for port in COMPorts.get_com_ports().data:
        print(port.device)
        print(port.description)

    print(COMPorts.get_device_by_description(description="Arduino Leonardo"))
    print(COMPorts.get_description_by_device(device="COM3"))

This issue occurred after Visual Studio 2012 installation. The issue resolved by replacing the cvtres.exe from VS2010 with the one from VS2012.

Thank you to "social.msdn"!

On Ubuntu until python-distribute is something newer than 0.7 I'd recommend:

$ wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py -O - | sudo python

See http://reinout.vanrees.org/weblog/2013/07/08/new-setuptools-buildout.html

I think you are looking for the IGNORE_DUP_KEY option on your index. Have a look at IGNORE_DUP_KEY ON option documented at http://msdn.microsoft.com/en-us/library/ms186869.aspx which causes duplicate insertion attempts to produce a warning instead of an error.

req.query is the query string sent to the server, example /page?test=1, req.param is the parameters passed to the handler.

app.get('/user/:id', handler);, going to /user/blah, req.param.id would return blah;

You could switch the onClick event handler on the button to an onSubmit handler on the form:

render : function() {
      return (
        <form onSubmit={this.handleLogin}>
          <input type="text" name="email" placeholder="Email" />
          <input type="password" name="password" placeholder="Password" />
          <button type="submit">Login</button>
        </form>
      );
    },

Then you can make use of FormData to parse the form (and construct a JSON object from its entries if you want).

handleLogin: function(e) {
   const formData = new FormData(e.target)
   const user = {}

   e.preventDefault()

   for (let entry of formData.entries()) {
       user[entry[0]] = entry[1]
   }

   // Do what you will with the user object here
}

Only release a property in dealloc method. If you want to release memory that the property is holding, just set it as nil:

self.<property> = nil;

I realise that's not the case here but it might help someone.

Double-check you didn't create the conf file in /etc/apache2/sites-enabled by mistake. You get the same error.

Warning: eval() can be used to execute arbitrary Python code. You should never use eval() with untrusted strings. (See Security of Python's eval() on untrusted strings?)

This seems simplest.

>>> class Foo(object):
...     pass
... 
>>> eval("Foo")
<class '__main__.Foo'>

You can use QString.arg like this

QString my_formatted_string = QString("%1/%2-%3.txt").arg("~", "Tom", "Jane");
// You get "~/Tom-Jane.txt"

This method is preferred over sprintf because:

Changing the position of the string without having to change the ordering of substitution, e.g.

// To get "~/Jane-Tom.txt"
QString my_formatted_string = QString("%1/%3-%2.txt").arg("~", "Tom", "Jane");

Or, changing the type of the arguments doesn't require changing the format string, e.g.

// To get "~/Tom-1.txt"
QString my_formatted_string = QString("%1/%2-%3.txt").arg("~", "Tom", QString::number(1));

As you can see, the change is minimal. Of course, you generally do not need to care about the type that is passed into QString::arg() since most types are correctly overloaded.

One drawback though: QString::arg() doesn't handle std::string. You will need to call: QString::fromStdString() on your std::string to make it into a QString before passing it to QString::arg(). Try to separate the classes that use QString from the classes that use std::string. Or if you can, switch to QString altogether.

UPDATE: Examples are updated thanks to Frank Osterfeld.

UPDATE: Examples are updated thanks to alexisdm.

You can try the following:

theAnchorText = "I'm home";

OR

theAnchorText = 'I\'m home';

That method will not work. The <title> only supports plain text. You will need to create an .ico image with the filename of favicon.ico and save it into the root folder of your site (where your default page is).

Alternatively, you can save the icon where ever you wish and call it whatever you want, but simply insert the following code into the <head> section of your HTML and reference your icon:

<link rel="shortcut icon" href="your_image_path_and_name.ico" />

You can use Photoshop (with a plug in) or GIMP (free) to create an .ico file, or you can just use IcoFX, which is my personal favourite as it is really easy to use and does a great job (you can get an older version of the software for free from download.com).

Update 1: You can also use a number of online tools to create favicons such as ConvertIcon, which I've used successfully. There are other free online tools available now too, which do the same (accessible by a simple Google search), but also generate other icons such as the Windows 8/10 Start Menu icons and iOS App Icons.

Update 2: You can also use .png images as icons providing IE11 is the only version of IE you need to support. You just need to reference them using the HTML code above. Note that IE10 and older still require .ico files.

Update 3: You can now use Emoji characters in the title field. On Windows 10, it should generally fall back and use the Segoe UI Emoji font and display nicely, however you'll need to test and see how other systems support and display your chosen emoji, as not all devices may have the same Emoji available.

For combining HTML and PHP you can use .phtml files.

You first have to detect what encoding has been used. As you’re parsing RSS feeds (probably via HTTP), you should read the encoding from the charset parameter of the Content-Type HTTP header field. If it is not present, read the encoding from the encoding attribute of the XML processing instruction. If that’s missing too, use UTF-8 as defined in the specification.

Edit   Here is what I probably would do:

I’d use cURL to send and fetch the response. That allows you to set specific header fields and fetch the response header as well. After fetching the response, you have to parse the HTTP response and split it into header and body. The header should then contain the Content-Type header field that contains the MIME type and (hopefully) the charset parameter with the encoding/charset too. If not, we’ll analyse the XML PI for the presence of the encoding attribute and get the encoding from there. If that’s also missing, the XML specs define to use UTF-8 as encoding.

$url = 'http://www.lr-online.de/storage/rss/rss/sport.xml';

$accept = array(
    'type' => array('application/rss+xml', 'application/xml', 'application/rdf+xml', 'text/xml'),
    'charset' => array_diff(mb_list_encodings(), array('pass', 'auto', 'wchar', 'byte2be', 'byte2le', 'byte4be', 'byte4le', 'BASE64', 'UUENCODE', 'HTML-ENTITIES', 'Quoted-Printable', '7bit', '8bit'))
);
$header = array(
    'Accept: '.implode(', ', $accept['type']),
    'Accept-Charset: '.implode(', ', $accept['charset']),
);
$encoding = null;
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HEADER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
$response = curl_exec($curl);
if (!$response) {
    // error fetching the response
} else {
    $offset = strpos($response, "\r\n\r\n");
    $header = substr($response, 0, $offset);
    if (!$header || !preg_match('/^Content-Type:\s+([^;]+)(?:;\s*charset=(.*))?/im', $header, $match)) {
        // error parsing the response
    } else {
        if (!in_array(strtolower($match[1]), array_map('strtolower', $accept['type']))) {
            // type not accepted
        }
        $encoding = trim($match[2], '"\'');
    }
    if (!$encoding) {
        $body = substr($response, $offset + 4);
        if (preg_match('/^<\?xml\s+version=(?:"[^"]*"|\'[^\']*\')\s+encoding=("[^"]*"|\'[^\']*\')/s', $body, $match)) {
            $encoding = trim($match[1], '"\'');
        }
    }
    if (!$encoding) {
        $encoding = 'utf-8';
    } else {
        if (!in_array($encoding, array_map('strtolower', $accept['charset']))) {
            // encoding not accepted
        }
        if ($encoding != 'utf-8') {
            $body = mb_convert_encoding($body, 'utf-8', $encoding);
        }
    }
    $simpleXML = simplexml_load_string($body, null, LIBXML_NOERROR);
    if (!$simpleXML) {
        // parse error
    } else {
        echo $simpleXML->asXML();
    }
}

you can also skip creating dictionary altogether. i used below approach to same problem .

 mappedItems: {};
 items.forEach(item => {     
        if (mappedItems[item.key]) {
           mappedItems[item.key].push({productId : item.productId , price : item.price , discount : item.discount});
        } else {
          mappedItems[item.key] = [];
          mappedItems[item.key].push({productId : item.productId , price : item.price , discount : item.discount}));
        }
    });

There is a smart way to disable inspect element in your website. Just add the following snippet inside script tag :

$(document).bind("contextmenu",function(e) {
 e.preventDefault();
});

Please check out this blog

The function key F12 which directly take inspect element from browser, we can also disable it, by using the following code:

$(document).keydown(function(e){
    if(e.which === 123){
       return false;
    }
});

I'm new to Spring, but I discovered this working solution. Please tell me if it's a deprecable way.

I make Spring inject applicationContext in this bean:

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

@Component
public class SpringUtils {

    public static ApplicationContext ctx;

    /**
     * Make Spring inject the application context
     * and save it on a static variable,
     * so that it can be accessed from any point in the application. 
     */
    @Autowired
    private void setApplicationContext(ApplicationContext applicationContext) {
        ctx = applicationContext;       
    }
}

You can put this code also in the main application class if you want.

Other classes can use it like this:

MyBean myBean = (MyBean)SpringUtils.ctx.getBean(MyBean.class);

In this way any bean can be obtained by any object in the application (also intantiated with new) and in a static way.

I was able to get it working with code only, i.e. no need to use keytool:

import com.netflix.config.DynamicBooleanProperty;
import com.netflix.config.DynamicIntProperty;
import com.netflix.config.DynamicPropertyFactory;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.ssl.SSLContexts;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.nio.client.CloseableHttpAsyncClient;
import org.apache.http.impl.nio.client.HttpAsyncClients;
import org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager;
import org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor;
import org.apache.http.impl.nio.reactor.IOReactorConfig;
import org.apache.http.nio.conn.NoopIOSessionStrategy;
import org.apache.http.nio.conn.SchemeIOSessionStrategy;
import org.apache.http.nio.conn.ssl.SSLIOSessionStrategy;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class Test
{
    private static final DynamicIntProperty MAX_TOTAL_CONNECTIONS = DynamicPropertyFactory.getInstance().getIntProperty("X.total.connections", 40);
    private static final DynamicIntProperty ROUTE_CONNECTIONS = DynamicPropertyFactory.getInstance().getIntProperty("X.total.connections", 40);
    private static final DynamicIntProperty CONNECT_TIMEOUT = DynamicPropertyFactory.getInstance().getIntProperty("X.connect.timeout", 60000);
    private static final DynamicIntProperty SOCKET_TIMEOUT = DynamicPropertyFactory.getInstance().getIntProperty("X.socket.timeout", -1);
    private static final DynamicIntProperty CONNECTION_REQUEST_TIMEOUT = DynamicPropertyFactory.getInstance().getIntProperty("X.connectionrequest.timeout", 60000);
    private static final DynamicBooleanProperty STALE_CONNECTION_CHECK = DynamicPropertyFactory.getInstance().getBooleanProperty("X.checkconnection", true);

    public static void main(String[] args) throws Exception
    {

        SSLContext sslcontext = SSLContexts.custom()
                .useTLS()
                .loadTrustMaterial(null, new TrustStrategy()
                {
                    @Override
                    public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException
                    {
                        return true;
                    }
                })
                .build();
        SSLIOSessionStrategy sslSessionStrategy = new SSLIOSessionStrategy(sslcontext, new AllowAll());

        Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder.<SchemeIOSessionStrategy>create()
                .register("http", NoopIOSessionStrategy.INSTANCE)
                .register("https", sslSessionStrategy)
                .build();

        DefaultConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(IOReactorConfig.DEFAULT);
        PoolingNHttpClientConnectionManager connectionManager = new PoolingNHttpClientConnectionManager(ioReactor, sessionStrategyRegistry);
        connectionManager.setMaxTotal(MAX_TOTAL_CONNECTIONS.get());
        connectionManager.setDefaultMaxPerRoute(ROUTE_CONNECTIONS.get());

        RequestConfig requestConfig = RequestConfig.custom()
                .setSocketTimeout(SOCKET_TIMEOUT.get())
                .setConnectTimeout(CONNECT_TIMEOUT.get())
                .setConnectionRequestTimeout(CONNECTION_REQUEST_TIMEOUT.get())
                .setStaleConnectionCheckEnabled(STALE_CONNECTION_CHECK.get())
                .build();

        CloseableHttpAsyncClient httpClient = HttpAsyncClients.custom()
                .setSSLStrategy(sslSessionStrategy)
                .setConnectionManager(connectionManager)
                .setDefaultRequestConfig(requestConfig)
                .build();

        httpClient.start();

        // use httpClient...
    }

    private static class AllowAll implements X509HostnameVerifier
    {
        @Override
        public void verify(String s, SSLSocket sslSocket) throws IOException
        {}

        @Override
        public void verify(String s, X509Certificate x509Certificate) throws SSLException {}

        @Override
        public void verify(String s, String[] strings, String[] strings2) throws SSLException
        {}

        @Override
        public boolean verify(String s, SSLSession sslSession)
        {
            return true;
        }
    }
}

Take a look at the Event Log API. Case a) (bluescreen, user cut the power cord or system hang) causes a note ('system did not shutdown correctly' or something like that) to be left in the 'System' event log the next time the system is rebooted properly. You should be able to access it programmatically using the above API (honestly, I've never used it but it should work).

This does a trick for me:

bash -c 'for (( I=100000000000000000000 ; I>=0 ; I++ )) ; do echo $(( I+I*I )) & echo $(( I*I-I )) & echo $(( I-I*I*I )) & echo $(( I+I*I*I )) ; done' &>/dev/null

and it uses nothing except bash.

How easy :)

date("F j, Y", strtotime( '-1 days' ) );

Example:

echo date("Y-m-j H:i:s", strtotime( '-1 days' ) ); // 2018-07-18 07:02:43

Output:

2018-07-17 07:02:43

Git automatically colors most of its output if you ask it to. You can get very specific about what you want colored and how; but to turn on all the default terminal coloring, set color.ui to true:

git config --global color.ui true

The warning is due to you attempting to add an integer (int shift = 3) to a character value. You can change the data type to char if you want to avoid that.

A char is 16 bits, an int is 32.

char shift = 3;
// ...
eMessage[i] = (message[i] + shift) % (char)letters.length;

As an aside, you can simplify the following:

char[] message = {'o', 'n', 'c', 'e', 'u', 'p', 'o', 'n', 'a', 't', 'i', 'm', 'e'}; 

To:

char[] message = "onceuponatime".toCharArray();

If you open a device using png(), bmp(), pdf() etc. as suggested by Andrie (the best answer), the windows with plots will not pop up open, just *.png, *bmp or *.pdf files will be created. This is convenient in massive calculations, since R can handle only limited number of graphic windows.

However, if you want to see the plots and also have them saved, call savePlot(filename, type) after the plots are drawn and the window containing them is active.

Here is something that might help. Use the root privileges. if you have .bin then simply add the execution permission to the bin file.

chmod a+x jdk*.bin

next step is to run the .bin file which is simply

./jdk*.bin in the location you want to install.

you are done.

Wait and notify method always called on object so whether it may be Thread object or simple object (which does not extends Thread class) Given Example will clear your all the doubts.

I have called wait and notify on class ObjB and that is the Thread class so we can say that wait and notify are called on any object.

public class ThreadA {
    public static void main(String[] args){
        ObjB b = new ObjB();
        Threadc c = new Threadc(b); 
        ThreadD d = new ThreadD(b);
        d.setPriority(5);
        c.setPriority(1);
        d.start();
        c.start();
    }
}

class ObjB {
    int total;
    int count(){
        for(int i=0; i<100 ; i++){
            total += i;
        }
        return total;
    }}


class Threadc extends Thread{
    ObjB b;
    Threadc(ObjB objB){
        b= objB;
    }
    int total;
    @Override
    public void run(){
        System.out.print("Thread C run method");
        synchronized(b){
            total = b.count();
            System.out.print("Thread C notified called ");
            b.notify();
        }
    }
}

class ThreadD extends Thread{
    ObjB b;
    ThreadD(ObjB objB){
        b= objB;
    }
    int total;
    @Override
    public void run(){
        System.out.print("Thread D run method");
        synchronized(b){
            System.out.println("Waiting for b to complete...");
            try {
                b.wait();
                System.out.print("Thread C B value is" + b.total);
                } 
                catch (InterruptedException e) {
                    e.printStackTrace();
                }
        }
    }
}

public static boolean isPalindrome(String in){
   if(in.equals(" ") || in.length() < 2 ) return true;
   if(in.charAt(0).equalsIgnoreCase(in.charAt(in.length-1))
      return isPalindrome(in.substring(1,in.length-2));
   else
      return false;
 }

Maybe you need something like this. Not tested, I'm not sure about string indexes, but it's a start point.

CMake is actually pretty good for this. The key part was everyone on the Windows side has to remember to run CMake before loading in the solution, and everyone on our Mac side would have to remember to run it before make.

The hardest part was as a Windows developer making sure your structural changes were in the cmakelist.txt file and not in the solution or project files as those changes would probably get lost and even if not lost would not get transferred over to the Mac side who also needed them, and the Mac guys would need to remember not to modify the make file for the same reasons.

It just requires a little thought and patience, but there will be mistakes at first. But if you are using continuous integration on both sides then these will get shook out early, and people will eventually get in the habit.

public static void main(String[] args) throws Exception {
    MessageDigest md = MessageDigest.getInstance("MD5");
    FileInputStream fis = new FileInputStream("c:\\apache\\cxf.jar");

    byte[] dataBytes = new byte[1024];

    int nread = 0;
    while ((nread = fis.read(dataBytes)) != -1) {
        md.update(dataBytes, 0, nread);
    };
    byte[] mdbytes = md.digest();
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < mdbytes.length; i++) {
        sb.append(Integer.toString((mdbytes[i] & 0xff) + 0x100, 16).substring(1));
    }
    System.out.println("Digest(in hex format):: " + sb.toString());
}

Or you may get more info http://www.asjava.com/core-java/java-md5-example/

SINGLE LINE: Adding a column with 'year-month'-paires: ('pd.to_datetime' first changes the column dtype to date-time before the operation)

df['yyyy-mm'] = pd.to_datetime(df['ArrivalDate']).dt.strftime('%Y-%m')?

Accordingly for an extra 'year' or 'month' column:

df['yyyy'] = pd.to_datetime(df['ArrivalDate']).dt.strftime('%Y')?
df['mm'] = pd.to_datetime(df['ArrivalDate']).dt.strftime('%m')?

someone before uses a similar solution to mine, but I find it easier to think as below:

> text<-"some text in a string" # we want to have only the last word "string" with 6 letter
> n<-5 #as the last character will be counted with nchar(), here we discount 1
> substr(x=text,start=nchar(text)-n,stop=nchar(text))

This will bring the last characters as desired.

how about this query hope it helps

DELETE FROM story_category LEFT JOIN (SELECT category.id FROM category) cat ON story_category.id = cat.id WHERE cat.id IS NULL

In Python 2.6+, you could use io.open() that is default (builtin open()) on Python 3:

import io

with io.open(filename, 'w', encoding=character_encoding) as file:
    file.write(unicode_text)

It might be more convenient if you need to write the text incrementally (you don't need to call unicode_text.encode(character_encoding) multiple times). Unlike codecs module, io module has a proper universal newlines support.

In Bash, you should get what you need like this:

#!/usr/bin/env bash

BASEDIR=$(dirname "$0")
echo "$BASEDIR"