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What is declarative programming? [closed]
...
Aquarius_Girl
16.9k5353 gold badges174174 silver badges329329 bronze badges
answered Sep 24 '08 at 20:17
1800 INFORMATION1800 INFOR...
Differences between distribute, distutils, setuptools and distutils2?
...swers to this question are several years out-of-date. When you come across advice on Python packaging issues, remember to look at the date of publication, and don't trust out-of-date information.
The Python Packaging User Guide is worth a read. Every page has a "last updated" date displayed, so you...
What do the python file extensions, .pyc .pyd .pyo stand for?
...ou know what you're doing.
A program doesn't run any faster when it is read from a ‘.pyc’ or ‘.pyo’ file than when it is read from a ‘.py’ file; the only thing that's faster about ‘.pyc’ or ‘.pyo’ files is the speed with which they are loaded.
When a script is run by giving i...
How to remove all callbacks from a Handler?
...
Alex Karshin
10.1k1111 gold badges4141 silver badges5656 bronze badges
answered Apr 13 '12 at 17:38
josh527josh527
...
Scala list concatenation, ::: vs ++
...list
list1 ::: list2 // concatenation of two lists
list match {
case head :: tail => "non-empty"
case Nil => "empty"
}
Of course, Scala evolved other collections, in an ad-hoc manner. When 2.8 came out, the collections were redesigned for maximum code reuse and consistent API,...
How to use WinForms progress bar?
...ndWorker.ReportProgress() to see how to report progress back to the UI thread.
For example:
private void Calculate(int i)
{
double pow = Math.Pow(i, i);
}
private void button1_Click(object sender, EventArgs e)
{
progressBar1.Maximum = 100;
progressBar1.Step = 1;
progressBar1.Value...
Should functions return null or an empty object?
... whereas returning null clearly indicates that nothing has been returned.
Additionally, returning a null will result in a null exception if you attempt to access members in the object, which can be useful for highlighting buggy code - attempting to access a member of nothing makes no sense. Accessi...
Notification click: activity already open
...ick them. I want that, if I click the notification and the activity is already opened, it's not started again, but just brought to front.
...
How to loop through array in jQuery?
...= 0; i < substr.length; ++i) {
// do something with `substr[i]`
}
Advantages: Straight-forward, no dependency on jQuery, easy to understand, no issues with preserving the meaning of this within the body of the loop, no unnecessary overhead of function calls (e.g., in theory faster, though i...
How to rsync only a specific list of files?
...r a specific list of files, putting them directly on the command line instead:
# rsync -avP -e ssh `cat deploy/rsync_include.txt` root@0.0.0.0:/var/www/
This is assuming, however, that your list isn't so long that the command line length will be a problem and that the rsync_include.txt file conta...