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How do I prevent an Android device from going to sleep programmatically?
...ng wake locks. Ensure that you always release() the lock when you're done with it (or not in the foreground). Otherwise your app can potentially cause some serious battery drain and CPU usage.
The documentation also contains a useful page that describes different approaches to keeping a device awak...
How many String objects will be created when using a plus sign?
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Surprisingly, it depends.
If you do this in a method:
void Foo() {
String one = "1";
String two = "2";
String result = one + two + "34";
Console.Out.WriteLine(result);
}
then the compiler seems to emit the code using St...
How can I select item with class within a DIV?
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edited Feb 14 '19 at 19:46
Rakib
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How to use the CancellationToken property?
...lationRequested)
{
return;
}
Console.Write("345");
}
}
That's it. You always need to handle cancellation by yourself - exit from method when it is appropriate time to exit (so that your work and data is in consistent state)
UPDATE: I prefer not writing whil...
Directory-tree listing in Python
... print(os.path.join(dirname, filename))
# Advanced usage:
# editing the 'dirnames' list will stop os.walk() from recursing into there.
if '.git' in dirnames:
# don't go into any .git directories.
dirnames.remove('.git')
...
How can I show line numbers in Eclipse?
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Window → Preferences → General → Editors → Text Editors → Show line numbers.
Edit: I wrote this long ago but as @ArtOfWarfar and @voidstate mentioned you can now simply:
Right click the gutter and select "Show Line Numbers":
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Javascript set img src
I am probably missing something simple but it's quite annoying when everything you read doesn't work. I have images which may be duplicated many times over the course of a dynamically generated page. So the obvious thing to do is to preload it and use that one variable as the source all the time.
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Does Ruby regular expression have a not match operator like “!~” in Perl?
...whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part.
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How to fade to display: inline-block
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You could use jQuery's animate function to change the opacity yourself, leaving the display unaffected.
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What is the difference between a User Control Library and a Custom Control Library?
... custom controls extend one of the WPF control base classes and provide additional functionality through code so all the added logic and representation must be implemented inside the code.
A user control is technically a normal content control which you can extend in some parts in the code but usu...