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jQuery .hasClass() vs .is()
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Both should be pretty close in terms of performance but $('#foo').hasClass('bar'); seems more readable and semantically correct to me.
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What Product Flavor does Android Studio build by default in build.gradle?
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Yes, there is a way:
android {
productFlavors {
foo {
isDefault true
}
}
}
And otherwise variants with the debug build type are favoured.
It was added in Android Studio 3.5, see feature request:
"Included in Android Gradle Plugin 3.5.0-alpha08 and...
Redirect stdout to a file in Python?
...se shell redirection when executing (same on Windows and Linux):
$ python foo.py > file
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private final static attribute vs private final attribute
...use:
private static final int NUMBER = 10;
Why? This reduces the memory footprint per instance. It possibly is also favourable for cache hits. And it just makes sense: static should be used for things that are shared across all instances (a.k.a. objects) of a certain type (a.k.a. class).
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PHP Error handling: die() Vs trigger_error() Vs throw Exception
...while ($row = gather_data()) {
$db->query('INSERT INTO `table` (`foo`,`bar`) VALUES(?,?)', ...);
}
$db->query('COMMIT');
} catch(Exception $e) {
$db->query('ROLLBACK');
}
Here, if gather_data() just plain croaked (using E_USER_ERROR or die()) there's a chance, previous ...
An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode
...and, authorizing which users can access a .ASPX page such as a request for Foo.aspx is trivial even in IIS 6/Classic because IIS always hands those requests off to the ASP.NET pipeline. In Classic mode ASP.NET does not know what it hasn't been told and there is a lot that IIS 6/Classic may not be te...
Search for “does-not-contain” on a DataFrame in pandas
...df["col1"].str.contains('this'|'that')==False and df["col2"].str.contains('foo'|'bar')==True]? Thanks!
– tommy.carstensen
May 24 '17 at 10:54
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When should you use 'friend' in C++?
...en they are cumbersome (cpp-level concrete classes/masked typedefs) or not foolproof (comments or function name conventions).
Onto the answer;
The friend specifier allows the designated class access to protected data or functionality within the class making the friend statement. For example in th...
Case insensitive searching in Oracle
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@SaqibAli Arbitrary LIKE expressions (e.g. WHERE foo LIKE '%abc%') are already slow enough if they can't be indexed, I don't think it's specifically related to case sensitiveness.
– Álvaro González
Jul 30 '15 at 6:19
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Default value in Go's method
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What a pain. I wish it was: func Concat1(a string = 'foo', b int = 10) string { like in most other modern languages... It would reduce any of the given examples pretty much to one line of code.
– Rotareti
Jul 30 '17 at 7:50
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