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not None test in Python [duplicate]
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if val is not None:
# ...
is the Pythonic idiom for testing that a variable is not set to None. This idiom has particular uses in the case of declaring keyword functions with default parameters. is tests identity in Python. Because there is one and only one instance of Non...
Use underscore inside Angular controllers
...underscore has already been loaded on the page
}]);
And then you can ask for the _ in your app's module:
// Declare it as a dependency of your module
var app = angular.module('app', ['underscore']);
// And then inject it where you need it
app.controller('Ctrl', function($scope, _) {
// do stuf...
Return a value if no rows are found in Microsoft tSQL
... returned. I'd prefer that false (0) is returned in that scenario. Looking for the simplest method to account for no records.
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android: move a view on touch move (ACTION_MOVE)
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They don't have to be final. I made them final just for avoid reassign these variables.
– Vyacheslav Shylkin
Jul 8 '13 at 9:25
1
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Batch File; List files in directory, only filenames?
...tory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names and exclude anything else.
...
Literal suffix for byte in .NET?
...ould write byte x = 5 , but that's a bit inconsequential if you use var for local variables.
4 Answers
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Passing argument to alias in bash [duplicate]
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To undefine a function:
unset -f foo
To see the type and definition (for each defined alias, keyword, function, builtin or executable file):
type -a foo
Or type only (for the highest precedence occurrence):
type -t foo
...
How to import a Python class that is in a directory above?
...from within pkg.subpkg1 you will import pkg.subpkg2.mod. The specification for relative imports is contained within PEP 328.
PEP 328 deals with absolute/relative imports.
share
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improve this answ...
How to download a file from a URL in C#?
... Though I think that WebClient seems like a much more straightforward and simple solution.
– StormsEngineering
Oct 1 '19 at 23:17
3
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define() vs. const
...ine() accepts any expression as name. This allows to do things like this:
for ($i = 0; $i < 32; ++$i) {
define('BIT_' . $i, 1 << $i);
}
consts are always case sensitive, whereas define() allows you to define case insensitive constants by passing true as the third argument (Note: defin...