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How to get an array of specific “key” in multidimensional array without looping
... must support php > 5.5, the following alternatives exist:
Since php 5.3, you can use array_map with an anonymous function, like this:
$ids = array_map(function ($ar) {return $ar['id'];}, $users);
Before(Technically php 4.0.6+), you must create an anonymous function with create_function inste...
How to declare std::unique_ptr and what is the use of it?
...accepts a T*).
In the first example:
unique_ptr<int> uptr (new int(3));
The pointer is the result of a new expression, while in the second example:
unique_ptr<double> uptr2 (pd);
The pointer is stored in the pd variable.
Conceptually, nothing changes (you are constructing a uniqu...
Is there any way to use a numeric type as an object key?
...a string via the toString method.
> var foo = {}
undefined
> foo[23213] = 'swag'
'swag'
> foo
{ '23213': 'swag' }
> typeof(Object.keys(foo)[0])
'string'
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What is “(program)” in Chrome debugger’s profiler?
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What does Bump Version stand for?
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answered Nov 15 '10 at 3:29
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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Mercurial move changes to a new branch
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As suggested by Mark, the MqExtension is one solution for you problem. IMHO a simpler workflow i...
Removing duplicates from a list of lists
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>>> k = [[1, 2], [4], [5, 6, 2], [1, 2], [3], [4]]
>>> import itertools
>>> k.sort()
>>> list(k for k,_ in itertools.groupby(k))
[[1, 2], [3], [4], [5, 6, 2]]
itertools often offers the fastest and most powerful solutions to this kind of ...
Should I use document.createDocumentFragment or document.createElement
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edited Aug 3 '14 at 13:39
answered Aug 3 '10 at 14:04
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When to use os.name, sys.platform, or platform.system?
As far as I know, Python has 3 ways of finding out what operating system is running on:
5 Answers
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