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How to get an array of specific “key” in multidimensional array without looping
...ap(function ($ar) {return $ar['id'];}, $users);
Before(Technically php 4.0.6+), you must create an anonymous function with create_function instead:
$ids = array_map(create_function('$ar', 'return $ar["id"];'), $users);
s...
Check OS version in Swift?
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405
For iOS, try:
var systemVersion = UIDevice.current.systemVersion
For OS X, try:
var sy...
Adding System.Web.Script reference in class library
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answered Jul 20 '09 at 22:31
M4NM4N
88.4k4242 gold badges208208 silver badges253253 bronze badges
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Filtering a list based on a list of booleans
...rue, False, True, False]
>>> %timeit list(compress(list_a, fil))
100000 loops, best of 3: 2.58 us per loop
>>> %timeit [i for (i, v) in zip(list_a, fil) if v] #winner
100000 loops, best of 3: 1.98 us per loop
>>> list_a = [1, 2, 4, 6]*100
>>> fil = [True, False,...
Simulate airplane mode in iPhone Simulator
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answered Oct 23 '09 at 17:32
Rob NapierRob Napier
236k3333 gold badges370370 silver badges505505 bronze badges
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How to specify a port number in SQL Server connection string?
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260
Use a comma to specify a port number with SQL Server:
mycomputer.test.xxx.com,1234
It's not ne...
Does constexpr imply inline?
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140
Yes ([dcl.constexpr], §7.1.5/2 in the C++11 standard): "constexpr functions and constexpr const...
Linux: compute a single hash for a given folder & contents?
...d xargs. One possible command would be
find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum | sha1sum
And, finally, if you also need to take account of permissions and empty directories:
(find path/to/folder -type f -print0 | sort -z | xargs -0 sha1sum;
find path/to/folder \( -typ...
What is default session timeout in ASP.NET?
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107
It is 20 Minutes according to MSDN
From MSDN:
Optional TimeSpan attribute.
Specifies the numbe...
MySQL: @variable vs. variable. What's the difference?
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edited Jul 22 at 10:06
Community♦
111 silver badge
answered Jun 17 '09 at 23:39
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