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How to add elements to an empty array in PHP?
...ration, but it also doesn't impose the performance overhead of a function call, which array_push() would. Edit: But, great answer. Effectively the same, and majority of uses won't even notice a performance difference, but helps to know those nuances.
– Mattygabe
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Big O, how do you calculate/approximate it?
..., but be warned that this topic takes my students a couple of months to finally grasp. You can find more information on the Chapter 2 of the Data Structures and Algorithms in Java book.
There is no mechanical procedure that can be used to get the BigOh.
As a "cookbook", to obtain the BigOh from ...
JavaScript variables declare outside or inside loop?
In AS3 I believe you should initialise all variables outside loops for increased performance. Is this the case with JavaScript as well? Which is better / faster / best-practice?
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Disabling implicit animations in -[CALayer setNeedsDisplayInRect:]
...like you can specify any key you could use in setValue:forKey: method, actually specifying complex key paths like bounds.size.
– pqnet
Apr 8 '12 at 17:41
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Creating hard and soft links using PowerShell
... Worked also on a Windows10 system.
– FooF
Feb 21 '19 at 4:09
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What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
...header Origin: http://foo.com , and bar must respond with Access-Control-Allow-Origin: http://foo.com .
3 Answers
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Multiline string literal in C#
...nt of a string to form a verbatim string literal:
string query = @"SELECT foo, bar
FROM table
WHERE id = 42";
You also do not have to escape special characters when you use this method, except for double quotes as shown in Jon Skeet's answer.
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“loop:” in Java code. What is this, and why does it compile?
...s the OP might not be familiar with the goto/label concept, that it's generally regarded as a bad practice, except in very particular situations (for instance, for shortcutting multiple nested loops).
– haylem
Sep 29 '10 at 13:21
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Loop through an array in JavaScript
...ns
Too verbose
Imperative
Easy to have off-by-one errors (sometimes also called a fence post error)
2. Array.prototype.forEach
The ES5 specification introduced a lot of beneficial array methods, one of them, the Array.prototype.forEach and it gives us a concise way to iterate over an array:
co...
How to call a function from a string stored in a variable?
...ble to pass arguments using both of these methods as so
$function_name = 'foobar';
$function_name(arg1, arg2);
call_user_func_array($function_name, array(arg1, arg2));
If the function you are calling belongs to an object you can still use either of these
$object->$function_name(arg1, arg2);...