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Hidden Features of PHP? [closed]
...n't really call it hidden... If you've ever googled for method parameters, etc, you would end up at php.net.
– John Bubriski♦
Mar 23 '09 at 17:04
27
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Visual Studio 64 bit?
... for the built in version and standalone. You have to target "x86" or "Any CPU" so that you can see your xaml, then retarget 64 so you can run and debug. Ditto edit and continue. The list goes on. It is so totally not awesome, I do not have words fit to print.
– Dirk Bester
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Why is arr = [] faster than arr = new Array?
...ntext which may contain the "arguments" object, locally defined variables, etc. If we cannot find it in the Activation object, we begin looking up the scope chain until we reach the global scope. If nothing is found, we throw a ReferenceError.
Once we've located the variable declaration, we invoke...
Why is this F# code so slow?
...llowing numbers:
> levenshtein str ("foo" + str);;
Real: 00:00:03.938, CPU: 00:00:03.900, GC gen0: 275, gen1: 1, gen2: 0
val it : int = 3
> levenshtein_inlined str ("foo" + str);;
Real: 00:00:00.068, CPU: 00:00:00.078, GC gen0: 0, gen1: 0, gen2: 0
val it : int = 3
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Why use a prime number in hashCode?
...le this might be faster then a multiplication (it probaly isn't for modern cpu processors by the way), there are more important factors to consider when choosing a multiplication for a haschcode (equal distribution of input values to buckets comes to mind)
– Grizzly
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How is Docker different from a virtual machine?
...s it manage to provide a full filesystem, isolated networking environment, etc. without being as heavy?
19 Answers
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How do I generate a random int number?
... is generated using sound, mouse click, and keyboard timings, thermal temp etc. Below goes the code for the same.
using (RNGCryptoServiceProvider rg = new RNGCryptoServiceProvider())
{
byte[] rno = new byte[5];
rg.GetBytes(rno);
int randomvalue = BitConverter.ToInt32(rno, 0);
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Oracle Differences between NVL and Coalesce
...-
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
-----------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 2 | 52 | 2 (0)| 00:00:01 |
| 1 | CONCATENATION ...
What is a deadlock?
...ries may include memory, printers, CPUs, open files, tape drives, CD-ROMS, etc.
Deadlock : Deadlock is a situation or condition when two or more processes are holding some resources and trying to acquire some more resources, and they can not release the resources until they finish there execution.
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Sending a message to nil in Objective-C
...ically zeroed. So design you API so that it can respond to 0/nil/NIL/NULL etc.
– Cthutu
Mar 21 '12 at 18:28
1
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