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How to define hash tables in Bash?
...ecuting your script directly, or execute script with bash script. (Not actually executing a Bash script with Bash does happen, and will be really confusing!)
You declare an associative array by doing:
declare -A animals
You can fill it up with elements using the normal array assignment operator....
What is lexical scope?
...
I understand them through examples. :)
First, lexical scope (also called static scope), in C-like syntax:
void fun()
{
int x = 5;
void fun2()
{
printf("%d", x);
}
}
Every inner level can access its outer levels.
There is another way, called dynamic scope used by ...
Resolve Type from Class Name in a Different Assembly
...ferences by AssemblyQualifiedName, without knowing from which assembly are all parts of generic type coming from:
public static Type ReconstructType(string assemblyQualifiedName, bool throwOnError = true, params Assembly[] referencedAssemblies)
{
foreach (Assembly asm in referencedA...
__attribute__ - C/C++ - 清泛网 - 专注C/C++及内核技术
__attribute____attribute__instructionsGNU C的一大特色（却不被初学者所知）就是__attribute__机制。__attribute__可以设置函数属性（Function Attribute）、变量属性（Variabl GNU C的一大特色（却不被初学者所知）就是__attribute__机制。__attribute__可...
iOS 7 - Status bar overlaps the view
...
Xcode 5 has iOS 6/7 Deltas which is specifically made to resolve this issue. In the storyboard, I moved my views 20 pixels down to look right on iOS 7 and in order to make it iOS 6 compatible, I changed Delta y to -20.
Since my storyboard is not using auto-layout,...
Benchmarking (python vs. c++ using BLAS) and (numpy)
...e python for my program, what could I do to increase the performance when calling BLAS or LAPACK routines?
Make sure that numpy uses optimized version of BLAS/LAPACK libraries on your system.
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How do I find which rpm package supplies a file I'm looking for?
...ly would come with the php-devel package. I guessed that yum would install the mod_files.sh file with the php-devel x86_64 5.1.6-23.2.el5_3 package, but the file appears to not to be installed on my filesystem.
...
Bash empty array expansion with `set -u`
...ad. Other patterns, such as ${arr[@]-} or ${arr[@]:0}, are not safe across all major versions of Bash.
As the table below shows, the only expansion that is reliable across all modern-ish Bash versions is ${arr[@]+"${arr[@]}"} (column +"). Of note, several other expansions fail in Bash 4.2, includin...
Check a radio button with javascript
...
Technically it's CSS selector syntax. jQuery just borrowed and extended it
– Tim Seguine
Jan 16 '14 at 16:10
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Received an invalid column length from the bcp client for colid 6
...
Specifically, if you have any columns that are VARCHAR smaller than 4, watch out for NULL in your data getting misinterpreted as the 4char string "NULL"
– CrazyPyro
Feb 11 at 8:13
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