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What does -D_XOPEN_SOURCE do/mean?
...e definitions for some extra functions that are defined in the X/Open and POSIX standards.
This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as Windows.
The numbers refer to different versions of the stan...
How do I get bash completion to work with aliases?
...
As stated in the comments above,
complete -o default -o nospace -F _git_checkout gco
will no longer work. However, there's a __git_complete function in git-completion.bash which can be used to set up completion for aliases like so:
__git_complete gco _git_checkout
...
static files with express.js
... this is the equivalent in python of __file__ which you use with os.path.dirname(os.path.realpath(__file__))
– Abdelouahab
Nov 12 '14 at 1:28
...
Using numpad in Vi (Vim) via PuTTY
...hen $TERM=xterm
imap <Esc>Oq 1
imap <Esc>Or 2
imap <Esc>Os 3
imap <Esc>Ot 4
imap <Esc>Ou 5
imap <Esc>Ov 6
imap <Esc>Ow 7
imap <Esc>Ox 8
imap <Esc>Oy 9
imap <Esc>Op 0
imap <Esc>On .
imap <Esc>OR *
imap <Esc>OQ /
imap <E...
How big can a MySQL database get before performance starts to degrade
At what point does a MySQL database start to lose performance?
15 Answers
15
...
ImportError: No module named requests
...e with the default python installation), so you will have to install it:
OSX/Linux
Use $ sudo pip install requests (or pip3 install requests for python3) if you have pip installed. If pip is installed but not in your path you can use python -m pip install requests (or python3 -m pip install requ...
How do I determine the size of my array in C?
...( sizeof(intArray) / sizeof(intArray[0]) ));
}
Output (in a 64-bit Linux OS):
sizeof of array: 28
sizeof of parameter: 8
Length of array: 7
Length of parameter: 2
Output (in a 32-bit windows OS):
sizeof of array: 28
sizeof of parameter: 4
Length of array: 7
Length of parameter: 1
...
Timeout a command in bash without unnecessary delay
...cess is still alive.
declare -i interval=DEFAULT_INTERVAL
# Delay between posting the SIGTERM signal and destroying the process by SIGKILL.
declare -i delay=DEFAULT_DELAY
function printUsage() {
cat <<EOF
Synopsis
$scriptName [-t timeout] [-i interval] [-d delay] command
Execute ...
MySQL maximum memory usage
I would like to know how it is possible to set an upper limit on the amount of memory MySQL uses on a Linux server.
6 Answ...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...?
I wrote the answer below in 2009; in 2011, Apple added NSOrderedSet to iOS 5 and Mac OS X 10.7. What had been an algorithm is now two lines of code:
NSOrderedSet *orderedSet = [NSOrderedSet orderedSetWithArray:yourArray];
NSArray *arrayWithoutDuplicates = [orderedSet array];
If you are worri...