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What does ':' (colon) do in JavaScript?
I'm learning JavaScript and while browsing through the jQuery library I see : (colon) being used a lot. What is this used for in JavaScript?
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Check if current directory is a Git repository
...at it still returns output to STDERR if you are outside of a git repo (and does not print 'false').
Taken from this answer: https://stackoverflow.com/a/2044714/12983
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Best implementation for hashCode method for a collection
...ill be unique. When using non-prime numbers, you cannot guarantee this. It does not matter which prime nummer you choose, there is nothing magical about the number 37 (too bad 42 isn't a prime number, eh?)
– Simon Forsberg
Feb 15 '13 at 13:58
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REST authentication and exposing the API key
...t point someone can see the API key. If I'm understanding that wrong, how does the API key get sent with the request if its not embedded into the client script?
– tjans
Mar 29 '11 at 15:14
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Why does installing Nokogiri on Mac OS fail with libiconv is missing?
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I had the same issue. Unfortunately the "Installing Nokogiri" doesn't cover Iconv issues. Here's how I resolved the issue.
First install homebrew, it'll make your life easier. If you already have it installed, be sure to grab the latest formulae by updating like so:
brew update
Not...
SQL ON DELETE CASCADE, Which Way Does the Deletion Occur?
...stackoverflow.com%2fquestions%2f13444859%2fsql-on-delete-cascade-which-way-does-the-deletion-occur%23new-answer', 'question_page');
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Realistic usage of the C99 'restrict' keyword?
...R1 ← *x" is no longer needed.
load R2 ← *b
add R2 += R1
set R2 → *b
Does GCC really do it?
GCC 4.8 Linux x86-64:
gcc -g -std=c99 -O0 -c main.c
objdump -S main.o
With -O0, they are the same.
With -O3:
void f(int *a, int *b, int *x) {
*a += *x;
0: 8b 02 mov (%rdx)...
What does $1 [QSA,L] mean in my .htaccess file?
...ost-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f12551382%2fwhat-does-1-qsa-l-mean-in-my-htaccess-file%23new-answer', 'question_page');
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What is the reason for performing a double fork when creating a daemon?
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@tonix: simply forking does not create a session leader. That is done by setsid(). So, the first forked process becomes a session leader after calling setsid() and then we fork again so that the final, double-forked process is no longer a session l...
How does database indexing work? [closed]
...ber of blocks that the table spans. If that field is a non-key field (i.e. doesn’t contain unique entries) then the entire tablespace must be searched at N block accesses.
Whereas with a sorted field, a Binary Search may be used, which has log2 N block accesses. Also since the data is sorted give...