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Git for beginners: The definitive practical guide
...lder in the current directory.
To make a new project, run git init with an additional argument (the name of the directory to be created):
git init project002
(This is equivalent to: mkdir project002 && cd project002 && git init)
To check if the current current path is within a git ...
Best practices for API versioning? [closed]
.... It is sufficient to correctly define all the resource end-points and the addressing scheme of every resource and resource instance.
Over time you may need to add new resources and new attributes to each particular resource, but the method that API users follow to access a particular resources sho...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...(data) is slower as expected, and is ~approx 5x slower than a new property adding.
Nulling the value array[index] = null is faster than deleting it delete array[index] (undefined) in an array by ~approx 4x++ faster.
Surprisingly Nulling a value in an object is obj[attr] = null ~approx 2x slower than...
Rotated elements in CSS that affect their parent's height correctly
....rotation-wrapper-outer {
display: table;
}
.rotation-wrapper-inner {
padding: 50% 0;
height: 0;
}
.element-to-rotate {
display: block;
transform-origin: top left;
/* Note: for a CLOCKWISE rotation, use the commented-out
transform instead of this one. */
transform: rotate(-90deg) ...
urlencode vs rawurlencode?
...the query string to follow form-encoding style of spaces encoded as + instead of %20 (in which case you need urlencode).
rawurlencode follows RFC 1738 prior to PHP 5.3.0 and RFC 3986 afterwards (see http://us2.php.net/manual/en/function.rawurlencode.php)
Returns a string in which all non-alphan...
.prop() vs .attr()
...1 November 2012
My original answer applies specifically to jQuery 1.6. My advice remains the same but jQuery 1.6.1 changed things slightly: in the face of the predicted pile of broken websites, the jQuery team reverted attr() to something close to (but not exactly the same as) its old behaviour for...
Why is processing a sorted array faster than processing an unsorted array?
...im of branch prediction fail.
What is Branch Prediction?
Consider a railroad junction:
Image by Mecanismo, via Wikimedia Commons. Used under the CC-By-SA 3.0 license.
Now for the sake of argument, suppose this is back in the 1800s - before long distance or radio communication.
You are the operator...
What are the mathematical/computational principles behind this game?
...es meet in exactly one point (this is a bit different from Euclid).
Now, add "finite" into the soup and you have the question:
Can we have a geometry with just 2 points? With 3 points? With 4? With 7?
There are still open questions regarding this problem but we do know this:
If there are geome...
How to install GCC piece by piece with GMP, MPFR, MPC, ELF, without shared libraries?
...GCC infrastructure:
ftp://gcc.gnu.org/pub/gcc/infrastructure/
Put downloads in a temp directory (you can use whatever directory you want).
/opt/downloads
Build the infrastructure in a temp directory that is different than the downloads directory or its subdirectories:
/tmp/gcc
Configure the...
Algorithm for creating a school timetable
...cally impractical to consider enumerating all possible combinations. Instead we need to choose an approach which visits a subset of the problem/solution spaces.
- Genetic Algorithms, cited in another answer is (or, IMHO, seems) well equipped to perform this kind of semi-guided search (The problem b...