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Prevent automatic browser scroll on refresh
...ing and then remove the bound event. This prevents subsequent page scrolls from borking the system.
$(document).ready(function() {
if (window.location.hash) {
//bind to scroll function
$(document).scroll( function() {
var hash = window.location.hash
var ...
Local variables in nested functions
...
The nested function looks up variables from the parent scope when executed, not when defined.
The function body is compiled, and the 'free' variables (not defined in the function itself by assignment), are verified, then bound as closure cells to the function, wi...
Two-way encryption: I need to store passwords that can be retrieved
...ption cycle takes about 1/2 second on my machine).
Now, as to point 3 from the first list, what that would give you is a function like this:
function makeKey($userKey, $serverKey, $userSuppliedKey) {
$key = hash_hmac('sha512', $userKey, $serverKey);
$key = hash_hmac('sha512', $key, $us...
How to dynamically change a web page's title?
...
I want to say hello from the future :) Things that happened recently:
Google now runs javascript that is on your website1
People now use things like React.js, Ember and Angular to run complex javascript tasks on the page and it's still getting...
Search and replace in bash using regular expressions
...
Thanks so much! Out of curiosity, why did you switch from a one line version (in your original answer) to a two-liner?
– Lanaru
Oct 24 '12 at 5:30
9
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Check play state of AVPlayer
...gBlock: or addBoundaryTimeObserverForTimes:queue:usingBlock:.
Example is from Apple:
// Assume a property: @property (retain) id playerObserver;
Float64 durationSeconds = CMTimeGetSeconds([<#An asset#> duration]);
CMTime firstThird = CMTimeMakeWithSeconds(durationSeconds/3.0, 1);
CMTime se...
grep without showing path/file:line
... grep and only return the matching line? i.e. The path/filename is omitted from the results.
3 Answers
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What's the difference between using CGFloat and float?
...a double on 64-bit systems. However, the decision to do that was inherited from OS X, where it was made based on the performance characteristics of early PowerPC CPUs. In other words, you should not think that float is for 32-bit CPUs and double is for 64-bit CPUs. (I believe, Apple's ARM processors...
How do you iterate through every file/directory recursively in standard C++?
...entation as close as possible to the standard.
An example, taken straight from the website:
bool find_file( const path & dir_path, // in this directory,
const std::string & file_name, // search for this name,
path & path_found ) // pla...
ipython: print complete history (not just current session)
...%hist or %history to print recent history, but this only prints history from current session.
3 Answers
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