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Array vs. Object efficiency in JavaScript
...myMap.get(1);
myMap.get(2);
You can use ES6 features today using a shim (https://github.com/es-shims/es6-shim).
Performance will vary depending on the browser and scenario. But here is one example where Map is most performant: https://jsperf.com/es6-map-vs-object-properties/2
REFERENCE
https:/...
Convert light frequency to RGB?
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Here's a detailed explanation of the entire conversion process: http://www.fourmilab.ch/documents/specrend/. Source code included!
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How do I run Redis on Windows?
...to install Redis under Windows
Download the latest Redis .msi file from
https://github.com/MSOpenTech/redis/releases
after installation. The redis service is installed, we can operate it from Service manager
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How do you configure Django for simple development and deployment?
...ther parts I have things like:
if LIVEHOST:
DEBUG = False
PREPEND_WWW = True
MEDIA_URL = 'http://static1.grsites.com/'
else:
DEBUG = True
PREPEND_WWW = False
MEDIA_URL = 'http://localhost:8000/static/'
and so on. A little bit less readable, but it works fine and saves havi...
Get image data url in JavaScript?
...) === dataURL); // false - not same data
});
<img id="myImage" src="https://dl.dropboxusercontent.com/s/4e90e48s5vtmfbd/aaa.png" crossOrigin="anonymous">
<img id="result">
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PostgreSQL: Difference between text and varchar (character varying)
...l varlena (variable length array).
Check this article from Depesz: http://www.depesz.com/index.php/2010/03/02/charx-vs-varcharx-vs-varchar-vs-text/
A couple of highlights:
To sum it all up:
char(n) – takes too much space when dealing with values shorter than n (pads them to n), and c...
How to draw polygons on an HTML5 canvas?
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from http://www.scienceprimer.com/drawing-regular-polygons-javascript-canvas:
The following code will draw a hexagon. Change the number of sides to create different regular polygons.
var ctx = document.getElementById('hexagon').get...
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
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I used the following psd that I derived from http://www.teehanlax.com/blog/?p=447
http://www.chrisandtennille.com/pictures/backbutton.psd
I then just created a custom UIView that I use in the customView property of the toolbar item.
Works well for me.
Edit: As pointed ou...
PHP Get name of current directory
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For EXAMPLE
Your Path = /home/serverID_name/www/your_route_Dir/
THIS_is_the_DIR_I_Want
A Soultion that WORKS:
$url = dirname(\__FILE__);
$array = explode('\\\',$url);
$count = count($array);
echo $array[$count-1];
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Can PHP cURL retrieve response headers AND body in a single request?
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One solution to this was posted in the PHP documentation comments: http://www.php.net/manual/en/function.curl-exec.php#80442
Code example:
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
// ...
$response = curl_exec($ch);
// Then, after your cu...