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What is the most efficient way to deep clone an object in JavaScript?
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Structured Cloning
The HTML standard includes an internal structured cloning/serialization algorithm that can create deep clones of objects. It is still limited to certain built-in types, but in addition to the few types supported by JSON it also s...
Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
... bits and pieces of IOStreams history: www2.research.att.com/~bs/01chinese.html (this link seems to be temporarily broken right now, but you can try Google's page cache)
– stakx - no longer contributing
May 2 '10 at 11:48
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Use CSS3 transitions with gradient backgrounds
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Update
http://codersblock.blogspot.fr/2013/12/gradient-animation-trick.html?showComment=1390287622614
Here is a quick example:
Link state
.btn {
font-family: "Helvetica Neue", Arial, sans-serif;
font-size: 12px;
font-weight: 300;
position: relative;
display: inline-block;
text-de...
PHP: Convert any string to UTF-8 without knowing the original character set, or at least try
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Interesting read: http://kore-nordmann.de/blog/php_charset_encoding_FAQ.html#how-do-i-determine-the-charset-encoding-of-a-string
There are other ways of ensuring the correct charset though. Concerning forms, try to enforce UTF-8 as much as possible (check out snowman to make sure yout submission...
Why does z-index not work?
...in the stacking order of the parent's stacking context.
So with following html
div { border: 2px solid #000; width: 100px; height: 30px; margin: 10px; position: relative; background-color: #FFF; }
#el3 { background-color: #F0F; width: 100px; height: 60px; top: -50px; }
<div id="el1" style...
Rails formatting date
...he string representation of the date. (http://ruby-doc.org/core-2.2.1/Time.html#method-i-strftime).
From APIdock:
%Y%m%d => 20071119 Calendar date (basic)
%F => 2007-11-19 Calendar date (extended)
%Y-%m => 2007-11 ...
$.ajax - dataType
...telling jQuery what kind of response to expect.
Expecting JSON, or XML, or HTML, etc. The default is for jQuery to try and figure it out.
The $.ajax() documentation has full descriptions of these as well.
In your particular case, the first is asking for the response to be in UTF-8, the second d...
How to get a pixel's x,y coordinate color from an image?
... @pst said above. Check out this answer for a good example:
getPixel from HTML Canvas?
Some code that would serve you specifically as well:
var imgd = context.getImageData(x, y, width, height);
var pix = imgd.data;
for (var i = 0, n = pix.length; i < n; i += 4) {
console.log pix[i+3]
}
Th...
Sending POST data in Android
...ces:
https://developer.android.com/reference/java/net/HttpURLConnection.html
How to add parameters to HttpURLConnection using POST using NameValuePair
Older Answer
Note: This solution is outdated. It only works on Android devices up to 5.1. Android 6.0 and above do not include the Apache http ...
Request is not available in this context
...http://logging.apache.org/log4net/release/sdk/log4net.Layout.PatternLayout.html
// So here is some custom retrieval logic for it, so bad, especialy since I
// tend to think this is a missed copy/paste in that documentation.
// Indeed, we can find by inspection in ...