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Random color generator
...#colorpad").css("background-color", getRandomColor());
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="colorpad" style="width:300px;height:300px;background-color:#000">
</div>
<button onclick="setRandomColor()">...
How do I check if an object has a specific property in JavaScript?
...roperty check to typeof this[property] or, even worse, x.key will give you completely misleading results.
It depends on what you're looking for. If you want to know if an object physically contains a property (and it is not coming from somewhere up on the prototype chain) then object.hasOwnProperty...
Is there a way to instantiate objects from a string holding their class name?
...
boost::functional has a factory template which is quite flexible: http://www.boost.org/doc/libs/1_54_0/libs/functional/factory/doc/html/index.html
My preference though is to generate wrapper classes which hide the mapping and object creation mechanism. The common scenario I encounter is th...
Rank function in MySQL
...) part allows the variable initialization without requiring a separate SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3...
How do I create an immutable Class?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
What is the instanceof operator in JavaScript?
...ifferent type throughout its life span. Code example: jsfiddle.net/sikusikucom/znSPv
– moey
Oct 18 '12 at 17:18
@Siku-...
ng-model for `` (with directive DEMO)
... your file encoded ad a data-uri (base64).
Check out a working demo here:
http://plnkr.co/CMiHKv2BEidM9SShm9Vv
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Ruby convert Object to Hash
...nk by default root will be false. For more info refer official ruby guide
http://api.rubyonrails.org/classes/ActiveModel/Serializers/JSON.html#method-i-as_json
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In Python, how do I read the exif data for an image?
...ow. It is a fork of PIL, which is still being developed, and has a python3 compatible version
– Mzzl
Jan 15 '14 at 9:54
1
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How is a CRC32 checksum calculated?
Maybe I'm just not seeing it, but CRC32 seems either needlessly complicated, or insufficiently explained anywhere I could find on the web.
...