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Convert array to JSON
...
Script for backward-compatibility:
https://github.com/douglascrockford/JSON-js/blob/master/json2.js
And call:
var myJsonString = JSON.stringify(yourArray);
Note: The JSON object is now part of most modern web browsers (IE 8 & above). See caniuse for fu...
How do I vertically align text in a div?
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Vertical Centering in CSS
http://www.jakpsatweb.cz/css/css-vertical-center-solution.html
Article summary:
For a CSS 2 browser, one can use display:table/display:table-cell to center content.
A sample is also available at JSFiddle:
div { border:1px s...
How to document Ruby code?
...that YARD is still not included in Ruby. (By the way YARD homepage accepts HTTPS.)
– Franklin Yu
Oct 25 '17 at 15:30
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How do I make an HTML button not reload the page
...ult();
alert('page did not reload');
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<form id='submit-form'>
<button type='submit'>submit</button>
</form>
...
When is it practical to use Depth-First Search (DFS) vs Breadth-First Search (BFS)? [closed]
...
Nice Explanation from
http://www.programmerinterview.com/index.php/data-structures/dfs-vs-bfs/
An example of BFS
Here’s an example of what a BFS would look like. This is something like Level Order Tree Traversal where we will use QUEUE with ITERA...
What is getattr() exactly and how do I use it?
...see that (by default, at least) it chops up a request's URL, like:
http://www.example.com/customers/list
into "customers" and "list". Then it searches for a controller class named CustomerController. Assuming it finds the class, it creates an instance of the class and then uses getattr to get i...
Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
...pression are huge, it's definitely worth the trade off.
Taken from http://www.cdnplanet.com/blog/gzip-nginx-cloudfront/
Edit
Serving content that is gzipped on the fly through Amazon cloud front is dangerous and probably shouldn't be done. Basically if your webserver is gzipping the content, it w...
Batch file include external file for variables
...so be used to share variables among multiple batch files.
Source: http://www.incodesystems.com/products/batchfi1.htm
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How to get list of all installed packages along with version in composer?
...omposer show -i -t
-i short for --installed.
-t short for --tree.
ref: https://getcomposer.org/doc/03-cli.md#show
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How to calculate dp from pixels in android programmatically [duplicate]
...sed to convert px->dp, for that you must use the method described here: https://stackoverflow.com/a/17880012/504611 (quoted below for convenience).
Without Context object, elegant static methods:
public static int dpToPx(int dp) {
return (int) (dp * Resources.getSystem().getDisplayMetric...