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How to change options of with jQuery?
...ents with index greater than zero and remove them:
$('#selectId option:gt(0)').remove(); // remove all options, but not the first
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How does facebook, gmail send the real time notification?
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The way Facebook does this is pretty interesting.
A common method of doing such notifications ...
CSS /JS to prevent dragging of ghost image?
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You can set the draggable attribute to false in either the markup or JavaScript code.
// A...
Convert string to symbol-able in ruby
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edited Feb 4 '15 at 10:16
Jake Berger
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How can I use threading in Python?
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Since this question was asked in 2010, there has been real simplification in how to do simple multithreading with Python with map and pool.
The code below comes from an article/blog post that you should definitely check out (no affiliation) - Parallelism in o...
Difference between freeze and seal
...ozen objects
Safari: sealed or frozen objects enumerate 92% slower (as of 2014)
Tests: Sealed objects, Frozen objects.
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Computed read-only property vs function in Swift
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Return a `struct` from a function in C
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You can return a structure from a function (or use the = operator) without any problems. It's ...
What does O(log n) mean exactly?
...ed at the office, and every entry in each of the phone books has an extra "0" at the end of the phone number. Take some white-out and remove each zero.
O(n · n!): We're ready to load the phonebooks onto the shipping dock. Unfortunately, the robot that was supposed to load the books has gone haywire...