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Data structure: insert, remove, contains, get random element, all at O(1)
...It implements Add, Remove, Contains, and Random along with other standard .NET interfaces. Not that you would ever need to implement it in such detail during an interview but it's nice to have a concrete solution to look at...
using System;
using System.Collections;
using System.Collections.Generi...
What is the fastest method for selecting descendant elements in jQuery?
...vel children.
Based on Anurag's revised speed tests here: http://jsfiddle.net/QLV9y/1/
Speed test: (More is Better)
On Chrome, Method 3 is the best then method 1/2 and then 4/5
On Firefox, Method 3 is still best then method 1/2 and then 4/5
On Opera, Method 3 is still best then method 4/5 a...
How are software license keys generated?
...
CD-Keys aren't much of a security for any non-networked stuff, so technically they don't need to be securely generated. If you're on .net, you can almost go with Guid.NewGuid().
Their main use nowadays is for the Multiplayer component, where a server can verify the CD K...
Git: what is a dangling commit/blob and where do they come from?
... by default leave 2 weeks prior to the runtime of this command of a safety net. It is in fact encouraged to run the GC occasionally to help ensure performant use of your git repository. Like anything, though, you should understand what it is doing before destroying those things that may be importa...
Is ServiceLocator an anti-pattern?
...how they resolve the services internally.
But a much better example is ASP.NET MVC and WebApi. What do you think makes the dependency injection possible in the controllers? That's right -- service location.
Your questions
But wait a second, if we were using DI approach, we would introduce a
depende...
How to update SQLAlchemy row entry?
... corruption (e.g. two clients attempt to increment at the same time with a net result of only one increment instead of two). I assume it's possible to do the incrementing in Python if you set locks or bump up the isolation level, but why bother if you don't have to?
A caveat
If you are going to i...
fastest MD5 Implementation in JavaScript
... A demonstration of this md5 library can be found here: jsfiddle.net/v28gq
– Anderson Green
Jan 21 '13 at 13:10
16
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Is using Random and OrderBy a good shuffle algorithm?
...er.
In that answer, the array is shuffled, then returned using yield. The net result is that the array is kept in memory for the duration of foreach, as well as objects necessary for iteration, and yet the cost is all at the beginning - the yield is basically an empty loop.
This algorithm is used ...
Delete multiple records using REST
... you don't have to adhere to it (but you lose certain benefits of the internet if you don't). I suggest you look down this list of HTTP API architectures and pick the one that suits you. Just make yourself aware of what you lose out on if you choose another architecture, and make an informed decisio...
How to disable HTML links
...y (2016) it's well supported only by Chrome, FireFox and Opera (19+). Internet Explorer started to support this from version 11 but not for links however it's available in an outer element like:
span.disable-links {
pointer-events: none;
}
With:
<span class="disable-links"><a href="...