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HSL to RGB color conversion

...(which he attributes to a now defunct mjijackson.com, but is archived here and the original author has a gist - thanks to user2441511). The code is re-posted below: HSL to RGB: /** * Converts an HSL color value to RGB. Conversion formula * adapted from http://en.wikipedia.org/wiki/HSL_color_sp...
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How do I use vim registers?

... Registers in Vim let you run actions or commands on text stored within them. To access a register, you type "a before a command, where a is the name of a register. If you want to copy the current line into register k, you can type "kyy Or you can append to a regis...
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How can I view the source code for a function?

...S4 method dispatch system The S4 system is a newer method dispatch system and is an alternative to the S3 system. Here is an example of an S4 function: > library(Matrix) Loading required package: lattice > chol2inv standardGeneric for "chol2inv" defined from package "base" function (x, ...)...
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Why use a ReentrantLock if one can use synchronized(this)?

I'm trying to understand what makes the lock in concurrency so important if one can use synchronized (this) . In the dummy code below, I can do either: ...
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Clear the entire history stack and start a new activity on Android

...I lvl <= 10, I haven't yet found a clean solution to this. The "DontHackAndroidLikeThis" solution is indeed pure hackery. You should not do that. :) Edit: As per @Ben Pearson's comment, for API <=10 now one can use IntentCompat class for the same. One can use IntentCompat.FLAG_ACTIVITY_CLEAR_T...
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How to step through Python code to help debug issues?

...va/C# you can easily step through code to trace what might be going wrong, and IDE's make this process very user friendly. ...
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What do commas and spaces in multiple classes mean in CSS?

Here is an example that I do not understand: 9 Answers 9 ...
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In the shell, what does “ 2>&1 ” mean?

In a Unix shell, if I want to combine stderr and stdout into the stdout stream for further manipulation, I can append the following on the end of my command: ...
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AngularJS ui-router login authentication

I am new to AngularJS, and I am a little confused of how I can use angular-"ui-router" in the following scenario: 10 Answer...
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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?

... Running a command through /usr/bin/env has the benefit of looking for whatever the default version of the program is in your current environment. This way, you don't have to look for it in a specific place on the system, as those paths ma...