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What does the brk() system call do?
According to Linux programmers manual:
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Named regular expression group “(?Pregexp)”: what does “P” stand for?
In Python, the (?P<group_name>…) syntax allows one to refer to the matched string through its name:
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Extract a number from a string (JavaScript)
I have a string in JavaScript like #box2 and I just want the 2 from it.
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How to construct a timedelta object from a simple string
I'm writing a function that needs a timedelta input to be passed in as a string. The user must enter something like "32m" or "2h32m", or even "4:13" or "5hr34m56s"... Is there a library or something that has this sort of thing already implemented?
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Rolling or sliding window iterator?
...(aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for doing this?
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Uploading images using Node.js, Express, and Mongoose
Please consider newer answers that have more up-to-date information as things have changed over the years!
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How to check if a process id (PID) exists
In a bash script, I want to do the following (in pseudo-code):
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What is the most elegant way to remove a path from the $PATH variable in Bash?
Or more generally, how do I remove an item from a colon-separated list in a Bash environment variable?
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Using Python 3 in virtualenv
Using virtualenv , I run my projects with the default version of Python (2.7). On one project, I need to use Python 3.4.
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Finding the max value of an attribute in an array of objects
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To find the maximum y value of the objects in array:
Math.max.apply(Math, array.map(function(o) { return o.y; }))
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