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Filter dict to contain only certain keys?
I've got a dict that has a whole bunch of entries. I'm only interested in a select few of them. Is there an easy way to prune all the other ones out?
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How do you split a list into evenly sized chunks?
I have a list of arbitrary length, and I need to split it up into equal size chunks and operate on it. There are some obvious ways to do this, like keeping a counter and two lists, and when the second list fills up, add it to the first list and empty the second list for the next round of data, but t...
How do you reindex an array in PHP?
I have the following array, which I would like to reindex so the keys are reversed (ideally starting at 1):
21 Answers
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How does _gaq.push(['_trackPageLoadTime']) work?
How does the Google Analytics Site Speed feature, _gaq.push(['_trackPageLoadTime']) , work? Is there any documentation about how it works?
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What is the lifetime of a static variable in a C++ function?
If a variable is declared as static in a function's scope it is only initialized once and retains its value between function calls. What exactly is its lifetime? When do its constructor and destructor get called?
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How to sort a list of lists by a specific index of the inner list?
I have a list of lists. For example,
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Scala: List[Future] to Future[List] disregarding failed futures
I'm looking for a way to convert an arbitrary length list of Futures to a Future of List. I'm using Playframework, so ultimately, what I really want is a Future[Result] , but to make things simpler, let's just say Future[List[Int]] The normal way to do this would be to use Future.sequence(...) ...
How do .gitignore exclusion rules actually work?
I'm trying to solve a gitignore problem on a large directory structure, but to simplify my question I have reduced it to the following.
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How can we match a^n b^n with Java regex?
One of the archetypal non- regular languages is:
3 Answers
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urlencode vs rawurlencode?
If I want to create a URL using a variable I have two choices to encode the string. urlencode() and rawurlencode() .
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