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Calculating arithmetic mean (one type of average) in Python
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See the question above: To avoid division by zero ( for [] )
– Simon Fakir
Jul 27 '17 at 11:05
6
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In Django, how does one filter a QuerySet with dynamic field lookups?
...nt expansion may be used to solve this problem:
kwargs = {
'{0}__{1}'.format('name', 'startswith'): 'A',
'{0}__{1}'.format('name', 'endswith'): 'Z'
}
Person.objects.filter(**kwargs)
This is a very common and useful Python idiom.
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How to create a density plot in matplotlib?
...uses a changable function, covariance_factor to calculate its bandwidth. Before changing the function, the value returned by covariance_factor for this data was about .5. Lowering this lowered the bandwidth. I had to call _compute_covariance after changing that function so that all of the factors wo...
How to get the anchor from the URL using jQuery?
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For current window, you can use this:
var hash = window.location.hash.substr(1);
To get the hash value of the main window, use this:
var hash = window.top.location.hash.substr(1);
If you have a string with an URL/hash, ...
append to url and refresh page
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For a case where you know this will be the only parameter, you can also set search instead of appending to it: window.location.search = '?param=42';
– Dave DuPlantis
Sep 2 '15 at 17:12
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Extract file name from path, no matter what the os/path format
... extract filenames from paths, no matter what the operating system or path format could be?
17 Answers
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Convert hyphens to camel case (camelCase)
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This doesn't scream out for a RegExp to me. Personally I try to avoid regular expressions when simple string and array methods will suffice:
let upFirst = word =>
word[0].toUpperCase() + word.toLowerCase().slice(1)
let camelize = text => ...
Code Golf - π day
Guidelines for code-golf on SO
26 Answers
26
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How can I correctly prefix a word with “a” and “an”?
...program that spits out only article text (the download is generally in XML format, along with non-article metadata too).
Find all instances of a(n).... and make an index on the following word and all of its prefixes (you can use a simple suffixtrie for this). This should be case sensitive, and you'l...
How to detect that animation has ended on UITableView beginUpdates/endUpdates?
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Didn't work for me. Completion block is called while the animation is still running.
– mrvincenzo
Feb 19 '13 at 12:56
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