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Map and Reduce in .NET
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Why oh why don't they just call it Reduce instead of Aggregate... MS just likes to annoy programmers
– John Henckel
Mar 28 '19 at 20:27
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Entity Framework 4 Single() vs First() vs FirstOrDefault()
...where you are expecting a single record but they won't warn you if you actually get more than that single record back which could be important depending on the situation.
– Steve Willcock
Aug 14 '10 at 22:47
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How to handle WndProc messages in WPF?
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Actually, as far as I understand such a thing is indeed possible in WPF using HwndSource and HwndSourceHook. See this thread on MSDN as an example. (Relevant code included below)
// 'this' is a Window
HwndSource source = HwndSou...
How do I get out of a screen without typing 'exit'?
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yes, you generally do have a tl;dr moment with the man command. so when you have a tl;dr when doing man command_name, in this case man screen, you can generally access a shorter & pretty helpful version of the docs by --help option, ...
Have nginx access_log and error_log log to STDOUT and STDERR of master process
...our entrypoint (executed after volumes are mounted) or not use a volume at all (e.g. when logs are already collected by a central logging system).
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Show or hide element in React
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React circa 2020
In the onClick callback, call the state hook's setter function to update the state and re-render:
const Search = () => {
const [showResults, setShowResults] = React.useState(false)
const onClick = () => setShowResults(true)
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How to compare strings ignoring the case
...ect way for it not to complain is "Apple".casecmp("APPLE").zero? But personally I like Andres answer below, which uses .casecmp?
– 8bithero
May 29 '17 at 15:31
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Disable copy constructor
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@pauluss86 This is basically what Rust does: Move-by-default (and const-by-default). Very helpful in my opinion.
– Kapichu
Dec 31 '16 at 1:38
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Unstage a deleted file in git
Usually, to discard changes to a file you would do:
6 Answers
6
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Converting NumPy array into Python List structure?
...ype" (in a list). If you want to preserve the numpy data types, you could call list() on your array instead, and you'll end up with a list of numpy scalars. (Thanks to Mr_and_Mrs_D for pointing that out in a comment.)
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