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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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What is ModelState.IsValid valid for in ASP.NET MVC in NerdDinner?
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All the model fields which have definite types, those should be validated when returned to Controller. If any of the model fields are not matching with their defined type, then ModelState.IsValid will return false. Because, T...