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Test if characters are in a string

...ake an array of inputs. For reasons that are utterly unknown to me (I only started playing with R about an hour ago), it returns a vector of the indexes that match, rather than a list of matches. But, back to your original question, what we really want is to know whether we found the needle in the ...
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Asynchronous Process inside a javascript for loop [duplicate]

... runs immediately to completion while all your asynchronous operations are started. When they complete some time in the future and call their callbacks, the value of your loop index variable i will be at its last value for all the callbacks. This is because the for loop does not wait for an asyn...
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Linux: copy and create destination dir if it does not exist

...Bash, Dash, and zsh all do. A final note: the command I've given at the start of this answer assumes that your directory names don't have spaces in. If you're dealing with names with spaces, you'll need to quote them so that the different words aren't treated as different arguments to mkdir or cp...
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What is a segmentation fault?

...ut, it crashes sometimes, not always but not never either: then you should start worrying about bad RAM. – zwol Oct 26 '17 at 21:39 ...
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Why can I access TypeScript private members when I shouldn't be able to?

...de class 'Person' // because it has a private identifier. Private fields starts with # character Please note that these private fields will be something different than fields marked with private keyword Ref. https://devblogs.microsoft.com/typescript/announcing-typescript-3-8-beta/ ...
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How do I get the result of a command in a variable in windows?

... Be very careful with that. GWT also tried to use batch files for starting Java with specific classpaths, which failed horrible as soon as you're getting to directories with non-ASCII characters (in that case it was my home :)). They since rewrote that with VBS. – Joey...
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How to show “Done” button on iPhone number pad

... object:nil]; } // Add listener for all text fields starting to be edited [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(textFieldDidBeginEditing:) nam...
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Do you use NULL or 0 (zero) for pointers in C++?

... Bjarne wrote this before C++ 0x started working on a new null type. It will be the case that NULL will be used for this type when it is available for a platform, and I think you'll see a C-change in the general consensus about this. –...
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Is it possible to await an event instead of another async method?

..., when the button is clicked, based on the state that you have stored, you start another asynchronous task to continue the work. Because the SynchronizationContext will be captured in the event handler that calls GetResults (the compiler will do this as a result of using the await keyword being use...
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Can two applications listen to the same port?

...nd the other to another remote IP? I know I can have one application that starts off two threads (or forks) to have similar behavior, but can two applications that have nothing in common do the same? ...