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What does “not run” mean in R help pages?

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Is it better to call ToList() or ToArray() in LINQ queries?

... exactly to the number of elements. To meet this constraint ToArray often does one more allocation than ToList. Once it has an array that is big enough it allocates an array which is exactly the correct size and copies the elements back into that array. The only time it can avoid this is when the...
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How do you extract a column from a multi-dimensional array?

Does anybody know how to extract a column from a multi-dimensional array in Python? 20 Answers ...
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Why should I use version control? [closed]

...'t lose anything. I never again commented out code. I simply delete it. It doesn't clutter my screen, and it isn't lost. I can recover it by checking out an old commit. You can experiment at will. If it doesn't solve the problem, revert it. You can look at previous versions of the code to find out w...
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Transitions on the CSS display property

... that "visibility hidden" elements still occupy space while "display none" does not. – Rui Marques Nov 14 '13 at 10:48 43 ...
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Difference between final and effectively final

... an example of when something is effectively final. Though the description does make it clear. Var need not be declared final if no code changes it's value. – Skychan Oct 16 '15 at 15:31 ...
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initializer_list and move semantics

...r_list or const initializer_list at the compiler's discretion, so the user doesn't know whether to expect a const or mutable result from begin and end. But that's just my gut feeling, probably there's a good reason I'm wrong. Update: I've written an ISO proposal for initializer_list support of move...
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Why does Azure deployment take so long?

...ke 10 minutes for a new deployment. Honestly, I'm a little surprised Azure doesn't keep some VMs waiting at step 4 in this list to improve their customer experience. – Fls'Zen Dec 6 '17 at 18:48 ...
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What do 'real', 'user' and 'sys' mean in the output of time(1)?

... Does the time spent by child processes count into real/sys? – ron Aug 29 '11 at 10:53 1 ...
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Setting action for back button in navigation controller

...on. The odd thing is when assigning it though the backbutton attribute it doesn't pay attention to them and it just pops the current view and goes back to the root: ...