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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
... care, compile with assembler output for your platform and look to see.
It doesn't matter. This never matters. Write your infinite loops however you like.
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How to atomically delete keys matching a pattern using Redis
...V[1])))" 0 prefix:[YOUR_PREFIX e.g delete_me_*]
Warning: As the Redis document says, because of performance maters, keys
command should not use for regular operations in production, this
command is intended for debugging and special operations. read
more
See the EVAL documentation.
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How do you move a commit to the staging area in git?
... branch in the state that it would have been in prior to the commit) - how do you do it? Or is it something that you can't do?
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How do I use su to execute the rest of the bash script as that user?
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The trick is to use "sudo" command instead of "su"
You may need to add this
username1 ALL=(username2) NOPASSWD: /path/to/svn
to your /etc/sudoers file
and change your script to:
sudo -u username2 -H sh -c "cd /home/$USERNAME/$PROJECT; svn up...
How do I get the RootViewController from a pushed controller?
... :) ty. It still seems hacky - :) I really wanted an "official" member to do the job, something like self.navigationController.rootViewController, but alas, no such thing..
– bobobobo
Nov 25 '09 at 2:21
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How do I filter an array with AngularJS and use a property of the filtered object as the ng-model at
... Angular model to a property of one of the elements based on a filter, how do I do that? I can explain better with a concrete example:
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?
Can someone explain this (straight from the docs - emphasis mine):
8 Answers
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What is 'Context' on Android?
...eating a text view. But while dynamically creating arrays of text views we don't have to mention any context. Why is that so ? TextView[] textview = new TextView[10];
– Abhinav Arora
Dec 26 '14 at 8:09
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Why do we copy then move?
...uestions, one thing you seem to be getting wrong: taking by value in C++11 does not always mean copying. If an rvalue is passed, that will be moved (provided a viable move constructor exists) rather than being copied. And std::string does have a move constructor.
Unlike in C++03, in C++11 it is oft...
How do you round a number to two decimal places in C#?
I want to do this using the Math.Round function
15 Answers
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