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What is the difference between float and double?
...lts. Is this really the case? When are floats and doubles interchangeable? What are the differences between them?
13 Answer...
Fastest way to reset every value of std::vector to 0
What's the fastest way to reset every value of a std::vector<int> to 0 and keeping the vectors initial size ?
6 An...
How can I start PostgreSQL server on Mac OS X?
...tart postgresql now and restart at login:"
brew services start postgresql
What is the result of pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start?
What is the result of pg_ctl -D /usr/local/var/postgres status?
Are there any error messages in the server.log?
Make sure tc...
What is the difference between canonical name, simple name and class name in Java Class?
In Java, what is the difference between these:
8 Answers
8
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More elegant “ps aux | grep -v grep”
...word 'terminal' without putting the word 'terminal' into the process list. What are you trying to achieve with | grep '[r]oot' and how is it not working? There is likely to be a better solution.
– Johnsyweb
Oct 1 '14 at 20:33
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Why are primes important in cryptography?
...es me as a non-cryptographer: Why is it so important to use Prime numbers? What makes them so special in cryptography?
14 A...
Forward declaring an enum in C++
...hat is visible is the forward declaration, the translation unit can't know what storage size will have been chosen - it could be a char or an int, or something else.
From Section 7.2.5 of the ISO C++ Standard:
The underlying type of an enumeration is an integral type that can represent all th...
How expensive is the lock statement?
... system core, that is different ring which is not measured by these tests. What is measured as 25ns to 50ns is actually application level interlocked instructions code if lock is not taken
– ipavlu
Aug 15 '17 at 10:49
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Spring mvc @PathVariable
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yeah provide some details, what you trying to do and whats the issue
– coder
Nov 6 '13 at 4:39
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presentViewController:animated:YES view will not appear until user taps again
...g some strange behaviour with presentViewController:animated:completion . What I'm making is essentially a guessing game.
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