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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
... the "universal" constructor is not, in fact, supposed to always move from its argument. It's supposed to move if the argument is really an rvalue, and copy if it's an lvalue.
The behaviour, you observe, which always moves, is a bug in libstdc++, which is now fixed according to a comment on the que...
Can't find the PostgreSQL client library (libpq)
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edited Nov 23 '12 at 5:38
Marc-André Lafortune
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Select count(*) from multiple tables
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edited Mar 5 '09 at 9:52
answered Mar 3 '09 at 12:39
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Qt: can't find -lGL error
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edited Jul 30 '18 at 14:05
Rando Hinn
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How to convert a scala.List to a java.util.List?
... necessary if the type expected is a Java List, as the conversion is implicit, as demonstrated by the last line.
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Synchronous request in Node.js
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Please try IcedCoffeScript to which provides await and defer for nodejs.
– Thanigainathan
Jul 25 '14 at 22:21
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How to limit the maximum value of a numeric field in a Django model?
...us numeric fields available for use in models, e.g. DecimalField and PositiveIntegerField . Although the former can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a certain range, e...
How to print the full traceback without halting the program?
I'm writing a program that parses 10 websites, locates data files, saves the files, and then parses them to make data that can be readily used in the NumPy library. There are tons of errors this file encounters through bad links, poorly formed XML, missing entries, and other things I've yet to cat...
Concatenating two lists - difference between '+=' and extend()
...on call, which is slightly more expensive in Python than the INPLACE_ADD.
It's really nothing you should be worrying about, unless you're performing this operation billions of times. It is likely, however, that the bottleneck would lie some place else.
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
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should not be the accepted answer as it's error prone and not practical. there are utilities that do the job much better, Scroll down to find out.
– Eric
Aug 9 '18 at 20:16
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