大约有 43,000 项符合查询结果（耗时：0.0264秒） [XML]
How to find if a given key exists in a C++ std::map
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edited Aug 28 '13 at 9:05
answered Dec 21 '09 at 12:58
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How to force push a reset to remote repository?
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edited Dec 1 '17 at 13:21
community wiki
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split string in to 2 based on last occurrence of a separator
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3 Answers
3
Active
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What is external linkage and internal linkage?
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All the Rage
49033 silver badges1818 bronze badges
answered Aug 31 '09 at 17:59
dudewatdudewat
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How to get the second column from command output?
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answered Apr 21 '13 at 22:57
cataycatay
33822 silver badges22 bronze badges
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REST API - why use PUT DELETE POST GET?
...mented as:
Post: /cars/oldest?action=delete
Whereas
Delete: /cars/id/123456
will result in the same server state if you call it once, or if you call it 1000 times.
A better way of handling the removal of the oldest item would be to request:
Get: /cars/oldest
and use the ID from the resulti...
Quickly reading very large tables as dataframes
I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead o...
How to write to file in Ruby?
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Michael Gaskill
7,4391010 gold badges3737 silver badges3939 bronze badges
answered May 6 '10 at 1:31
jdljdl
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Grepping a huge file (80GB) any way to speed it up?
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153
Here are a few options:
1) Prefix your grep command with LC_ALL=C to use the C locale instead o...
Fastest way to check if a file exist using standard C++/C++11/C?
... return ( access( name.c_str(), F_OK ) != -1 );
}
inline bool exists_test3 (const std::string& name) {
struct stat buffer;
return (stat (name.c_str(), &buffer) == 0);
}
Results for total time to run the 100,000 calls averaged over 5 runs,
Method exists_test0 (ifstream): **0.485s...