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Is errno thread-safe?
...t can access the
per-thread error number as follows
(ISO/IEC 9945:1-1996, §2.4):
Some functions may provide the error number in a variable accessed
through the symbol errno. The symbol
errno is defined by including the
header , as specified by the
C Standard ... For each thread of ...
How to check if the string is empty?
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edited Aug 7 '13 at 16:07
answered Mar 5 '12 at 20:10
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How does _gaq.push(['_trackPageLoadTime']) work?
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Edit: As of November 16th 2011, the _trackPageLoadTime function has been deprecated and its functionality has been set as a default setting. (Functionally speaking, it has gone from being an opt-in feature to being an opt-out feature.)
_setSiteSp...
Differences between lodash and underscore [closed]
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answered Dec 16 '12 at 5:34
John-David DaltonJohn-David Dalton
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When I catch an exception, how do I get the type, file, and line number?
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David Cain
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answered Aug 14 '09 at 16:09
Ants AasmaAnts Aasma
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What is the difference between save and insert in Mongo DB?
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answered Apr 25 '13 at 8:26
RahulRahul
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Concatenating two lists - difference between '+=' and extend()
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edited May 13 '15 at 0:26
jesterjunk
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answered Sep 6 '10 at 1...
How do I create an average from a Ruby array?
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260
Try this:
arr = [5, 6, 7, 8]
arr.inject{ |sum, el| sum + el }.to_f / arr.size
=> 6.5
Note...
What are the differences between json and simplejson Python modules?
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json is simplejson, added to the stdlib. But since json was added in 2.6, simplejson has the advantage of working on more Python versions (2.4+).
simplejson is also updated more frequently than Python, so if you need (or want) the latest version, it's best to use simplejson itself, if possible...
How to get the client IP address in PHP [duplicate]
...abase as a string, make sure you have space for at least 45 characters. IPv6 is here to stay and those addresses are larger than the older IPv4 addresses.
(Note that IPv6 usually uses 39 characters at most but there is also a special IPv6 notation for IPv4 addresses which in its full form can be up...