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What does @: (at symbol colon) mean in a Makefile?
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It means "don't echo this command on the output." So this rule is saying "execute the shell co...
arrow operator (->) in function heading
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In C++11, there are two syntaxes for function declaration:
return-type identifier ( arg...
What's the difference between NOT EXISTS vs. NOT IN vs. LEFT JOIN WHERE IS NULL?
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answered Feb 11 '10 at 18:42
QuassnoiQuassnoi
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PostgreSQL naming conventions
...(for general SQL) here, all with several related links.
Note: Postgresql 10 introduced identity columns as an SQL-compliant replacement for serial.
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Equivalent of Math.Min & Math.Max for Dates?
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answered Dec 31 '09 at 13:27
GuffaGuffa
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Undoing a commit in TortoiseSVN
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edited Feb 10 '17 at 20:59
bahrep
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Index on multiple columns in Ruby on Rails
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edited Mar 25 '17 at 14:04
Nick Merrill
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When editing Microsoft Office VBA, how can I disable the popup “Compile error” messages?
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edited May 12 '16 at 20:04
Jon Freed
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Python nonlocal statement
What does the Python nonlocal statement do (in Python 3.0 and later)?
9 Answers
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
...n-'NA' element,
and give an error if neither works.
as.Date("01 Jan 2000") yields an error because the format isn't one of the two listed above. as.Date("01/01/2000") yields an incorrect answer because the date isn't in one of the two formats listed above.
I take "standard unambiguo...