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postgresql - sql - count of `true` values
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edited May 14 '16 at 7:17
answered Mar 22 '11 at 19:29
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Using awk to print all columns from the nth to the last
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516
will print all but very first column:
awk '{$1=""; print $0}' somefile
will print all but two...
Download data url file
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edited Mar 3 '11 at 21:56
answered Oct 12 '10 at 15:24
Pe...
How to check the version before installing a package using apt-get?
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edited Jul 6 at 8:51
jotadepicas
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Difference between Java Enumeration and Iterator
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SusanW
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answered Jun 4 '09 at 1:46
coobirdcoobird
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passport.js passport.initialize() middleware not in use
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edited Jan 14 '17 at 15:56
answered May 27 '13 at 22:55
Pe...
SVN command to delete all locally missing files
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edited Dec 24 '16 at 8:30
Peter Mortensen
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Is it possible to write to the console in colour in .NET?
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edited Dec 29 '16 at 17:10
Malice
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answe...
Quickly reading very large tables as dataframes
.... For example, reading a ~7M row table takes 78s without the options, and 67s with the options. (note: the table has 1 character column, 4 integer columns, and I read using comment.char='' and stringsAsFactors=FALSE). Using save() and load() when possible is a great tip - once stored with save(), ...