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What is the difference between UNION and UNION ALL?
...bout performance...
– Jim Harte
Jul 13 '11 at 13:16
256
UNION ALL can be slower than UNION in rea...
How to split a delimited string in Ruby and convert it to an array?
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edited Oct 16 '13 at 11:23
answered Jun 10 '09 at 13:59
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How do I efficiently iterate over each entry in a Java Map?
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Jared Burrows
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answered Sep 5 '08 at 21:15
ScArcher2ScArcher2
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How can I escape white space in a bash loop list?
...done
– David Moles
Nov 14 '12 at 19:13
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show 5 more comments
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How to change the name of an iOS app?
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GiaoGiao
13.5k22 gold badges2222 silver badges1818 bronze badges
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Timeout a command in bash without unnecessary delay
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edited Dec 14 '13 at 23:35
Matthew H.
30211 silver badge77 bronze badges
answered Mar 26 '09 ...
Wrap long lines in Python [duplicate]
...an be omitted.
– Daniel Reis
Jan 7 '13 at 17:19
4
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Convert datetime to Unix timestamp and convert it back in python
I have dt = datetime(2013,9,1,11) , and I would like to get a Unix timestamp of this datetime object.
11 Answers
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How to generate a random string in Ruby
...nt.
– michaeltwofish
Jul 6 '12 at 7:13
36
[*('a'..'z'),*('0'..'9')].shuffle[0,8].join to generate...
What is the easiest way to make a C++ program crash?
...h now would it?
– Donal Fellows
Dec 13 '11 at 18:00
Since abort() is the correct answer, then should 'exit(-1);` be ac...