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How to randomly select rows in SQL?
... table "customerNames" which has two columns "Id" and "Name" and approx. 1,000 results.
11 Answers
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How can I create a two dimensional array in JavaScript?
...ay containing 1...N
Alternatively (but more inefficient 12% with n = 10,000)
Array(2).fill(null).map(() => Array(4))
The performance decrease comes with the fact that we have to have the first dimension values initialized to run .map. Remember that Array will not allocate the positions unt...
Is < faster than
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Jonathon ReinhartJonathon Reinhart
110k2727 gold badges205205 silver badges283283 bronze badges
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How to strip all whitespace from string
...initial timings:
$ python -m timeit '"".join(" \t foo \n bar ".split())'
1000000 loops, best of 3: 1.38 usec per loop
$ python -m timeit -s 'import re' 're.sub(r"\s+", "", " \t foo \n bar ")'
100000 loops, best of 3: 15.6 usec per loop
Note the regex is cached, so it's not as slow as you'd imagin...
Where to store global constants in an iOS application?
...think the compiler detects if your code creates the same static string 300,000 times and will only create it once. @"foo" is not the same as [[NSString alloc] initWithCString:"foo"].
– Abhi Beckert
Jul 19 '13 at 14:17
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PHP best way to MD5 multi-dimensional array?
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edited Jun 11 '15 at 6:32
answered Oct 11 '11 at 9:09
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Use Visual Studio web.config transform for debugging [duplicate]
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Community♦
111 silver badge
answered Oct 22 '10 at 5:13
Sayed Ibrahim HashimiSayed Ibrahim Hashimi
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How to automatically start a service when running a docker container?
...e
a2enmod headers
service apache2 restart
a2ensite mysite.conf
a2dissite 000-default.conf
service apache2 reload
if [ -z "$1" ]
then
exec "/usr/sbin/apache2 -D -foreground"
else
exec "$1"
fi
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Java SimpleDateFormat(“yyyy-MM-dd'T'HH:mm:ss'Z'”) gives timezone as IST
...te that without ' ' at Z yyyy-MM-dd'T'HH:mm:ssZ prints 2015-01-22T03:41:02+0000
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Script to get the HTTP status code of a list of urls?
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I don't know why script from above andswer always get me 000 in the output, but when I run command only once without loop it works...
– Karol F
Aug 9 '16 at 7:08
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