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How do I check if a variable exists in a list in BASH
...ho 'no'
or create a function:
contains() {
[[ $1 =~ (^|[[:space:]])$2($|[[:space:]]) ]] && exit(0) || exit(1)
}
to use it:
contains aList anItem
echo $? # 0： match, 1: failed
share
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
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287
New solution (PostgreSQL 8.4)
SELECT
*
FROM (
SELECT
ROW_NUMBER() OVER (PARTITION B...
How to update Ruby to 1.9.x on Mac?
...my mac and I am trying to update to the current version of ruby on it (1.9.2) from the snow leopard default of 1.8.7. Can somebody point me to tutorial or explain the best method to update Ruby on my mac from 1.8 to 1.9.2? Thanks
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apache to tomcat: mod_jk vs mod_proxy
...proxy_ajp and mod_proxy_balancer comes as part of
standard Apache 2.2+ distribution
o Ability to use http https or AJP protocols, even within the same
balancer.
* Cons:
o mod_proxy_ajp does not support large 8K+ packet sizes.
o Basic load balancer
o Does not...
How can I change the current URL?
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edited Sep 5 '13 at 2:25
answered Oct 2 '10 at 18:10
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What would a “frozen dict” be?
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121
Python doesn't have a builtin frozendict type. It turns out this wouldn't be useful too often (...
Is there YAML syntax for sharing part of a list or map?
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answered Mar 1 '12 at 23:34
kittemonkittemon
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Is there a way to use SVG as content in a pseudo element :before or :after
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267
Yes you can! Just tested this and it works great, this is awesome! It still doesn't work with ...
Where to place the 'assets' folder in Android Studio?
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22 Answers
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