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Detect if value is number in MySQL
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259
This should work in most cases.
SELECT * FROM myTable WHERE concat('',col1 * 1) = col1
It doe...
Which is the correct C# infinite loop, for (;;) or while (true)? [closed]
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answered Sep 9 '09 at 18:08
Adam RobinsonAdam Robinson
166k3131 gold badges264264 silver badges327327 bronze badges
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Regular expression to match URLs in Java
...ing beginning placeholder.
String regex = "^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
This works too:
String regex = "\\b(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
Note:
String regex = "<\\b(https?|ftp|file)://[...
What is the difference between square brackets and parentheses in a regex?
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These regexes are equivalent (for matching purposes):
/^(7|8|9)\d{9}$/
/^[789]\d{9}$/
/^[7-9]\d{9}$/
The explanation:
(a|b|c) is a regex "OR" and means "a or b or c", although the presence of brackets, necessary for the OR, also captures the digit. To be strictly equivalent, you w...
How to validate an email address using a regular expression?
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2519
+50
The fully...
Downloading jQuery UI CSS from Google's CDN
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community wiki
9 revs, 8 users 31%cletus
2
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Completely uninstall PostgreSQL 9.0.4 from Mac OSX Lion?
...major differences. I'm running Lion and I'm trying to uninstall PostgreSQL 9.0.4. I've looked at the last question and the link that it referenced, but I did not find a file called "uninstall-postgresql" when I run this command:
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CSS “and” and “or”
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answered May 9 '10 at 8:59
geoffleegeofflee
2,67522 gold badges2020 silver badges2222 bronze badges
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All combinations of a list of lists
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449
you need itertools.product:
>>> import itertools
>>> a = [[1,2,3],[4,5,6],[7,...
Postgresql 9.2 pg_dump version mismatch
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29
You can either install PostgreSQL 9.2.1 in the pg_dump client machine or just copy the $PGHOME f...