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inserting characters at the start and end of a string
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answered Apr 8 '12 at 0:47
Mark ByersMark Byers
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JPA: How to have one-to-many relation of the same Entity type
...ate both sides of the relationship. This is written unambiguously on page 42 of the JPA 2.0 spec:
Note that it is the application that bears responsibility for maintaining the consistency of runtime relationships—for example, for insuring that the “one” and the “many” sides of a bidir...
Count occurrences of a char in plain text file
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edited Oct 21 '09 at 21:45
answered Oct 21 '09 at 21:37
C...
Specify format for input arguments argparse python
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answered Aug 24 '14 at 10:53
jonrsharpejonrsharpe
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jQuery - Add ID instead of Class
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gsamaras
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answered Feb 1 '10 at 13:40
SarfrazSarfr...
Run Cron job every N minutes plus offset
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Which is why */20 * * * * will run at 0 minutes, 20 minutes after, and 40 minutes after -- which is the same as every 20 minutes. However, */25 * * * * will run at 0 minutes, 25 minutes after, and 50 minutes after -- which is not the same as every 25 minutes. That's why it's usually desirable to...
Regex to match a digit two or four times
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145
There's no specific syntax for that, but there are lots of ways to do it:
(?:\d{4}|\d{2}) &...
Multiple levels of 'collection.defaultdict' in Python
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347
Use:
from collections import defaultdict
d = defaultdict(lambda: defaultdict(int))
This will...
How do I download a tarball from GitHub using cURL?
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148
Use the -L option to follow redirects:
curl -L https://github.com/pinard/Pymacs/tarball/v0.24-...