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Using :after to clear floating elements
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261
Write like this:
.wrapper:after {
content: '';
display: block;
clear: both;
}
C...
How to count occurrences of a column value efficiently in SQL?
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263
This should work:
SELECT age, count(age)
FROM Students
GROUP by age
If you need the id...
Remote branch is not showing up in “git branch -r”
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Peter Mortensen
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answered Sep 7 '12 at 15:17
kankan
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Array include any value from another array?
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272
(cheeses & foods).empty?
As Marc-André Lafortune said in comments, & works in linea...
PostgreSQL delete with inner join
i am getting the following error PostgreSQL 8.2.11
5 Answers
5
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How do I save and restore multiple variables in python?
...in a single list, or tuple, for instance:
import pickle
# obj0, obj1, obj2 are created here...
# Saving the objects:
with open('objs.pkl', 'w') as f: # Python 3: open(..., 'wb')
pickle.dump([obj0, obj1, obj2], f)
# Getting back the objects:
with open('objs.pkl') as f: # Python 3: open(...,...
How do I fetch lines before/after the grep result in bash?
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275
You can use the -B and -A to print lines before and after the match.
grep -i -B 10 'error' da...
How to find the files that are created in the last hour in unix
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216
If the dir to search is srch_dir then either
$ find srch_dir -cmin -60 # change time
or
$ ...