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Require either of two arguments using argparse
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answered Jun 22 '12 at 11:14
jlengrandjlengrand
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jQuery add required to input fields
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436
$("input").prop('required',true);
DEMO FIDDLE
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How do you suppress output in IPython Notebook?
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In PHP, why does not show a parse error?
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Giulio Muscarello
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answered Nov 5 '12 at 8:23
PekkaPekka
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Do you need break in switch when return is used?
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insumityinsumity
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Pandas aggregate count distinct
...about either of:
>>> df
date duration user_id
0 2013-04-01 30 0001
1 2013-04-01 15 0001
2 2013-04-01 20 0002
3 2013-04-02 15 0002
4 2013-04-02 30 0002
>>> df.groupby("date").agg({"duration": np.sum, "user_id": pd.Ser...
Why does gulp.src not like being passed an array of complete paths to files?
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answered Jan 27 '14 at 17:17
OverZealousOverZealous
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How to parse a JSON string to an array using Jackson
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How to synchronize a static variable among threads running different instances of a class in Java?
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194
There are several ways to synchronize access to a static variable.
Use a synchronized static m...