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Equivalent of .try() for a hash to avoid “undefined method” errors on nil? [duplicate]
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edited May 1 '13 at 4:29
mkenyon
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Why is this jQuery click function not working?
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answered Sep 3 '13 at 22:14
mobiusmobius
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What is non-blocking or asynchronous I/O in Node.js?
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Synchronous vs Asynchronous
Synchronous execution usually refers to code executing in sequenc...
Elegant way to invert a map in Scala
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answered Feb 25 '10 at 23:59
Daniel C. SobralDaniel C. Sobral
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Why is there no tuple comprehension in Python?
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You can use a generator expression:
tuple(i for i in (1, 2, 3))
but parentheses were already taken for … generator expressions.
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Bootstrap modal appearing under background
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answered Aug 3 '12 at 3:09
MuhdMuhd
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How to split a long regular expression into multiple lines in JavaScript?
...,[\]\\.,;:\\s@\"]+)*)',
'|(\\".+\\"))@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.',
'[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\\.)+',
'[a-zA-Z]{2,}))$'].join(''));
Notes:
when converting the expression literal to a string you need to ...
How to keep keys/values in same order as declared?
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13 Answers
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Delete the first three rows of a dataframe in pandas
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Use iloc:
df = df.iloc[3:]
will give you a new df without the first three rows.
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