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Is there a way to 'uniq' by column?
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335
sort -u -t, -k1,1 file
-u for unique
-t, so comma is the delimiter
-k1,1 for the key field ...
Python's many ways of string formatting — are the older ones (going to be) deprecated?
...re's no surviving plan to ever deprecate the latter.
In commit Issue #14123: Explicitly mention that old style % string formatting has caveats but is not going away any time soon., inspired by issue Indicate that there are no current plans to deprecate printf-style formatting, the docs on %-formatt...
assertEquals vs. assertEqual in python
...ssertion methods
assertEqual = assertEquals = failUnlessEqual
In Python 3, to your point, failUnlessEqual is explicitly deprecated. assertEquals carries this comment :-)
# Synonyms for assertion methods
# The plurals are undocumented. Keep them that way to discourage use.
# Do not ...
When to use window.opener / window.parent / window.top
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163
window.opener refers to the window that called window.open( ... ) to open the window from which...
How do I find out which settings.xml file maven is using
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223
Use the Maven debug option, ie mvn -X :
Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)...
Remove duplicated rows
...only need the first three columns
deduped.data <- unique( yourdata[ , 1:3 ] )
# the fourth column no longer 'distinguishes' them,
# so they're duplicates and thrown out.
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Confirm deletion in modal / dialog using Twitter Bootstrap?
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403
GET recipe
For this task you can use already available plugins and bootstrap extensions. Or you...
Find row where values for column is maximal in a pandas DataFrame
...t; import numpy as np
>>> df = pandas.DataFrame(np.random.randn(5,3),columns=['A','B','C'])
>>> df
A B C
0 1.232853 -1.979459 -0.573626
1 0.140767 0.394940 1.068890
2 0.742023 1.343977 -0.579745
3 2.125299 -0.649328 -0.211692
4 -0.187253 1.908618 -...
Checking for the correct number of arguments
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