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Add column with number of days between dates in DataFrame pandas
...f['B'] = pd.to_datetime(df['B'])
In [11]: df.dtypes # if already datetime64 you don't need to use to_datetime
Out[11]:
A datetime64[ns]
B datetime64[ns]
dtype: object
In [12]: df['A'] - df['B']
Out[12]:
one -58 days
two -26 days
dtype: timedelta64[ns]
In [13]: df['C'] = df['A'] - df['B...
Custom dealloc and ARC (Objective-C)
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edited Nov 26 '14 at 6:41
answered Sep 3 '11 at 8:59
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Iterate through the fields of a struct in Go
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After you've retrieved the reflect.Value of the field by using Field(i) you can get a
interface ...
Is there a better way to write this null check, and a non-empty check, in groovy?
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dmahapatrodmahapatro
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Removing ul indentation with CSS
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TylerH
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answered Mar 8 '12 at 16:20
ZacZac
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Can git operate in “silent mode”?
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answered Jan 20 '12 at 16:05
araqnidaraqnid
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Does MySQL foreign_key_checks affect the entire database?
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File extension for PowerShell 3
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Mike ShepardMike Shepard
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How do I check for a network connection?
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answered Feb 6 '09 at 13:53
Mitch WheatMitch Wheat
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what is .netrwhist?
...etrwhist is as shown
let g:netrw_dirhistmax =10
let g:netrw_dirhist_cnt =6
let g:netrw_dirhist_1='/Users/wolever/EnSi/repos/web/env/web/lib/python2.6/site-packages/django'
let g:netrw_dirhist_2='/private/tmp/b/.hg/attic'
let g:netrw_dirhist_3='/Users/wolever/code/sandbox/pydhcplib-0.6.2/pydhcplib'...