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Regular expression for a string that does not start with a sequence
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edited May 22 '09 at 20:05
answered May 22 '09 at 18:57
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Assign pandas dataframe column dtypes
...o infer better dtypes:
In [21]: df
Out[21]:
x y
0 a 1
1 b 2
In [22]: df.dtypes
Out[22]:
x object
y object
dtype: object
In [23]: df.convert_objects(convert_numeric=True)
Out[23]:
x y
0 a 1
1 b 2
In [24]: df.convert_objects(convert_numeric=True).dtypes
Out[24]:
x obje...
delete map[key] in go?
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answered Nov 15 '09 at 1:22
user181548user181548
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Which is best way to define constants in android, either static class, interface or xml resource?
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edited Sep 22 '13 at 2:57
answered Jun 22 '12 at 6:04
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Algorithm to detect intersection of two rectangles?
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answered Sep 22 '08 at 15:28
Nils PipenbrinckNils Pipenbrinck
74.6k2323 gold badges141141 silver badges213213 bronze badges
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Can dplyr package be used for conditional mutating?
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220
Use ifelse
df %>%
mutate(g = ifelse(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4), 2,
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How to get the seconds since epoch from the time + date output of gmtime()?
...lsnmichaels
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16
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Hook up Raspberry Pi via Ethernet to laptop without router? [closed]
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answered Feb 20 '16 at 22:39
Nicole FinnieNicole Finnie
1,14699 silver badges1212 bronze badges
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Float vs Decimal in ActiveRecord
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edited Oct 22 '12 at 20:58
Jonathan Allard
15.9k99 gold badges4949 silver badges7070 bronze badges
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mysql :: insert into table, data from another table?
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answered Nov 22 '10 at 2:04
zerkmszerkms
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