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Convert columns to string in Pandas
...strings):
In [11]: df = pd.DataFrame([['A', 2], ['A', 4], ['B', 6]])
In [12]: df.to_json()
Out[12]: '{"0":{"0":"A","1":"A","2":"B"},"1":{"0":2,"1":4,"2":6}}'
In [13]: df[0].to_json()
Out[13]: '{"0":"A","1":"A","2":"B"}'
Note: you can pass in a buffer/file to save this to, along with some other ...
How can I debug git/git-shell related problems?
...E=$PWD/gc.log git gc
Counting objects: 143760, done.
...
$ head gc.log
20:12:37.214410 trace.c:420 performance: 0.090286000 s: git command: 'git' 'pack-refs' '--all' '--prune'
20:12:37.378101 trace.c:420 performance: 0.156971000 s: git command: 'git' 'reflog' 'expire' '--all...
The performance impact of using instanceof in Java
...lso stated (in the same article) "In established engineering disciplines a 12 % improvement, easily obtained, is never considered marginal and I believe the same viewpoint should prevail in software engineering", nearly all his work was about efficiency of algorithms and he wrote algorithms in assem...
Given an emacs command name, how would you find key-bindings ? (and vice versa)
...66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.8962 46.1709 13.2535 46.1709 11.9512V9.17788Z\"/\u003e\u003cpath d=\"M32.492 10.1419C32.492 12.6954 34.1182 14.0484 37.0451 14.0484C39.9723 14.0484 41.5985 12.6954...
jQuery access input hidden value
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answered Dec 7 '10 at 12:42
Tatu UlmanenTatu Ulmanen
111k3131 gold badges172172 silver badges179179 bronze badges
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Assign pandas dataframe column dtypes
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and confirm the dtype is updated.
OLD/DEPRECATED ANSWER for pandas 0.12 - 0.16: You can use convert_objects to 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=Tr...
Inspecting standard container (std::map) contents with gdb
...e in the file.
– Kyle Simek
May 20 '12 at 20:22
pvector isn't defined in my gdb (version 7.5.91.20130417-cvs-ubuntu).
...
Is .NET Remoting really deprecated?
...c scenario.
– Mark
Aug 18 '09 at 17:12
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INSTALL_FAILED_UPDATE_INCOMPATIBLE when I try to install compiled .apk on device
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answered Oct 31 '12 at 15:00
Mustafa GüvenMustafa Güven
13.9k1010 gold badges5454 silver badges7979 bronze badges
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How do I clone a range of array elements to a new array?
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edited Jul 12 '09 at 9:19
answered Jun 3 '09 at 8:32
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