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What is the Swift equivalent to Objective-C's “@synchronized”?
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184
You can use GCD. It is a little more verbose than @synchronized, but works as a replacement:
le...
float64 with pandas to_csv
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edited Jul 14 '17 at 19:21
Acumenus
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pandas GroupBy columns with NaN (missing) values
...ng the groupby (e.g. -1):
In [11]: df.fillna(-1)
Out[11]:
a b
0 1 4
1 2 -1
2 3 6
In [12]: df.fillna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github i...
How do I create a link using javascript?
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edited Mar 20 at 0:45
Harry Moreno
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answer...
Difference between assertEquals and assertSame in phpunit?
...s you can see in the example below the above excerpt, they are passing '2204' and 2204, which will fail using assertSame because one is a string and one is an int, basically:
'2204' !== 2204
assertSame('2204', 2204) // this test fails
assertEquals
"Reports an error identified by $message if t...
How to obtain Signing certificate fingerprint (SHA1) for OAuth 2.0 on Android?
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174
Start an export process to create an apk for your app and use your production key. The very last...
How do I convert a pandas Series or index to a Numpy array? [duplicate]
...se the values attribute:
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c']); df
A B
a 1 4
b 2 5
c 3 6
In [2]: df.index.values
Out[2]: array(['a', 'b', 'c'], dtype=object)
This accesses how the data is already stored, so there's no need for a conversion.
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How to solve the error LNK2019: unresolved external symbol - function?
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answered Nov 10 '13 at 5:47
kevintodiscokevintodisco
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How to change the Eclipse default workspace?
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edited Dec 22 '14 at 13:51
erakitin
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an...
Declaration/definition of variables locations in ObjectiveC?
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