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Return index of greatest value in an array
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edited Jul 23 '18 at 4:30
answered Jul 2 '12 at 21:29
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Build tree array from flat array in javascript
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edited Jul 11 at 8:24
adiga
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answered Aug 2...
input type=file show only button
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shibashiba
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SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed
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edited Jul 31 '14 at 11:23
askmish
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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...
Peak signal detection in realtime timeseries data
...sify a new datapoint as being a signal. For example, if a new datapoint is 4.0 standard deviations above the moving mean and the threshold parameter is set as 3.5, the algorithm will identify the datapoint as a signal. This parameter should be set based on how many signals you expect. For example, i...
What is the “-->” operator in C++?
...e following snippet compiled and worked in both Visual Studio 2008 and G++ 4.4.
25 Answers
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How to convert a string of bytes into an int?
...ule to do this:
>>> struct.unpack("<L", "y\xcc\xa6\xbb")[0]
3148270713L
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Rails 4 LIKE query - ActiveRecord adds quotes
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edited Dec 10 '15 at 19:48
Ian Vaughan
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Should private helper methods be static if they can be static
...Luontola
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