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What does “atomic” mean in programming?
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381
Here's an example, because an example is often clearer than a long explanation. Suppose foo is...
Look up all descendants of a class in Ruby
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PetrosPetros
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Adb Devices can't find my phone [closed]
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37
I have a Samsung Galaxy and I had the same issue as you. Here's how to fix it:
In device manag...
How can I create a correlation matrix in R?
... data.frame(x1=rnorm(10),
x2=rnorm(10),
x3=rnorm(10))
cor(d) # get correlations (returns matrix)
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Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
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653
This MSDN thread explains how to fix it.
To summarize:
Either disable incremental linking, b...
Visual Studio C# statement collapsing
...g with VS 2010 version:
C# outline
C# outline
2012 (@MSDN)
C# outline
2013 (@MSDN)
C# outline
2015 (@MSDN)
Visual Basic and C# Outliner
The last extension supports only VS 2015 and VS 2017, but it's the most powerful one.
It supports syntax coloring inside collapsed blocks, it is more fault-tole...
Appending the same string to a list of strings in Python
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331
The simplest way to do this is with a list comprehension:
[s + mystring for s in mylist]
No...
Stop Visual Studio from mixing line endings in files
... GvSGvS
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5
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What browsers support HTML5 WebSocket API?
...xie-75:
Chrome 4.0 + 5.0
Safari 5.0.0
HyBi-00/Hixie-76:
Chrome 6.0 - 13.0
Safari 5.0.2 + 5.1
iOS 4.2 + iOS 5
Firefox 4.0 - support for WebSockets disabled. To enable it see here.
Opera 11 - with support disabled. To enable it see here.
HyBi-07+:
Chrome 14.0
Firefox 6.0 - prefixed: MozWebSock...
How do I convert dates in a Pandas data frame to a 'date' data type?
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Use astype
In [31]: df
Out[31]:
a time
0 1 2013-01-01
1 2 2013-01-02
2 3 2013-01-03
In [32]: df['time'] = df['time'].astype('datetime64[ns]')
In [33]: df
Out[33]:
a time
0 1 2013-01-01 00:00:00
1 2 20...