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In C/C++ what's the simplest way to reverse the order of bits in a byte?
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Where should Rails 3 custom validators be stored?
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answered Jul 7 '11 at 12:03
gbcgbc
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Selecting data frame rows based on partial string match in a column
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What is the difference between NaN and None?
...= pd.Series([1, None], dtype=object)
s_good = pd.Series([1, np.nan])
In [13]: s_bad.dtype
Out[13]: dtype('O')
In [14]: s_good.dtype
Out[14]: dtype('float64')
Jeff comments (below) on this:
np.nan allows for vectorized operations; its a float value, while None, by definition, forces object ty...
PermGen elimination in JDK 8
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362
Reasons of ignoring these argument is permanent generation has been removed in HotSpot for JDK...
Enable Vim Syntax Highlighting By Default
... system (Arch Linux, and Mac, thanks @totophe), it's in /usr/share/vim/vim73.
On Windows, it's in \Program Files\Vim\vim73.
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How do I convert a String to an InputStream in Java?
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1433
Like this:
InputStream stream = new ByteArrayInputStream(exampleString.getBytes(StandardCharse...
How to get row from R data.frame
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130
x[r,]
where r is the row you're interested in. Try this, for example:
#Add your data
x <...
Java 8 functional interface with no arguments and no return value
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