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Large, persistent DataFrame in pandas
... shouldn't run out of memory, but there are currently memory problems with read_csv on large files caused by some complex Python internal issues (this is vague but it's been known for a long time: http://github.com/pydata/pandas/issues/407).
At the moment there isn't a perfect solution (here's a t...
WITH (NOLOCK) vs SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
... should use WITH (NOLOCK) as opposed to SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
6 Answers
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Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
...d again. It will however, be accessed (via get(key) only) from multiple threads. Is it safe to use a java.util.HashMap in this way?
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Fast way to get image dimensions (not filesize)
...oo long to get the size with ImageMagick's identify because it obviously reads the images as a whole first.
8 Answers
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Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
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... and your Xcode will not be able to build to your device if you have already updated it to 5.1 because it won't be on that version of Xcode's approved SDKs
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Read/write to Windows registry using Java
How is it possible to read/write to the Windows registry using Java?
24 Answers
24
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Reading a simple text file
I am trying to read a simple text file in my sample Android Application. I am using the below written code for reading the simple text file.
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Reading/writing an INI file
Is there any class in the .NET framework that can read/write standard .ini files:
16 Answers
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Why do enum permissions often have 0, 1, 2, 4 values?
...e they are powers of two and I can do this:
var permissions = Permissions.Read | Permissions.Write;
And perhaps later...
if( (permissions & Permissions.Write) == Permissions.Write )
{
// we have write access
}
It is a bit field, where each set bit corresponds to some permission (or wha...
In Perl, how can I read an entire file into a string?
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Add:
local $/;
before reading from the file handle. See How can I read in an entire file all at once?, or
$ perldoc -q "entire file"
See Variables related to filehandles in perldoc perlvar and perldoc -f local.
Incidentally, if you can put you...