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R memory management / cannot allocate vector of size n Mb
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Consider whether you really need all this data explicitly, or can the matrix be sparse? There is good support in R (see Matrix package for e.g.) for sparse matrices.
Keep all other processes and objects in R to a minimum when y...
How do I find all of the symlinks in a directory tree?
... Make that ls -laR /path/to/folder | grep ^l if you also want to process "hidden" dot folders ...
– wimvds
Sep 13 '13 at 9:58
2
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How to keep index when using pandas merge
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Nice! To avoid explicitly specifying the index-name I use a.reset_index().merge(b, how="left").set_index(a.index.names).
– Truls
Dec 8 '17 at 9:21
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chai test array equality doesn't work as expected
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You're right, I didn't read well. I thought it's just another API change.
– Ludder
Dec 2 '14 at 15:19
6
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TypeError: method() takes 1 positional argument but 2 were given
...led on, so there needs to be some way for that object to be referred to inside the method. By convention, this first argument is called self inside the method definition:
class MyNewClass:
def method(self, arg):
print(self)
print(arg)
If you call method("foo") on an instance ...
With GitHub how do I push all branches when adding an existing repo?
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The accepted answer isn't quite right, or at least it didn't work for me. I needed to specify the remote repo as well, eg:
git push origin --all
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Can I use multiple “with”?
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Try:
With DependencedIncidents AS
(
SELECT INC.[RecTime],INC.[SQL] AS [str] FROM
(
SELECT A.[RecTime] As [RecTime],X.[SQL] As [SQL] FROM [EventView] AS A
CROSS JOIN [Incident] AS X
WHERE
patindex(...
PDO closing connection
...nnections in a script that runs for a long period you can purposely (or accidentally) have connections killed with a timeout (e.g. in my.ini), or for a number of other reasons. When connecting or running a query, catch any error, and if it is "MySQL has gone away", attempt to connect again or run th...
Unit testing code with a file system dependency
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void DoIt(IZipper zipper, IFileSystem fileSystem, IDllRunner runner)
{
string path = zipper.Unzip(theZipFile);
IFakeFile file = fileSystem.Open(path);
runner.Run(file);
}
While you can pass in mocks, there's no logic in the method to test. If you were to attempt a unit test for this it m...
Setting the Vim background colors
... that actually why I posted my question here. Even dark colorschemes didn't affect my default background color.
– Maksim Vi.
Jul 13 '09 at 3:02
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