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Confusion between factor levels and factor labels
...seems to be a difference between levels and labels of a factor in R.
Up to now, I always thought that levels were the 'real' name of factor levels, and labels were the names used for output (such as tables and plots). Obviously, this is not the case, as the following example shows:
...
C programming in Visual Studio
...f your project and the Location you want it to install to, then click Ok. Now wait for the project to be created.
Next under Solutions Explorer right click Source Files, select Add then New Item. You should see something like this:
Rename Source.cpp to include a .c extension (Source.c for ex...
How do I tell git to always select my local version for conflicted merges on a specific file?
...nit
Initialized empty Git repository in F:/prog/git/test/copyMerge/.git/
Now, let's make two files, which will both have conflicts, but which will be merged differently.
echo a > dirWithConflicts\a.txt
echo b > dirWithCopyMerge\b.txt
git add -A
git commit -m "first commit with 2 directories...
Using MemoryStore in production
... sessionStore.get(sessions[i], function() {} );
}
});
}
Now just call sessionCleanup periodically via setInterval() and you have automatic garbage collection for expired sessions. No more memory leaks.
sha...
Big-O for Eight Year Olds? [duplicate]
...rd time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't grow because there are more items. And an O(n) operation would mean that you would perform a se...
Maven-like dependency management for C++? [closed]
...ce a DLL and different teams of developers work on each of the subproject. Now if I want to build the main project, is there a way to avoid having to build all the subprojects by myself?
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In Bash, how can I check if a string begins with some value?
...d also have suggested the Bash-Hackers' wiki, but it's been down for a bit now).
– Charles Duffy
Oct 21 '17 at 23:19
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Remove insignificant trailing zeros from a number?
...
@w00t Oh, sorry, I understand now. I was the way I tested when I made mine (see link above). Yours doesn't fail when you use toFixed, because the number is guaranteed to have a dot, but it was failing in my tests because I wanted the regex to work for any...
git-diff to ignore ^M
...inst older revisions of these files. Converting line endings starting from now on does not solve the problem with older revisions :-/
– neoneye
Dec 11 '09 at 18:14
67
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/etc/apt/sources.list" E212: Can't open file for writing
...udo vim FILE. Or if you don't want to leave your existing vim session (and now have proper sudo rights), you can issue:
:w !sudo tee % > /dev/null
Which will save the file.
HTH
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