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Drop unused factor levels in a subsetted data frame
...tion, a new data frame is created. However, the factor variable retains all of its original levels, even when/if they do not exist in the new dataframe.
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Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
I need some code samples (and I also really curious about them) of Scala and Java code which show that Scala code is more simple and concise then code written in Java (of course both samples should solve the same problem).
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How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
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Why git can't do hard/soft resets by path?
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Personally, I think git checkout -- <path> should be replaced with git reset --hard <path>. It makes so much more sense...
– vergenzt
Jun 26 '12 at 13:04
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Cloning a private Github repo
I have a private repository on Github for a project I'm working on. Until now I had only worked on my home desktop, but I just bought a laptop, and am trying to set it up so that I can work on the project from either computer, and push / pull changes.
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Is it possible to print a variable's type in standard C++?
...at I'm recommending below is:
template <typename T> std::string type_name();
which would be used like this:
const int ci = 0;
std::cout << type_name<decltype(ci)>() << '\n';
and for me outputs:
int const
<disclaimer> I have not tested this on MSVC. </disclai...
How to verify if a file exists in a batch file?
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Reminder: IF, EXIST, ELSE, REM, DEL, etc. all work in lowercase as well!
– Terra Ashley
Jul 19 '16 at 23:57
1
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Difference between using bean id and name in Spring configuration file
...ference, 3.2.3.1 Naming Beans:
Every bean has one or more ids (also
called identifiers, or names; these
terms refer to the same thing). These
ids must be unique within the
container the bean is hosted in. A
bean will almost always have only one
id, but if a bean has more than one
i...
Hidden features of Eclipse [closed]
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Don't forget Ctrl+Shift+L, which displays a list of all the keyboard shortcut combinations (just in case you forget any of those listed here).
share
edi...
.keyCode vs. .which
...tE: If not using jQuery, you have to handle this explicitly yourself. I usually do it like this var key = event.which || event.keyCode; That will use event.which if it's defined and not falsey, or event.keyCode if which is undefined or falsey. Technically I should probably do var key = typeof event....