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Convert data.frame column format from character to factor
...df, is.character, as.factor)
# select character columns 'char1', 'char2', etc. to factor:
df <- mutate_at(df, vars(char1, char2), as.factor)
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Why is Lisp used for AI? [closed]
...pes usually are written in a younger dynamic language (Perl, Python, Ruby, etc) and implementations of successful research is usually in C or C++ (sometimes Java).
If you're curious about the 70's...well, I wasn't there. But I think Lisp was successful in AI research for three reasons (in order of ...
Why can't I use the 'await' operator within the body of a lock statement?
...simple, but not everyone knows how to deal with generics, Func,Task types, etc.Still great answer though. If you have time, add the return functionality. Thanks again
– Nikolai
Jun 29 at 13:16
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git replacing LF with CRLF
... installation and stored in system-wide gitconfig (%ProgramFiles(x86)%\git\etc\gitconfig). Also there're (cascading in the following order):
– "global" (per-user) gitconfig located at ~/.gitconfig, yet another
– "global" (per-user) gitconfig at $XDG_CONFIG_HOME/git/config or $HOME/....
Position Relative vs Absolute?
...parent needs to be 'not static' - so the parent can be relative, absolute, etc...the advantage of using parent-relative, is that it doesn't remove the element from the doc.
– Fernando
Sep 30 '13 at 0:38
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How to enumerate an enum with String type?
... I wonder how one might iterate through other types (string, custom types, etc.).
– Jay Imerman
Jun 17 '14 at 1:57
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How do you use the Immediate Window in Visual Studio?
... results to variables if you want to do further evaluations, calculations, etc.:
? string msg = foo.GetMessage();
"hello"
? msg + " there!"
"hello there!"
Furthermore, if you don’t even want to declare a variable name for a new object and just want to run one of its methods/functions then do th...
What is the effect of encoding an image in base64?
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Takeaway = There's some advantage to encoding and gzipping your UI icons, etc, but unwise to do this for larger images.
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How unique is UUID?
...y because of randomness? Or there are other factors? (e.g. time stamp, ip, etc)
– Weishi Zeng
Jun 5 '16 at 15:54
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How to remove from a map while iterating it?
...call, or to swap it to a preincrement "because that's just a style thing", etc.
– Dewi Morgan
Jan 29 '15 at 23:11
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