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Convert data.frame columns from factors to characters
... data.frame(lapply(bob, as.character), stringsAsFactors=FALSE)
This will convert all variables to class "character", if you want to only convert factors, see Marek's solution below.
As @hadley points out, the following is more concise.
bob[] <- lapply(bob, as.character)
In both cases, lapp...
Java - Method name collision in interface implementation
...son (usually optimization is the only valid reason) you want to be able to convert it to Beta, you could make a sub-interface of Alfa with Beta asBeta() in it.
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How to convert an array to object in PHP?
How can i convert an array like this to object?
34 Answers
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What is the result of % in Python?
...ision of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14 equals 4*0.7 + 0.34.) The modulo operator always yi...
How do I invert BooleanToVisibilityConverter?
I'm using a BooleanToVisibilityConverter in WPF to bind the Visibility property of a control to a Boolean . This works fine, but I'd like one of the controls to hide if the boolean is true , and show if it's false .
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INSERT with SELECT
...RACTER SET utf8) COLLATE utf8_bin;
This conversion (CAST() is synonym of CONVERT() ) is very useful if your tables have different character sets on the same table column (which can potentially lead to data loss if not handled properly).
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Permanently add a directory to PYTHONPATH?
Whenever I use sys.path.append , the new directory will be added. However, once I close python, the list will revert to the previous (default?) values. How do I permanently add a directory to PYTHONPATH ?
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Style input element to fill remaining width of its container
...bably, though, it will be a long time before I get to try this. I'm on the sys admin team now, don't do as much web stuff any more.
– Joel Coehoorn
Jul 9 '14 at 13:28
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Sort a list of tuples by 2nd item (integer value) [duplicate]
... "the code"` then I got 'human-eye' results that you spell out, as well as sys clock times that were faster. Still not sure why this is, but it was reproducible. I gather it has something to do with the overhead of loading in the module's, but still does not quite make since to me, just yet.
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ProcessStartInfo hanging on “WaitForExit”? Why?
...in a similar situation. I was redirecting StandardError for no reason when converting with ffmpeg in a process, it was writting enough in the StandardError stream to create a deadlock.
– Léon Pelletier
Oct 1 '12 at 7:29
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