[R] R equiv of #ifdef?
Kurt.Hornik at ci.tuwien.ac.at
Mon Jun 7 11:44:58 CEST 1999
>>>>> Bill Simpson writes:
> I was wondering if R has an equivalent of #ifdef.
> I want the code to check if a function has been sourced in yet, and if
> not, then source it in. (I know of replace(), which works for
> Here is what I have come up with.
> junk.r contains the code for function thingy2().
> This doesn't work: "missing value where logical needed"
> The error message puzzles me.
> Thanks very much for any help.
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