This has been discussed several times on this list. Note that line 2 of
paragraph 2 of help("if") says the following :
" In particular, you should not have a newline between '}' and 'else' to
avoid a syntax error in entering a 'if ... else' construct at the
keyboard or via 'source'. "
On Sun, 2004-06-20 at 17:00, [EMAIL PROTECTED] wrote:
> I ran into an interesting oddity of R,
> if (0) { print(1); }
> else { print(2); }
> is a syntax error, while
> if (0) { print(1); } else { print(2); }
> or
> if (0) { print(1);
> } else { print(2); }
> is not. I presume it has to do with the duality of the newline
> functioning as an end of command (;) character, though it still seems a
> bit odd, and it took me a while to figure out what was wrong. I
> eventually figured out that to resolve this ambiguity, I would guess
> that ifelse() would be a preferred function.
>
> I wanted to look up the internal R documentation for if via "?if", but
> this does not work. making the latter work would be a good idea.
>
> regards, /iaw
> ---
> ivo welch
> professor of finance and economics
> brown / nber / yale
>
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