[R] Error using return() function inside for loop and if statement

R. Michael Weylandt michael.weylandt at gmail.com
Wed Apr 11 05:26:23 CEST 2012

The error message should make it pretty clear -- you aren't inside a
function so you can't return() a value which is, by definition, what
functions (and only functions) do.** Not sure there's a great
reference for this though beyond the error message....

Incidentally, what are you trying to do here? The code doesn't really
make much sense to me -- do you just want samples = 5*(1:10) ?


** I think there's a subtlety glossed over herein: functional
programming purists can wince silently if they so choose.

On Tue, Apr 10, 2012 at 11:17 PM, C W <tmrsg11 at gmail.com> wrote:
> Dear all, I get an error using the return function.  The following is a
> simpler version.
> for (j in 1:10)
> {
>    samples = 5*j
>    return(samples)
> }
> Error: no function to return from, jumping to top level
> Similar warning happens with if statement.
> Why do I get an error?  print() works fine.  I don't see anywhere in the
> documentation says that return() is not allowed inside for loop.
> I know the list is for advanced computation topics, and I don't want to
> bother the list too much.  Where should I look for things like this in the
> future?
> ?return() nor the R documentation does not mention any of this.
> Bob
>        [[alternative HTML version deleted]]
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