[R] Using str() in a function.

[David Winsemius]

On Jul 15, 2011, at 1:31 PM, andrewH wrote:

> Thanks, everybody, this has been very edifying. One last question:
>
> It seems that sometimes when a function returns something and you  
> don't
> assign it, it prints to the console, and sometimes it doesn't. I'm  
> not sure
> I understand which is which. My best current theory is that, if the  
> function
> returns NULL, by itself and not as part of some larger object, it  
> does not
> print it, but non-null values are printed. Is that correct?

I think you should start testing your theories:

fn <- function() return(NULL)
fn()

--

David Winsemius, MD
West Hartford, CT