Dear all,
Just one last question. There seems to be no problem in writing
> z = system.time(y <- f(x))
or
> z <- system.time(y <- f(x))
Then z contains the named vector of the elapsed times, and y the value of
the function f(x).
Am I right ?
Thank you very much,
Gustave
2010/5/17 Alexander Shenkin <ashen...@ufl.edu>
> You could also put the call to system.time inside the function itself:
>
> f = function(x) {
> system.time({
> ... #function's code
> ret_val = ...
> }); flush.console();
> return ret_val;
> }
>
> i s'pose you'd miss out on the time taken to jump to the function code,
> return the value, etc, but for functions that are heavy at all, that
> wouldn't trip you up.
>
> allie
>
> On 5/17/2010 2:06 PM, Barry Rowlingson wrote:
> > On Mon, May 17, 2010 at 6:24 PM, Peter Ehlers <ehl...@ucalgary.ca>
> wrote:
> >
> >
> >> Try
> >> system.time(y <- f(x))
> >>
> >> and see ?"=".
> >>
> >> -Peter Ehlers
> >>
> > Ah ha. That explains the curly brackets I saw in a posting with
> > system.time on stack overflow just now:
> >
> > system.time({y=f(x)})
> >
> > works as expected since the {} pair make a new code block. Also you
> > can then time more than one statement:
> >
> > system.time({y=f(x);z=g(y)})
> >
> > - gives the total time for f(x) and g(y).
> >
> > Barry
> >
> > ______________________________________________
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> >
>
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> PLEASE do read the posting guide
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