[plt-scheme] simple scheme idiom for generalized maximum?

On Sep 23, 2009, at 11:12 AM, Matthias Felleisen wrote:

>
> (define (longest-string los)
>  (first (sort los > #:key string-length)))
>

I thought of that, but it seems like the wrong program: I don't want  
the list sorted, I just want the maximum.

I suppose that from a purely declarative standpoint, you could argue  
that this doesn't necessarily imply extra computation, but that seems  
like a stretch.

John

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