On Tue 06 Dec 2011 20:05, "Chris K. Jester-Young" <cky...@gmail.com> writes:
> On Tue, Dec 06, 2011 at 08:48:01AM +0100, Marijn wrote: >> Couldn't help but wonder why they don't return the value of the last >> body form, so I looked around a bit and both CLHS[1] and my racket >> REPL seem to agree that they should: > [...] >> Is there some other source that suggests that the return value should >> be unspecified? > > This isn't so much because the return value is somehow specified or > useful, but rather to avoid breaking tail position. See this discussion > I had with Eli Barzilay where this is explained: > > http://rotty.yi.org/irclogs/freenode/%23scheme/2011-11-02/#e208 > > (Start at the 07:24 timestamp if the fragment reference isn't working.) Ah, OK. Indeed this is a very good point, I didn't realize this before. Hummm. Andy -- http://wingolog.org/
