[r6rs-discuss] Expansion order [was: Now, where were we?]
c_sloma at gmx.de
Tue Feb 24 15:24:57 EST 2009
On Tuesday 24 February 2009 21:01:58 Andre van Tonder wrote:
> On Tue, 24 Feb 2009, Christian Sloma wrote:
> >> Where is the burden on macro-free programs? (This is not meant to be
> >> argumentative---I am genuinely trying to understand this criticism).
> > Just one example: R6RS disallows the mixing of expression and definitions
> > in libraries.
> This restriction has nothing to do with macros, though. Expressions could
> have been allowed easily, as you will see if you consider that even in R6RS
> you can get the effect of an interleaved expression by simply making it the
> RHS of a dummy definition.
Note that it *has* to be inside a define, as the define marks the body to be
delayed until all off the other definitions are evaluated.
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