On Thu, 23 Oct 2008, Shawn Rutledge wrote:
#;10> (begin (define update #f) (let ([v 'foo]) (set! update (lambda
(d s) (printf "~s was ~s~%" d (eval d)) (set! d s)))))
#;11> (update 'v 'bar)
Error: unbound variable: v
What I'm trying to do is pass the name of a let-bound variable in to a
lambda defined within the let context, in order to tell that lambda to
access that let-bound variable. eval doesn't work because it looks in
the outer environment, right? (in which v is not bound)
unless there's some way to add new bindings to an arbitrary env (ie, extend
a let at runtime), then youd be better served by either explicit setting
procs for each let-bound var, or by having some form of dispatch from a
single name.
-elf
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