Re: Eval in Haskell

1 Jun 2003


      In article <20030601235255.GA4498@la.iki.fi>, Lauri Alanko  
wrote:
...
Nevertheless, this abomination is supported even by some scheme
implementations:
guile> (define local-environment (procedure->syntax (lambda (exp env) env)))
guile> (define (eval-where-x-bound exp)
... (let ((x 'foo)) (local-eval exp (local-environment))))      
guile> (eval-where-x-bound '(list 'x x))
(x foo)
Guile seems to be a bit "sloppy" in general. I think it just keeps a 
dictionary of symbol bindings and passes it around at runtime.

guile> (eval '(define b 5))
guile> b
5

-- 
Ashley Yakeley, Seattle WA