On 5/8/07, Graham Fawcett <[EMAIL PROTECTED]> wrote:
On 5/8/07, Graham Fawcett <[EMAIL PROTECTED]> wrote:
> Here's a cheap-and-dirty way to do it; it's not perfect (especially
> because there's some redundant typing involved) but you can have it
> today:
>
> (define-macro (eval-with-locals locals expr)
> `((eval '(lambda ,locals ,(eval expr))) ,@locals))
Try this instead:
(define-macro (eval-with-locals locals expr)
`((eval (list 'lambda ',locals ,expr)) ,@locals))
Example:
(define z 1000)
(let ((x 10)
(y 100)
(expr '(+ x y z)))
(eval-with-locals (x y) expr))
==> 1110
Graham
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