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Sat Aug 11 15:21:18 CEST 2007

wordlist search path

i need to change the 'find' macros so they accept multiple paths..

one think i'm wondering about is how 'force' is implemented.. somehow
i suspect that the thunk is not erased... it probably is..

found it:

(define(force p)
  (unless(promise? p)
    (raise-type-error 'force \promise\ p))
  (let((v(promise-p p)))
    (if(procedure? v)
	(let((v(call-with-values v list)))
	  (when(procedure?(promise-p p))
	    (set-promise-p! p v))
	  (apply values(promise-p p)))
      (apply values v))))

thunk is erased. the only thing to optimize is to not use the values
stuff, but a single return value. probably not worth it.

Haha, something i didn't see at first there: the p is either a
procedure or a list, so i can't make a single atom of it, because it
could be a procedure :)


another trick:

creating the '<language>:' macro at the spot where the '(language)'
dictionary is created and populated with primitives uses the module
dependency system to somehow enforce dependencies on namespaces, which
are not checked.

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