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Typed callcc in a stackbased languageI have been playing with the idea of adding a callwithcurrentcontinuation primitive ( callcc : ('A ('A ('A > 'B) > 'B) > 'B) The formal semantics would be: [$A [$B] callcc $C] == [$A [$C] $B] An example usage would be: >> define do_twice { dup [apply] dip apply } >> define test { 1 [do_twice] callcc inc } >> test stack: 3 My questions are: am I doing this right? Does the type look correct? Is it a good idea to add continuations to Cat? Thanks in advance! By cdiggins at 20070604 21:24  LtU Forum  previous forum topic  next forum topic  other blogs  9669 reads

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