Edward Faulkner ha scritto:
> Here is a functional sodoku solver that uses continuations.  Note that
> it works because all the functions called within the chooser are
> purely functional -- they do not alter their arguments, and their
> value does not depend on any saved state.

Sorry, I don't understand what you mean here: IMHO this thing just works 
because of side effects in #failure and in the proc in #choose