At 2001-11-02 02:21, Jon Fairbairn wrote:

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What mechanism of transmiting parameters does Haskell implement?

By value.

Yes, though one might equally say that they are passed by reference, since in

g = let f x = x+x z = factorial 1000 in f z * z

the 'first' instance of x forces z to be evaluated and updated, the second instance of x uses this updated value, and so does the final occurrence of z.

Oh, yeah, they're passed by thunk. I forgot about the laziness. -- Ashley Yakeley, Seattle WA