8 Sep
2010
8 Sep
'10
8:08 a.m.
On Wed, Sep 08, 2010 at 07:57:14AM -0400, Patrick LeBoutillier wrote:
Hi all,
I've been reading the book "To Mock A Mockingbird" by Robert Smullyan recently and I don't get the part about the birds at all. I think I understand that a bird is a function, but what would it's type be in Haskell?
It says that birds hear a call and answer by another call, so I thought String -> String or something like that. But if you have a mockingbird that can answer what a bird would answer to itself, that means that it's input must contain the other bird... Do all the birds have the same type?
No, each bird has its own type; each bird represents some particular combinator (= polymorphic function). -Brent