rmk216 wrote:
Would anybody happen to know where I can find out more about the
underscore (operator?) in Oz?
Yup, read any book on the basics of Prolog. Its use is just about
identical.
Basically the underscore is an uninstantiated, nameless variable, that
can unify with anything without having any further effect (i.e. it is
not used subsequently). It is not an operator.
In extremely oversimplified terms you can consider it to mean "anything
can go here"
E.g
fun {Head H|_} H end
fun {Tail _|T} T end
Try {Browse {Head [1 2 3]}} and {Browse {Tail [1 2 3]}} and you'll get
the idea.
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