The most general ef="module.php?name=Lexikon&file=search&eid=1&query=type">type of an expression. For example, the following are all valid types for the ef="module.php?name=Lexikon&file=search&eid=1&query=lambda abstraction">lambda abstraction ( x . x): Int -> Int Bool -> Bool (a->b) -> (a->b) but any valid type will be an instance of the principal type: a -> a. An instance is derived by substituting the same type expression for all occurences of some ef="module.php?name=Lexikon&file=search&eid=1&query=type variable">type variable. The principal type of an expression can be computed from those of its subexpressions by Robinson' s ef="module.php?name=Lexikon&file=search&eid=1&query=unification">unification ef="module.php?name=Lexikon&file=search&eid=1&query=algorithm">algorithm. (1994-12-16)

e="border-width:thin; border-color:#333333; border-style:dashed; padding:5px;" align="left">In addition suitable contents:
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