constructed type

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constructed type



A type formed by applying some type constructor function to one or more other types. The usual constructions are functions: t1 -> t2, products: (t1, t2), sums: t1 + t2 and lifting: lift(t1).

(In LaTeX, the lifted type is written with a subscript perp).

See also algebraic data type, primitive type.

(1995-02-03)