type-union

Returns the union of two or more types. The instances of the returned type are the instances of all the types. The type returned is not instantiable.

define constant $my-enumerated-type =
                    type-union(singleton(#"one"),
                               singleton(#"two"),
                               singleton(#"three"),
                               singleton(#"four"),
                               singleton(#"five"))

Exported from

Module common-dylan
Module Dylan

Arguments

#rest types

Instances of <object>.

Values

type	An instance of <type>.

Whenever possible, we have tried to keep the Dylan module pristine and unextended, preferring to add our extensions to separate modules or libraries.