Vocabulary
syntax

Syntax

UNION: class members... ;

Inputs and outputs

class	a new class word to define
members	a list of class words separated by whitespace

Word description
Defines a union class. An object is an instance of a union class if it is an instance of one of its members.

See also
union-class, define-union-class

Definition

USING: classes.parser classes.union parser ;

IN: syntax

SYNTAX: UNION:
scan-new-class parse-definition define-union-class ;