MIXIN:
Factor handbook » The language » Objects » Classes » Mixin classes

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Vocabulary
syntax

Syntax

MIXIN: class

Inputs and outputs

class

a new class word to define

Word description
Defines a mixin class. A mixin is similar to a union class, except it has no members initially, and new members can be added with the INSTANCE: word.

Examples
The sequence and assoc mixin classes.

See also
mixin-class, define-mixin-class, add-mixin-instance, INSTANCE:

Definition

USING: classes.mixin classes.parser ;

IN: syntax

SYNTAX: MIXIN: scan-new-class define-mixin-class ;