single-combination? ( object -- ? )

Vocabulary

generic.single

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the single-combination class.

Definition

USING: classes.tuple.private kernel slots.private ;

IN: generic.single

: single-combination? ( object -- ? )
    dup tuple?
    [ layout-of 7 slot \ single-combination eq? ] [ drop f ] if
    ;