b-rep-not-empty? ( object -- ? )

Vocabulary

euler.b-rep

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the b-rep-not-empty class.

Definition

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

IN: euler.b-rep

: b-rep-not-empty? ( object -- ? )
    dup tuple?
    [ layout-of 7 slot \ b-rep-not-empty eq? ] [ drop f ] if ;