not-a-jpeg-image? ( object -- ? )

Vocabulary

images.jpeg.private

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the not-a-jpeg-image class.

Definition

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

IN: images.jpeg.private

: not-a-jpeg-image? ( object -- ? )
    dup tuple?
    [ layout-of 7 slot \ not-a-jpeg-image eq? ] [ drop f ] if ;