prolog? ( object -- ? )

Vocabulary

xml.data

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the prolog class.

Definition

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

IN: xml.data

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