persistent-vector? ( object -- ? )

Vocabulary
persistent.vectors

Inputs and outputs

object	an object
?	a boolean

Word description
Tests if the object is an instance of the persistent-vector class.

Definition

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

IN: persistent.vectors

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