cow? ( object -- ? )

Vocabulary

rosetta-code.bulls-and-cows

Inputs and outputs

object	an object
?	a boolean

Word description

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

Definition

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

IN: rosetta-code.bulls-and-cows

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