singleton-heap? ( object -- ? )

Vocabulary

persistent.heaps.private

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the singleton-heap class.

Definition

USING: accessors kernel ;

IN: persistent.heaps.private

: singleton-heap? ( object -- ? )
    dup branch?
    [ [ left>> ] [ right>> ] bi [ empty-heap? ] both? ]
    [ drop f ] if ;