cursor- ( cursor n -- cursor' )

Vocabulary

cursors

Inputs

cursor	an object
n	an object

Outputs

cursor'

an object

Definition

IN: cursors

GENERIC#: cursor- 1 ( cursor n -- cursor' )

Methods

USING: accessors cursors kernel math ;

M: linear-cursor cursor-
    [ [ value>> ] [ delta>> ] bi ] dip [ * - ] keep
    <linear-cursor> ; inline


USING: cursors math ;

M: random-access-cursor cursor- neg cursor+ ; inline


USING: accessors cursors kernel math ;

M: sequence-cursor cursor-
    [ [ seq>> ] [ n>> ] bi ] dip - <sequence-cursor> ; inline