dec-cursor ( cursor -- cursor' )

Vocabulary

cursors

Inputs

cursor

an object

Outputs

cursor'

an object

Definition

IN: cursors

GENERIC: dec-cursor ( cursor -- cursor' )

Methods

USING: accessors cursors kernel math ;

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


USING: accessors cursors kernel math ;

M: quadratic-cursor dec-cursor
    [ value>> ] [ delta>> ] [ delta2>> ] tri
    [ - [ - ] keep ] keep <quadratic-cursor> ; inline


USING: cursors ;

M: random-access-cursor dec-cursor -1 cursor+ ; inline


USING: accessors cursors kernel math ;

M: sequence-cursor dec-cursor
    [ seq>> ] [ n>> ] bi 1 - <sequence-cursor> ; inline