cursor-valid? ( cursor -- ? )

Vocabulary

cursors

Inputs

cursor

an object

Outputs

?

an object

Definition

IN: cursors

GENERIC: cursor-valid? ( cursor -- ? )

Methods

USING: cursors kernel ;

M: end-of-stream cursor-valid? drop f ; inline


USING: accessors cursors kernel sequences ;

M: hash-set-cursor cursor-valid?
    [ n>> ] [ hash-set>> array>> ] bi bounds-check? ; inline


USING: accessors cursors kernel sequences ;

M: hashtable-cursor cursor-valid?
    [ n>> ] [ hashtable>> array>> ] bi bounds-check? ; inline


USING: accessors cursors kernel ;

M: map-cursor cursor-valid?
    [ from>> ] [ to>> ] bi [ cursor-valid? ] both? ; inline


USING: cursors kernel ;

M: numeric-cursor cursor-valid? drop t ; inline


USING: accessors cursors kernel sequences ;

M: sequence-cursor cursor-valid?
    [ n>> ] [ seq>> ] bi bounds-check? ; inline


USING: cursors kernel ;

M: stream-cursor cursor-valid? drop t ; inline


USING: accessors cursors kernel ;

M: zip-cursor cursor-valid?
    [ keys>> ] [ values>> ] bi [ cursor-valid? ] both? ; inline