prefixed

Vocabulary

sequences.prefixed

Definition

USING: sequences ;

IN: sequences.prefixed

TUPLE: prefixed
    { seq sequence read-only initial: f } { elt read-only } ;

Methods

USING: accessors math sequences sequences.prefixed ;

M: prefixed length seq>> length 1 + ;


USING: accessors kernel math sequences.prefixed
sequences.private ;

M: prefixed nth-unsafe
    over zero?
    [ nip elt>> ] [ [ 1 - ] [ seq>> ] bi* nth-unsafe ] if ;