modified-nth ( n seq -- elt )

Vocabulary

sequences.modified

Inputs

n	an object
seq	an object

Outputs

elt

an object

Definition

IN: sequences.modified

GENERIC: modified-nth ( n seq -- elt )

Methods

USING: accessors kernel math sequences sequences.modified ;

M: offset modified-nth [ seq>> nth ] [ n>> + ] bi ;


USING: accessors kernel math sequences sequences.modified ;

M: scaled modified-nth [ seq>> nth ] [ c>> * ] bi ;


USING: accessors kernel math sequences sequences.modified ;

M: summed modified-nth
    seqs>> [ ?nth [ + ] when* ] with 0 swap reduce ;