product-sequence
Product sequences

Next:

<product-sequence> ( sequences -- product-sequence )

Vocabulary
sequences.product

Class description
A class of virtual sequences that present the cartesian product of their underlying set of sequences. Product sequences are constructed with the <product-sequence> word.

Examples

USING: arrays prettyprint sequences.product ; { { 1 2 3 } { "a" "b" "c" } } <product-sequence> >array .
{ { 1 "a" } { 1 "b" } { 1 "c" } { 2 "a" } { 2 "b" } { 2 "c" } { 3 "a" } { 3 "b" } { 3 "c" } }

See also
<product-sequence>

Definition

USING: arrays ;

IN: sequences.product

TUPLE: product-sequence
    { sequences array read-only initial: { } }
    { lengths array read-only initial: { } } ;

Methods

USING: accessors sequences sequences.product ;

M: product-sequence length lengths>> product ;


USING: accessors kernel sequences sequences.product
sequences.product.private ;

M: product-sequence nth
    [ lengths>> product-ns ] [ sequences>> product-nths ] bi ;