1 ! Copyright (C) 2009 Joe Groff.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: assocs help.markup help.syntax quotations sequences ;
7 { $class-description "A class of virtual sequences that present the cartesian product of their underlying set of sequences. Product sequences are constructed with the " { $link <product-sequence> } " word." }
9 { $example "USING: arrays prettyprint sequences.product ;
10 { { 1 2 3 } { \"a\" \"b\" \"c\" } } <product-sequence> >array .
23 HELP: <product-sequence>
24 { $values { "sequences" sequence } { "product-sequence" product-sequence } }
25 { $description "Constructs a " { $link product-sequence } " over " { $snippet "sequences" } "." }
27 { $example "USING: arrays prettyprint sequences.product ;
28 { { 1 2 3 } { \"a\" \"b\" \"c\" } } <product-sequence> >array ."
41 { product-sequence <product-sequence> } related-words
44 { $values { "sequences" sequence } { "quot" { $quotation ( ... seq -- ... value ) } } { "sequence" sequence } }
45 { $description "Calls " { $snippet "quot" } " for every element of the cartesian product of " { $snippet "sequences" } " and collects the results from " { $snippet "quot" } " into an output sequence." }
46 { $notes { $snippet "[ ... ] product-map" } " is equivalent to, but more efficient than, " { $snippet "<product-sequence> [ ... ] map" } "." } ;
49 { $values { "sequences" sequence } { "quot" { $quotation ( ... seq -- ... value ) } } { "exemplar" sequence } { "sequence" sequence } }
50 { $description "Calls " { $snippet "quot" } " for every element of the cartesian product of " { $snippet "sequences" } " and collects the results from " { $snippet "quot" } " into an output sequence the same type as the " { $snippet "exemplar" } " sequence." } ;
52 HELP: product-map>assoc
53 { $values { "sequences" sequence } { "quot" { $quotation ( ... seq -- ... key value ) } } { "exemplar" assoc } { "assoc" assoc } }
54 { $description "Calls " { $snippet "quot" } " for every element of the cartesian product of " { $snippet "sequences" } " and collects the results from " { $snippet "quot" } " into an output assoc." } ;
57 { $values { "sequences" sequence } { "quot" { $quotation ( ... seq -- ... ) } } }
58 { $description "Calls " { $snippet "quot" } " for every element of the cartesian product of " { $snippet "sequences" } "." }
59 { $notes { $snippet "[ ... ] product-each" } " is equivalent to, but more efficient than, " { $snippet "<product-sequence> [ ... ] each" } "." } ;
61 { product-map product-each } related-words
63 ARTICLE: "sequences.product" "Product sequences"
64 "The " { $vocab-link "sequences.product" } " vocabulary provides a virtual sequence and combinators for manipulating the cartesian product of a set of sequences."
74 ABOUT: "sequences.product"