1 ! Copyright (C) 2008 Doug Coleman.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: help.markup help.syntax io.streams.string sequences
4 math kernel quotations ;
7 HELP: <circular-string>
10 { "circular" circular } }
11 { $description "Creates a new circular string object. A circular string is a string object that can be accessed out of bounds and the index will wrap around to the start of the string." } ;
16 { "circular" circular } }
17 { $description "Creates a new " { $link circular } " object that wraps an existing sequence. By default, the index is set to zero." } ;
19 HELP: <growing-circular>
21 { "capacity" integer }
22 { "growing-circular" growing-circular } }
23 { $description "Creates a new growing-circular object." } ;
25 HELP: change-circular-start
27 { "n" integer } { "circular" circular } }
28 { $description "Changes the start index of a circular object." } ;
31 { $description "A tuple class that stores a sequence and its start index." } ;
33 HELP: growing-circular
34 { $description "A circular sequence that is growable." } ;
38 { "elt" object } { "circular" circular } }
39 { $description "Pushes an element to a " { $link circular } " object." } ;
41 HELP: growing-circular-push
43 { "elt" object } { "circular" circular } }
44 { $description "Pushes an element onto a " { $link growing-circular } " object." } ;
48 { "circular" circular } }
49 { $description "Advances the start index of a circular object by one." } ;
53 { "circular" circular }
56 { $description "Calls " { $snippet "quot" } " on each element of the sequence until each call yields " { $link f } " in succession." } ;
60 { "circular" circular }
63 { $description "Calls " { $snippet "quot" } " on each element of the sequence until one call yields " { $link f } "." }
64 { $notes "This rotates the " { $link circular } " object after each call, so the next element to be applied will always be the first element." } ;
66 ARTICLE: "circular" "Circular sequences"
67 "The " { $vocab-link "circular" } " vocabulary implements the " { $link "sequence-protocol" } " to allow an arbitrary start index and wrap-around indexing." $nl
68 "Creating a new circular object:"
74 "Changing the start index:"
79 "Pushing new elements:"
84 "Iterating over a circular until a stop condition:"
85 { $subsections circular-while circular-loop } ;