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# carrays.rb: 'circular arrays'
# copyright (c) 2009 by Vincent Fourmond
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details (in the COPYING file).
require 'ctioga2/utils'
require 'ctioga2/log'
# This module contains all the classes used by ctioga
module CTioga2
module Graphics
module Styles
# A CirularArray, i.e an array from which one can extract
# successive elements in a fixed order, and that turns back to
# the first element once all have been used (hence 'circular').
class CircularArray
# The set through which we go
attr_reader :set
# Defines the set of elements we'll be circling through and
# resets the index.
def set=(s)
@set = s
@value = 0
end
def initialize(set)
@set = set
end
# Returns the next element in the array
def next
@value ||= 0
if @value >= @set.size
@value = 0
end
val = @set[@value]
@value += 1
return val
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems