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Contents
######################################
# WARNING! Highly expiremental code! #
######################################
# = autoarray.rb
#
# == Copyright (c) 2005 Brian Schröder
#
# Ruby License
#
# This module is free software. You may use, modify, and/or redistribute this
# software under the same terms as Ruby.
#
# 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.
#
# == Authors and Contributors
#
# * Brian Schröder
#
# = AutoArray
#
# An Array that automatically expands dimensions as needed.
#
# a = Autoarray.new
# a[1][2][3] = 12
# a #=> [nil, [nil, nil, [nil, nil, nil, 12]]]
# a[2][3][4] #=> []
# a #=> [nil, [nil, nil, [nil, nil, nil, 12]]]
# a[1][-2][1] = "Negative"
# a #=> [nil, [nil, [nil, "Negative"], [nil, nil, nil, 12]]]
class Autoarray < Array
def initialize(size=0, default=nil, update = nil, update_index = nil)
super(size, default)
@update, @update_index = update, update_index
end
def [](k)
if -self.length+1 < k and k < self.length
super(k)
else
Autoarray.new(0, nil, self, k)
end
end
def []=(k, v)
@update[@update_index] = self if @update and @update_index
super
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TC_Autoarray
def test_001
a = Autoarray.new
assert_equal( 12, a[1][2][3] = 12 )
assert_equal( [nil, [nil, nil, [nil, nil, nil, 12]]], a )
assert_equal( [], a[2][3][4] )
assert_equal( [nil, [nil, nil, [nil, nil, nil, 12]]], a )
assert_equal( "Negative", a[1][-2][1] = "Negative" )
assert_equal( [nil, [nil, [nil, "Negative"], [nil, nil, nil, 12]]], a )
end
end
=end
Version data entries
10 entries across 10 versions & 1 rubygems