Sha256: 54f81e5db72b17dfcf6fd30cc766ff36ed6d9b9be2612594c57cd8a6b9638831
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Size: 1.13 KB
Versions: 45
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Stored size: 1.13 KB
Contents
# Copyright (c) 2008 Michael Fellinger m.fellinger@gmail.com
# All files in this distribution are subject to the terms of the Ruby license.
require(File.join(File.dirname(__FILE__), 'blankslate'))
# Basically an Set, but with Order, ain't that obivous?
class OrderedSet < BlankSlate
def self.[](*args)
new(*args)
end
# Create new instances, optionally pass the first set
def initialize(*args)
if args.size == 1
@set = args.shift
else
@set = *args
end
@set ||= []
@set = [@set] unless ::Array === @set
@set.uniq!
end
%w[ push unshift << ].each do |meth|
class_eval %[
def #{meth} *args
@set.delete(*args)
@set.#{meth}(*args)
end
]
end
def []= *args
@set.map! do |e|
if ::Array === args.last
args.last.include?(e) ? nil : e
else
args.last == e ? nil : e
end
end
@set.__send__(:[]=, *args)
@set.compact!
end
# Delegate everything, but controlled, keep elements unique.
# Warning, this is not really atomic.
def method_missing(meth, *args, &block)
@set.__send__(meth, *args, &block)
end
end
Version data entries
45 entries across 45 versions & 5 rubygems