From: Nobuhiro IMAI <nov@...>
Date: 2012-03-16T09:13:35+09:00
Subject: [ruby-dev:45370] [ruby-trunk - Bug #6152][Open] Enumerator::Lazy#take


Issue #6152 has been reported by Nobuhiro IMAI.

----------------------------------------
Bug #6152: Enumerator::Lazy#take
https://bugs.ruby-lang.org/issues/6152

Author: Nobuhiro IMAI
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 
ruby -v: ruby 2.0.0dev (2012-03-16 trunk 35049) [x86_64-linux]


=begin
以下はテストにある Step クラスですが、

 class Step
   include Enumerable
   attr_reader :current, :args
 
   def initialize(enum)
     @enum = enum
     @current = nil
     @args = nil
   end
 
   def each(*args)
     @args = args
     @enum.each{|i| @current = i; yield i}
   end
 end
 
 a = Step.new(1..10)
 a.take(5).first         # => 1
 a.current               # => 5
 a.lazy.take(5).first    # => 1
 a.current               # => 1
 a.take(5).first(5)      # => [1, 2, 3, 4, 5]
 a.current               # => 5
 a.lazy.take(5).first(5) # => [1, 2, 3, 4, 5]
 a.current               # => 5
 a.take(5).to_a          # => [1, 2, 3, 4, 5]
 a.current               # => 5
 a.lazy.take(5).to_a     # => [1, 2, 3, 4, 5]
 a.current               # => 6

最後の例で current が 6 まで進むのは正しいでしょうか？
=end



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