ruby 在线工具

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#!/usr/bin/ruby
# -*- coding: UTF-8 -*-
$global_variable = 10
class Class1
  def print_global
      puts "全局变量在 Class1 中输出为 #$global_variable"
  end
end
class Class2
  def print_global
      puts "全局变量在 Class2 中输出为 #$global_variable"
  end
end
class1obj = Class1.new
class1obj.print_global
class2obj = Class2.new
class2obj.print_global
 
 
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