Ruby

class Player
    def initialize(name="levi")#构造函数
        @name=name
    end
    def show()
        puts "player:#{@name}"
    end
end

levi=Player.new()
levi.show()

curry=Player.new("curry")
curry.show()

harden=Player.new("harden")
harden.show()

class Game
    def initialize(title="怪物猎人",price=200)
        @title=title
        @price=price
    end
    def show()
        puts "标题:#{@title}"
        puts "价格:#{@price}"
    end
    def show2()
    end
    def show3()
    end 
end

puts Game.instance_methods(false)

mario=Game.new("超级马里奥",360);
if mario.respond_to?("show")
    mario.send("show")
end

class Game
    attr_accessor:price ,:title
    def initialize(title="怪物猎人设计",price=200)
        @title=title
        @price=price
    end
    def show()
        puts "标题: #{@title}"
        puts "价格: #{@price}"
    end 
end

mygame=Game.new()
mygame.show()

puts "title is "+mygame.respond_to?("title").to_s
puts  "price is"+mygame.respond_to?("price").to_s 

mygame.price=150
mygame.show()

games=["绝地逃生","怪物猎人世界","LOL"]
games.each do |game|
    puts "我爱<<#{game}>>"
end

games.each_with_index do |game,i|
    puts "#{i}.#{game}"
end

puts games.join(",")

if games.respond_to?("each")##respond_to用来判断是不是有each这个方法
end