简单的Ruby 类

简单的Ruby 类

建立下面的脚本文件，命名为C:\animals.rb，使用notepad++，选择格式为以UTF-8无BOM格式编码保存：

#模块声明, 类似于名称空间
module Animals

class Animal
    # 类的默认构造函数
    def initialize(name, species)
        @name=name
        @species=species
    end
    
    #getter for name attribute
    def name
        @name
    end

    #setter for name attribute
    def  name=(nameVal)
        @name=nameVal
    end
    
    #getter for species attribute
    def species
        @species
    end

    #setter for species attribute
    def  species=(speciesVal)
        @species=speciesVal
    end
end

# 类DogAnimal继承自Animal
class DogAnimal < Animal
    def initialize(voice)
        super("Dog", "mammal")
        @voice = voice
    end
    
    #getter for voice attribute
    def voice
        @voice
    end

    #setter for voice attribute
    def  voice=(voiceVal)
        @voice=voiceVal
    end
end

end #module Animals

cat = Animals::Animal.new("Cat", "mammal");
dog = Animals::DogAnimal.new("WangWang");

3.times{
    print cat.name + " is a " + cat.species + "\n"
    print dog.name + "'s voice is: " + dog.voice + "\n"
}

=begin
#ruby命令行运行脚本
ruby c:\animals.rb

结果显示:
Cat is a mammal
Dog's voice is WangWang
Cat is a mammal
Dog's voice is WangWang
Cat is a mammal
Dog's voice is WangWang
=end