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  • the join and dump method

    join(string, ...) 
    Returns a new string formed by joining the strings using File::SEPARATOR.
    
    File.join("usr", "mail", "gumby")   #=> "usr/mail/gumby"
    real_path = File.join Settings.real_dir, "#{real_name}.#{aaa}.apk"
    dump( obj [, anIO] , limit=-1 ) → anIO 
    Serializes obj and all descendant objects. If anIO is specified, the serialized data will be written to it, otherwise the data will be returned as a String. If limit is specified, the traversal of subobjects will be limited to that depth. If limit is negative, no checking of depth will be performed.
    class Klass
      def initialize(str)
        @str = str
      end
      def say_hello
        @str
      end
    end
    o = Klass.new("hello
    ")
    data = Marshal.dump(o)
    obj = Marshal.load(data)
    obj.say_hello  #=> "hello
    "
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  • 原文地址:https://www.cnblogs.com/iwangzheng/p/3795216.html
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