单例模式
- 作者: 追逐00
- 来源: 51数据库
- 2022-08-12
class SingleSimple
def initialize
@log=File.open("sy.txt","a+")
end
@@instance=SingleSimple.new
def self.instance
return @@instance
end
def write(msg)
@log.puts msg
end
def read
msg=@log.read
return msg
end
end
singlesimple1=SingleSimple::instance
singlesimple2=SingleSimple::instance
puts singlesimple1
puts singlesimple2
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