[英]undefined method `new' for Fixnum:Class (NoMethodError)
class Fixnum
def repeat
for i in 1..self.to_i
yield
end
end
end
z = Fixnum.new 4
The program above is giving undefined method new for Fixnum:Class (NoMethodError)
. 上面的程序
undefined method new for Fixnum:Class (NoMethodError)
提供了undefined method new for Fixnum:Class (NoMethodError)
。 Why so? 为什么这样? I just tried using it in another class and it works.
我只是尝试在另一个类中使用它,并且可以工作。
Thanks! 谢谢!
It looks to me that the method and the error have no relation, why are you doing z = Fixnum.new 4? 在我看来,该方法与错误无关,为什么要执行z = Fixnum.new 4?
The method should be used like: 该方法应按如下方式使用:
class Fixnum
def repeat
for i in 1..self.to_i
yield
end
end
end
5.repeat{puts "hi"}
#or maybe?
z = 3
z.repeat{puts "bye"}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.