如何将数组传递给接受具有splat运算符的属性的方法？

If I have a method like:

如果我有一个像这样的方法：

def sum *numbers
  numbers.inject{|sum, number| sum += number}
end

How would I be able to pass an array as numbers?

我怎样才能将数组作为数字传递？

ruby-1.9.2-p180 :044 > sum 1,2,3   #=> 6
ruby-1.9.2-p180 :045 > sum([1,2,3])   #=> [1, 2, 3]

Note that I can't change the sum method to accept an array.

请注意，我无法更改sum方法以接受数组。

2 个解决方案

#1

Just put a splat when calling the method?

调用方法时只需要一个splat？

sum(*[1,2,3])

#2

Did you mean this?

你的意思是这个吗？

sum(*[1,2,3])

@Dogbert was first

@Dogbert是第一个