我如何访问这个变量?

问题描述

class Player
  def getsaves
    print "Saves: "
    saves = gets
  end
  def initialize(saves, era, holds, strikeouts, whip)
  end
end

我有上面的代码...可以说我然后写.

I have the code above...lets say I then write.

j = Player.new(30, 30, 30, 30, 30)

我想访问 getsaves 中的 saves 变量当我在课堂范围之外时，我该怎么做?:

I want to access the saves variable in getsavesWhen I am outside the class scope, how do I do this?:

puts saves variable that is inside getsaves

推荐答案

正如您所写，saves 变量不仅不能从类作用域外访问，而且超出了作用域在 getsaves 方法的末尾.

As you've written it, not only is the saves variable inaccessible from outside the class scope, it goes out of scope at the end of the getsaves method.

你应该这样做:

class Player
  def getsaves
    print "Saves: "
    @saves = gets # use an instance variable to store the value
  end
  attr_reader :saves # allow external access to the @saves variable
  def initialize(saves, era, holds, strikeouts, whip)
  end
end

现在您可以简单地使用 j.saves 来访问 @saves 变量.

Now you can simply use j.saves to access the @saves variable.

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