如何将参数传递给define_method? [英] How do you pass arguments to define_method?

问题描述

我想将参数传递给使用define_method定义的方法，我该怎么做?

I would like to pass an argument(s) to a method being defined using define_method, how would I do that?

推荐答案

您传递给define_method的块可以包含一些参数.这就是您定义的方法接受参数的方式.当您定义一个方法时，您实际上只是在给该块起个昵称并在类中保留对其的引用.参数随块一起提供.所以:

The block that you pass to define_method can include some parameters. That's how your defined method accepts arguments. When you define a method you're really just nicknaming the block and keeping a reference to it in the class. The parameters come with the block. So:

define_method(:say_hi) { |other| puts "Hi, " + other }

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