ruby - 动态需要文件？

Question

有没有人足够了解 Ruby 的 require 来告诉我以下语法是否有效:

class Something

  def initialize(mode)
     case mode
     when :one then require 'some_gem'
     when :two then require 'other_gem'
     end
  end

end

s = Something.new

如果是这样，需要将 gem 放入全局命名空间，就像在文件顶部时一样？

Answer 1

If so, would the require place the gem into the global namespace as the same require at the top of the file would?

是的。 require 没有范围，而 load 有。