我有一个字符串'Question',如何获取类Question的实例

Fre*_*ind 2 ruby

class_name = 'Question'
instance = which_method(class_name)
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我应该使用哪种方法?

Chu*_*bas 7

class_name = 'Question'
klass = Kernel.const_get class_name # klass holds the class Question, which is an object
instance = klass.new
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