ruby - 拯救 NameError 而不是 NoMethodError

Question

我需要在特殊情况下捕获 NameError。但我不想捕获 NameError 的所有子类。有办法实现吗？

# This shall be catched
begin
  String::NotExistend.new
rescue NameError
  puts 'Will do something with this error'
end

# This shall not be catched
begin
  # Will raise a NoMethodError but I don't want this Error to be catched
  String.myattribute = 'value'
rescue NameError
  puts 'Should never be called'
end

Answer 1

你也可以用更传统的方式来做

begin
  # your code goes here
rescue NoMethodError
  raise
rescue NameError
  puts 'Will do something with this error'
end