关于异常：如何在ruby中显示错误类型？


How to display error type in ruby?

在以下代码中

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begin
 raise StandardError, 'message'
 #some code that raises a lot of exception
rescue StandardError
 #handle error
rescue OtherError
 #handle error
rescue YetAnotherError
 #handle error
end

我希望打印一个警告，说明错误的类型和消息，而不向每个援救子句添加print语句，例如

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begin
 raise StandardError, 'message'
 #some code that raises a lot of exception
rescue StandardError
 #handle error
rescue OtherError
 #handle error
rescue YetAnotherError
 #handle error
???
 print"An error of type #{???} happened, message is #{???}"
end
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begin
  raise ArgumentError,"I'm a description"
rescue Exception => ex
  puts"An error of type #{ex.class} happened, message is #{ex.message}"
end

prints:发生了类型argumenterror的错误，消息是I'm a description

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