Rails之间的差异引发StandardError.new'和'raise StandardError'

Question

为了处理Rails异常,我看到人们"提出SomeException.new"或"提出SomeException",有什么区别？

如果我有课,请说

 class UnableToCreateShipments < StandardError; end

我可以两个都做吗？

raise UnableToCreateShipments
raise UnableToCreateShipments.new

或者留言

raise UnableToCreateShipments, 'my error message'
raise UnableToCreateShipments.new('my error message')

Answer 1

你可以做到这两点,但是Boris Batsov的Ruby Style Guide和RuboCop建议只传递异常类的简单版本,而不是创建它的实例.