XFDL forms can provide sophisticated error checking as the user fills out the form, preventing possible errors (and wasted time as incomplete or erroneous forms are returned to the sender).
在用户填写 XFDL 表单时，表单能够提供复杂的错误检查，这样可以避免可能的错误（并避免由于将不完全或错误的表单返回给发送者而浪费时间）。
If a servlet takes longer than that time to send out a response, GAE generates an error in the form of an HTTP 500 code.
如果servlet采取更长的时间来发出响应，则gae会生成用HTTP 500代码形式表现的错误。
And, as soon as you see an error, throw it into a Google search and see what comes out - this can be a huge time-saver for obscure, non-obvious bugs.
一旦看到一个错误，就Google一下，看看Google能告诉你什么——对于那些含糊的、非显而易见的错误来说，这样做可以节省大把的时间。
应用推荐