callback
noun [ C ] uk/ˈkɔːl.bæk/ us/ˈkɑːl.bæk/
(IN COMPUTING)
computing specialized（计算机程序）回调
a piece of code (= a computer instruction) that tells another piece of code to perform an action at a particular later time
If the callback raises an exception, go to the last step.
a callback function/mechanism/method 回调功能/机制/方法
- More examples
- It is possible to directly access and receive a callback from an SMTP server to duplicate and capture e-mail messages.
- If a file is deleted outside of the FileSystem API, getFile() seems to error, which prevents the callback function from working.
- To avoid forcing application programmers to continually poll for data, some form of callback mechanism is required.