Most controls have an error event from which you can write an error handler (see errorTrapping).
大多数的控制项都有供您撰写错误处理常式的错误事件(请参阅撷取错误)。
2
This section explores types, conditions, iterations, errortrapping, and classes, followed by a couple of slightly larger Blue applications to pull the elements together.
本节研究了类型、条件、迭代、错误捕获和类,然后有两个略大型的Blue应用程序将这些元素结合起来。
3
Knowing how to redirect data as stdin or stdout, how to use the pipe, and how to use operators in UNIX helps you write more powerful scripts with better errortrapping and cleaner logic.