These functions become more powerful when used with the end function.

如果结合使用end函数，那么这些函数将变得更加强大。

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The service provider parses the request message and determines that it has to invoke a back-end function that requires a 5 second timeout.

服务提供程序解析请求消息，确定必须调用需要5秒超时的后端函数。

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The end function moves the internal pointer to, and outputs, the last element in the array.

函数的作用是：将数组的内部指针指向最后一个元素并输出它。

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The end function moves the internal pointer to, and outputs, the last element in the array.

函数的作用是：将数组的内部指针指向最后一个元素并输出它。

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