Often a process is programmed as a loop in which multiple actions are performed.
在编写进程时，通常把它编写成可以在其中执行多个操作的循环。
And with multiple files, you then have to loop.
对于多个文件，您必须执行循环。
Create a while loop to select multiple shippers.
创建while循环，以选择多个托运人。
How to read from multiple files in one loop?
如何读取多个文件在一个循环？
User interrupt in Ruby infinite loop (multiple classes)?
在红宝石无限循环中断用户(多类)？
User interrupt in Ruby infinite loop (multiple classes)?
在红宝石无限循环中断用户(多类)？
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