在[for]循环中处理返回值

huangapple
go评论114阅读模式
英文:

Working with returned value in [for] loop

问题

我有使用C#的经验，可以处理用户的命令，代码如下：

  1. string command;
  2. while ((command = GetCommandFromUser()) != EXIT_COMMAND)
  3.     ProcessCommand(command);

这段简单的代码允许我从用户那里获取命令（从控制台或类似的地方），并对其进行处理。

但是在Go语言中，我只有以下代码：

  1. var command string
  2. for command = GetCommandFromUser(); command != ExitCommand; command = GetCommandFromUser() {
  3.     ProcessCommand(command)
  4. }

我能简化它吗？

英文:

I have an experience with C#, where I can work with commands from user like this:

  1. string command;
  2. while ( (command = GetCommandFromUser()) != EXIT_COMMAND )
  3.     ProcessCommand(command);

This simple code allows me get command from user (from Console or something like this) and process it.

But in Go I have only this code:

  1. var command string
  2. for command = GetCommandFromUser(); command != ExitCommand; command = GetCommandFromUser() {
  3. 	ProcessCommand(command)
  4. }

Can I do it simply?

答案1

得分: 2

  1. for {
  2.     command := GetCommandFromUser()
  3.     if command == ExitCommand {
  4.         break
  5.     }
  7.     ProcessCommand(command)
  8. }
  1. for {
  2.     command := GetCommandFromUser()
  3.     if command == ExitCommand {
  4.         break
  5.     }
  7.     ProcessCommand(command)
  8. }
  1. for {
  2.     command := GetCommandFromUser()
  3.     if command == ExitCommand {
  4.         break
  5.     }
  7.     ProcessCommand(command)
  8. }
英文: 
  1. for {
  2.     command := GetCommandFromUser()
  3.     if command == ExitCommand {
  4.         break
  5.     }
  7.     ProcessCommand(command)
  8. }

huangapple
  • 本文由 发表于 2017年7月13日 16:11:30
  • 转载请务必保留本文链接：https://go.coder-hub.com/45074998.html
  • go
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