“已声明和未使用的变量”编译错误

本文介绍了“已声明和未使用的变量”编译错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在学习Google的新语言转到。我只是想尝试一些东西，我注意到，如果你声明了一个变量并且不对它做任何事情，那么go编译器（在我的例子中是 8g ）失败 - 用这个错误编译： hello.go：9：声明了错误并且未使用。我对此感到惊讶，因为大多数语言编译器只是警告你关于未使用的变量，但仍然可以编译。

I am learning Google's new language Go. I am just trying stuff out and I noticed that if you declare a variable and do not do anything with it the go compiler (8g in my case) fails to compile with this error: hello.go:9: error declared and not used. I was suprised at this since most language compilers just warn you about unused variables but still compile.

有没有办法解决这个问题？我检查了编译器的文档，我没有看到任何会改变这种行为的东西。有没有办法删除 error ，这样就可以编译？

Is there anyway I can get around this? I checked the documentation for the compiler and I don't see anything that would change this behaviour. Is there a way to just delete error so that this will compile?

package main import "fmt" import "os" func main() { fmt.Printf("Hello World\n"); cwd, error := os.Getwd(); fmt.Printf(cwd); }

推荐答案

您可以试试这个：

cwd, _ := os.Getwd();

但是好像保留Jurily答案中的错误会更好，所以你知道出错了。

but it seems like it would be better to keep the error like in Jurily's answer so you know if something went wrong.