如何禁用 Golang 未使用的导入错误 [英] How to disable Golang unused import error

问题描述

默认情况下，Go 将未使用的导入视为错误，强制您删除导入.我想知道是否存在改变这种行为的希望，例如将其降低为警告.

我觉得这个问题非常烦人，使我无法享受在 Go 中编码的乐趣.

例如，我正在测试一些代码，禁用一个段/函数.不再使用 lib 中的某些函数(例如 fmt、错误等)，但我需要在进行一些测试后重新启用该函数.现在除非我删除这些导入，否则程序将无法编译，几分钟后我需要重新导入 lib.

在开发 GAE 程序时，我一次又一次地执行此过程.

解决方案

在包名前添加下划线 (_) 将忽略未使用的导入错误.

这是一个如何使用它的示例:

import (日志"数据库/sql"_ "github.com/go-sql-driver/mysql")

<块引用>

要仅为其副作用(初始化)导入包，请使用空白标识符作为显式包名称.

在 https://golang.org/ref/spec#Import_declarations 处查看更多信息

By default, Go treats unused import as error, forcing you to delete the import. I want to know if there exists some hope to change to this behavior, e.g. reducing it to warning.

I find this problem extremely annoying, preventing me from enjoying coding in Go.

For example, I was testing some code, disabling a segment/function. Some functions from a lib is no longer used (e.g. fmt, errors, whatever), but I will need to re-enable the function after a little testing. Now the program won't compile unless I remove those imports, and a few minutes later I need to re-import the lib.

I was doing this process again and again when developing a GAE program.

解决方案

Adding an underscore (_) before a package name will ignore the unused import error.

Here is an example of how you could use it:

import (
    "log"
    "database/sql"

    _ "github.com/go-sql-driver/mysql"
)

To import a package solely for its side-effects (initialization), use the blank identifier as explicit package name.

View more at https://golang.org/ref/spec#Import_declarations

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