go - 未命名指针返回值的预期标识符

Question

gofmt 此时给出关于此函数签名的“预期标识符”警告:

func foo() (*int, y int) {}
            ^

但是，它不会提示这个签名:

func foo() (int, y int) {}

如何命名一个返回值而不让 gofmt 提示未命名的指针返回值？

Answer 1

How can I name one return value without having gofmt complain about the unnamed pointer return value?

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The Go Programming Language Specification

Blank identifier

The blank identifier is represented by the underscore character _. It serves as an anonymous placeholder instead of a regular (non-blank) identifier and has special meaning in declarations, as an operand, and in assignments.

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使用空白标识符 (_)。例如，

package main

func foo() (_ *int, y int) { return nil, 0 }

func main() {}

Playground :https://play.golang.org/p/RBfxkDaZdOB