go - 多行返回多个值

Question

GoLang如何在多行中返回多个值？

  if  x == y {
    req, _ := cgi.Request()
    return req.FormValue("a"),
      req.FormValue("b"),
      req.FormValue("c"),
      req.FormValue("d"),
      req.FormValue("e"),

  } else {
      ...
  }

./example.go:9:3: syntax error: unexpected }, expecting expression

Answer 1

这不是复合字面量或函数调用，您不得在最后一行后添加尾随逗号:

return req.FormValue("a"),
  req.FormValue("b"),
  req.FormValue("c"),
  req.FormValue("d"),
  req.FormValue("e")

看一个例子:

func f() (int, int, string) {
    return 1,
        2,
        "3"
}

测试它:

fmt.Println(f())

输出(在 Go Playground 上尝试):

1 2 3

参见相关问题:How to break a long line of code in Golang?