Go开发报错 -- Golang strings.Builder type undefined

折月煮酒 提交于 2019-12-05 00:41:31

 

Go开发报错 -- Golang strings.Builder type undefined

 

在Go开发中,Go语言版本 go 1.10 以下版本,使用strings.Builder报错

I was having a problem with the strings.Builder type in GO.

Attempted to run the example code verbatim and GO still responds with:

undefined: strings.Builder

Any clues as to what the problem can be, there's been not other problems at all.

package main

import (
    "fmt"
    "strings"
)

func main() {

    var b strings.Builder
    for i := 3; i >=1; i-- {
        fmt.Fprintf(&b, "%x...", i)
    }
    b.WriteString("ignition")
    fmt.Println(b.String())
}

报错:

undefined: strings.Builder

原因:

 # strings.Builder 是 go 1.10 版本才新加入的 , 所以解决方法有两个:

(一)使用 go 1.10 + 以后版本。

(二)继续使用 go 1.10 以前版本;但是将strings.Builder替换为bytes.Buffer。

 

回答:

  • strings.Builder was added in Go 1.10 (released 2018-02-16, 9 days ago at the time of writing). If you are building using an older version of Go, it won't be available.
  • If must working with older Go version, you can use bytes.Buffer instead

 

转载来源:https://stackoverflow.com/questions/48978414/golang-strings-builder-type-undefined

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