Go语言一千问解答

问题

1. https://programnotes.cn/golang-1000-question/
2. code,repo in github <git@github.com:yiGmMk/golang-1000-question.git>
3. 代码允许环境:
   • go version go1.15.3 linux/amd64

const

1. [001]iota,有常量如下,second数值是?

   const (
       first = 1
       second =iota
       third
       fourth
   )

   • 答: 1
   • 参考:
     • go官方文档: https://golang.google.cn/pkg/builtin/#iota
     • go by example: https://golangbyexample.com/iota-in-golang/

string

1. [002]strings.ReplaceAll,代码如下,replace的值是?

   origin := "   特斯拉Model X    "
   replace := strings.ReplaceAll(origin, " ", "")
   
   fmt.Printf("origin:%s\nreplace:%s\n", origin, replace)

   答: “ 特斯拉Model X “,即origin