How to extract value from matched string with regexp

[Nguyên Nguyễn Văn Cao]

For example I have:

reg := regexp.MustCompile("/user/[0-9]+/edit$")

and a string: "/user/999/edit".

How can I extract "999" part to a variable?

[Larry Clapp]

func main() {

s := "/user/999/edit"

// ... verify match with regex ...

// extract digits

n := strings.SplitN(s, "/", 4)[2]

fmt.Println(n)

// or

n = s[6 : 6+strings.Index(s[6:], "/")]

fmt.Println(n)

}

http://play.golang.org/p/lx4puQmgXW

-- L

[minux]

package main

import (

"fmt"

"regexp"

)

func main() {

s := "/user/999/edit"

re := regexp.MustCompile(`/user/([0-9]+)/edit$`)

fmt.Println(re.FindStringSubmatch(s))

}

http://play.golang.org/p/-qiV2xft4N