This is a basic example of the regexp package in go's stdlib.

test_regexp.go

package main

import (
    "fmt"
    "regexp"
)

func main() {
    str := "Ruby 2.0 is the 2nd major release of Ruby"
    re, err := regexp.Compile("[.\\d]+")
    if err != nil {
        panic(err)
    }

    fmt.Println(re.FindAll([]byte(str), -1))
    fmt.Println(re.FindAllIndex([]byte(str), -1))

    fmt.Println(re.FindAllString(str, -1))
    fmt.Println(re.FindAllStringIndex(str, -1))
};