package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(x(\d)(,)?)(x(\d)(,)?)?`)
var str = `X1,O1,X2,O2,Z3,X4,O4,Z5,X6,O6 <- repeated groups broken apart
x1,x2,Z3,x4,Z5,x6
X1,X2,O1,O2,Z3,X4,O4,Z5,X6,O6 <- repeated groups kept together`
var substitution = "X$2,X$5$3O$2,O$5$3"
fmt.Println(re.ReplaceAllString(str, substitution))
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Golang, please visit: https://golang.org/pkg/regexp/