package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^([abc](?=[defghijkl]|$)|[def](?=[abcghijkl]|$)|[ghi](?=[abcdefjkl]|$)|[jkl](?=[abcdefghi]|$))+$`)
var str = `Sides: abc def ghi jkl
These match:
ad
ga
adgjbehk
jgjgjad
These have two letters from the same side next to each other:
add
ab
Invalid letters:
adza
`
for i, match := range re.FindAllString(str, -1) {
fmt.Println(match, "found at index", i)
}
}
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/