package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)\bA(?![^\d\n]*[A-Z]{2})[^\d\n]*(\d+)`)
var str = `A bcd 1 should match
Abcd1 should match
A bcd should not match because there is no number
A bCD 1 should not match because there is capital C between the A and the number
A bcd 1 B should match because \`1\` is before the B
A test this is S 2 test B test 13 A again a test 4
A bcd 1 should match and capture 1
Abcd1 should match and capture 1
A bcd should not match because there is no number
A BCd 1 should not match because there is a capital C between the A and the number
A bcd 1 EF should match because 1 is before the EF`
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/