package main
import (
"regexp"
"fmt"
)
func main() {
var re = regexp.MustCompile(`(?m)^(?=.*(?:\r?\n(?!\r?\n).*)*?\bNew-York\b)(?=.*(?:\r?\n(?!\r?\n).*)*?\bBerlin\b).*(?:\r?\n(?!\r?\n).*)*`)
var str = `This is paragraph #1
New-York, London, Paris, Berlin
Some other text
End of paragraph
This is paragraph #2
London, Paris
End of paragraph
This is paragraph #3
New-York, Paris, Berlin
Some other text
End of paragraph
This is paragraph #4
End of paragraph
This is paragraph #5
Paris, Berlin
Some other text
End of paragraph`
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/