func processLines(done chan<- struct{}, getRx *regexp.Regexp,
pageList safeslice.SafeSlice, lines <-chan string) {
for line := range lines {
if matches := getRx.FindStringSubmatch(line); matches != nil {
pageList.Append(matches[1])
}
}
done <- struct{}{}
}
func showResults(pageList safeslice.SafeSlice) {
list := pageList.Close()
counts := make(map[string]int)
for _, page := range list { // uniquify
counts[page.(string)] += 1
}
for page, count := range counts {
fmt.Printf("%8d %s\n", count, page)
}
}