// reads in words from a local text file
func scanLines(path string, results chan<- string) {
        file, err := os.Open(path)
        if err != nil {
                os.Exit(1)
        }
        defer file.Close()

        scanner := bufio.NewScanner(file)
        scanner.Split(bufio.ScanWords)

        for scanner.Scan() {
                results <- scanner.Text()
        }
}


// benchmark
func BenchmarkScanLines(b *testing.B) {
        ch := make(chan string)
        go func() {
                for i := 0; i < b.N; i++ {
                        scanLines("wordlist.txt", ch)
                }
                close(ch)
        }()
        for _ = range ch {
        }
}