type WordCounter int
func (c *WordCounter) Write(p []byte) (int, error) {
scanner := bufio.NewScanner(bytes.NewReader(p))
// set the split function for the scanning operation
scanner.Split(bufio.ScanWords)
// Count the words
count := 0
for scanner.Scan() {
count++
}
if err := scanner.Err(); err != nil {
return -1, err
}
*c += WordCounter(count)
return len(p), nil
}
func main() {
input := "Spicy jalapeno pastrami ut ham turducken.\n Lorem sed ullamco, leberkas sint short loin strip steak ut shoulder shankle porchetta venison prosciutto turducken swine.\n Deserunt kevin frankfurter tongue aliqua incididunt tri-tip shank nostrud.\n"
var c WordCounter
_, err := fmt.Fprintf(&c, "%s", input)
if nil != err {
log.Fatal(err)
}
fmt.Println(c) // 32
}原文：https://blog.51cto.com/11317783/2428234