如何使用bufio.ScanWords

Question

我如何使用bufio.ScanWords和bufio.ScanLines函数来计算单词和行？

我试过了:

fmt.Println(bufio.ScanWords([]byte("Good day everyone"), false))

打印:

5 [103 111 111 100] <nil>

不确定那是什么意思？

Answer 1

计算单词:

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"
scanner := bufio.NewScanner(strings.NewReader(input))
// 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 {
    fmt.Fprintln(os.Stderr, "reading input:", err)
}
fmt.Printf("%d\n", count)

计算线数:

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"

scanner := bufio.NewScanner(strings.NewReader(input))
// Set the split function for the scanning operation.
scanner.Split(bufio.ScanLines)
// Count the words.
count := 0
for scanner.Scan() {
    count++
}
if err := scanner.Err(); err != nil {
    fmt.Fprintln(os.Stderr, "reading input:", err)
}
fmt.Printf("%d\n", count)