Go 语言 bytes.FieldsFunc 函数的使用

1package main
2
3import (
4	"bytes"
5	"fmt"
6	"reflect"
7	"strings"
8)
9
10func main() {
11
12	sentence := []byte("The Go language has built-in facilities, as well as library support, for writing concurrent programs.")
13	fmt.Printf("%q\n", sentence)
14
15	vowelsSpace := " "
16	chop := bytes.FieldsFunc(sentence, func(r rune) bool {
17		return strings.ContainsRune(vowelsSpace, r)
18	})
19
20	for index, element := range chop {
21		fmt.Printf("\n%d => %q", index, element)
22	}
23	fmt.Println("\n", "chop type : ", reflect.ValueOf(chop).Kind())
24
25	vowelsSpace = ","
26	chop = bytes.FieldsFunc(sentence, func(r rune) bool {
27		return strings.ContainsRune(vowelsSpace, r)
28	})
29
30	for index, element := range chop {
31		fmt.Printf("\n%d => %q", index, element)
32	}
33	fmt.Println("\n", "chop type : ", reflect.ValueOf(chop).Kind())
34}

编译输出:

1C:/Go/bin/go.exe build -i [D:/golang/src/JsonTest]
2成功: 进程退出代码 0.
3D:/golang/src/JsonTest/JsonTest.exe  [D:/golang/src/JsonTest]
4"The Go language has built-in facilities, as well as library support, for writing concurrent programs."
5
60 => "The"
71 => "Go"
82 => "language"
93 => "has"
104 => "built-in"
115 => "facilities,"
126 => "as"
137 => "well"
148 => "as"
159 => "library"
1610 => "support,"
1711 => "for"
1812 => "writing"
1913 => "concurrent"
2014 => "programs."
21 chop type :  slice
22
230 => "The Go language has built-in facilities"
241 => " as well as library support"
252 => " for writing concurrent programs."
26 chop type :  slice
27成功: 进程退出代码 0.