Golang React JS Technology Blog

Example: Fields and FieldsFunc from BYTES Package

Fields splits the slice s around each instance of one or more consecutive white space characters, returning a slice of subslices of s or an empty list if s contains only white space.
FieldsFunc interprets s as a sequence of UTF-8-encoded Unicode code points. It splits the slice s at each run of code points c satisfying f(c) and returns a slice of subslices of s.

Example

package main

import (
	"bytes"
	"fmt"
	"strings"	
)

func main() {
	fmt.Println("############ Fields #####################\n")
	listCountry := []byte(" Australia   Canada Japan Germany   India")
	fmt.Printf("%q",listCountry)
	
	country := bytes.Fields(listCountry)	
	for index,element := range country{
        fmt.Printf("\n%d => %q", index, element)
    }	
	
	fmt.Println("\n############ FieldsFunc #####################\n")
	sentence := []byte("The Go language has built-in facilities, as well as library support, for writing concurrent programs.")
	fmt.Printf("%q",sentence)
	vowelsSpace := "aeiouy "
	chop := bytes.FieldsFunc(sentence, func(r rune) bool {
		return strings.ContainsRune(vowelsSpace, r)
	})
	for index,element := range chop{
        fmt.Printf("\n%d => %q", index, element)
    }	
}

Output

############ Fields #####################

" Australia   Canada Japan Germany   India"
0 => "Australia"
1 => "Canada"
2 => "Japan"
3 => "Germany"
4 => "India"
############ FieldsFunc #####################

"The Go language has built-in facilities, as well as library support, for writing concurrent programs."
0 => "Th"
1 => "G"
2 => "l"
3 => "ng"
4 => "g"
5 => "h"
6 => "s"
7 => "b"
8 => "lt-"
9 => "n"
10 => "f"
11 => "c"
12 => "l"
13 => "t"
14 => "s,"
15 => "s"
16 => "w"
17 => "ll"
18 => "s"
19 => "l"
20 => "br"
21 => "r"
22 => "s"
23 => "pp"
24 => "rt,"
25 => "f"
26 => "r"
27 => "wr"
28 => "t"
29 => "ng"
30 => "c"
31 => "nc"
32 => "rr"
33 => "nt"
34 => "pr"
35 => "gr"
36 => "ms."
Most Helpful This Week
Split a character string based on change of character Example: How to use ReadAtLeast from IO Package in Golang? Find length of Channel, Pointer, Slice, String and Map Split a string at uppercase letters using regular expression in Golang Regular expression to validate common Credit Card Numbers Higher Order Functions in Golang How to get the current date and time with timestamp in local and other timezones ? How to get first and last element of slice in Golang? How to read input from console line? Example to handle GET and POST request in Golang