How to split a slice of bytes in Golang?

In Go language slice is more powerful, flexible, convenient than an array, and is a lightweight data structure. The slice is a variable-length sequence which stores elements of a similar type, you are not allowed to store different type of elements in the same slice.
In the Go slice of bytes, you are allowed to split the given slice using a Split() function. This function splits a slice of bytes into all subslices separated by the given separator and returns a slice which contains all these subslices. It is defined under the bytes package so, you have to import bytes package in your program for accessing Split function.

Syntax:

func Split(o_slice, sep []byte) [][]byte

Here, o_slice is the slice of bytes and sep is the separator. If the sep is empty, then it will split after each UTF-8 sequence. Let us discuss this concept with the help of the given examples:



Example 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Go program to illustrate the concept
// of splitting a slice of bytes
package main
  
import (
    "bytes"
    "fmt"
)
  
func main() {
  
    // Creating and initializing
    // the slice of bytes
    // Using shorthand declaration
    slice_1 := []byte{'!', '!', 'G', 'e', 'e', 'k', 's'
       'f', 'o', 'r', 'G', 'e', 'e', 'k', 's', '#', '#'}
      
    slice_2 := []byte{'A', 'p', 'p', 'l', 'e'}
      
    slice_3 := []byte{'%', 'g', '%', 'e', '%', 'e'
                           '%', 'k', '%', 's', '%'}
  
    // Displaying slices
    fmt.Println("Original Slice:")
    fmt.Printf("Slice 1: %s", slice_1)
    fmt.Printf("\nSlice 2: %s", slice_2)
    fmt.Printf("\nSlice 3: %s", slice_3)
  
    // Splitting the slice of bytes
    // Using Split function
    res1 := bytes.Split(slice_1, []byte("eek"))
    res2 := bytes.Split(slice_2, []byte(""))
    res3 := bytes.Split(slice_3, []byte("%"))
  
    // Display the results
    fmt.Printf("\n\nAfter splitting:")
    fmt.Printf("\nSlice 1: %s", res1)
    fmt.Printf("\nSlice 2: %s", res2)
    fmt.Printf("\nSlice 3: %s", res3)
  
}

chevron_right


Output:

Original Slice:
Slice 1: !!GeeksforGeeks##
Slice 2: Apple
Slice 3: %g%e%e%k%s%

After splitting:
Slice 1: [!!G sforG s##]
Slice 2: [A p p l e]
Slice 3: [ g e e k s ]

Example 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// Go program to illustrate the concept
// of splitting a slice of bytes
package main
  
import (
    "bytes"
    "fmt"
)
  
func main() {
  
    // Creating and Splitting
    // the slice of bytes
    // Using Split function
    res1 := bytes.Split([]byte("****Welcome, to, GeeksforGeeks****"), 
                                                         []byte(","))
      
    res2 := bytes.Split([]byte("Learning x how x to x trim x a x slice of bytes"),
                                                                     []byte("x"))
      
    res3 := bytes.Split([]byte("GeeksforGeeks, Geek"), []byte(""))
      
    res4 := bytes.Split([]byte(""), []byte(","))
  
    // Display the results
    fmt.Printf("Final Value:\n")
    fmt.Printf("\nSlice 1: %s", res1)
    fmt.Printf("\nSlice 2: %s", res2)
    fmt.Printf("\nSlice 3: %s", res3)
    fmt.Printf("\nSlice 4: %s", res4)
}

chevron_right


Output:

Final Value:

Slice 1: [****Welcome  to  GeeksforGeeks****]
Slice 2: [Learning   how   to   trim   a   slice of bytes]
Slice 3: [G e e k s f o r G e e k s ,   G e e k]
Slice 4: []


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.