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Golang bytes.Equal() Function with Examples

Golang | bytes.Equal() Function: Here, we are going to learn about the Equal() function of the bytes package with its usages, syntax, and examples.
Submitted by IncludeHelp, on September 22, 2021

bytes.Equal()

The Equal() function is an inbuilt function of the bytes package which is used to check whether both byte slices a and b are the same length and contain the same bytes.

It accepts two parameters (a, b []byte) and returns true if a and b are the same length and contain the same bytes; false, otherwise.

Syntax

func Equal(a, b []byte) bool

Parameters

• a, b : The byte slices to be checked.

Return Value

The return type of the bytes.Equal() function is a bool, it returns true if a and b are the same length and contain the same bytes; false, otherwise.

Example 1

// Golang program to demonstrate the
// example of bytes.Equal() function

package main

import (
	"bytes"
	"fmt"
)

func main() {
	// Declaring byte slices
	var a = []byte{10, 20, 30, 70, 120, 255}
	var b = []byte{100, 120, 50, 70, 120, 255}
	var c = []byte{10, 20, 30, 70, 120, 255}

	// Comparing byte slices and printing results
	fmt.Println(bytes.Equal(a, b))
	fmt.Println(bytes.Equal(b, c))
	fmt.Println(bytes.Equal(a, c))
}

Output:

false
false
true

Example 2

// Golang program to demonstrate the
// example of bytes.Equal() function

package main

import (
	"bytes"
	"fmt"
)

func main() {
	// Declaring byte slices
	var a = []byte{10, 20, 30, 70, 120, 255}
	var b = []byte{100, 120, 50, 70, 120, 255}
	var c = []byte{10, 20, 30, 70, 120, 255}

	// Comparing byte slices and printing results
	result := bytes.Equal(a, b)
	if result == true {
		fmt.Printf("%t, both a and b are equal\n", result)
	} else {
		fmt.Printf("%t, both a and b are not equal\n", result)
	}

	result = bytes.Equal(b, c)
	if result == true {
		fmt.Printf("%t, both b and c are equal\n", result)
	} else {
		fmt.Printf("%t, both b and c are not equal\n", result)
	}

	result = bytes.Equal(a, c)
	if result == true {
		fmt.Printf("%t, both a and c are equal\n", result)
	} else {
		fmt.Printf("%t, both a and c are not equal\n", result)
	}
}

Output:

false, both a and b are not equal
false, both b and c are not equal
true, both a and c are equal

Example 3:

// Golang program to demonstrate the
// example of bytes.Equal() function

package main

import (
	"bytes"
	"fmt"
)

func main() {
	// Comparing strings
	var a string
	var b string

	a = "Hello, world!"
	b = "Hello, world!"

	if bytes.Equal([]byte(a), []byte(b)) == true {
		fmt.Printf("%q and %q are equal\n", a, b)
	} else {
		fmt.Printf("%q and %q are not equal\n", a, b)
	}

	a = "Hello, world!"
	b = "Hello, WORLD!"

	if bytes.Equal([]byte(a), []byte(b)) == true {
		fmt.Printf("%q and %q are equal\n", a, b)
	} else {
		fmt.Printf("%q and %q are not equal\n", a, b)
	}
}

Output:

"Hello, world!" and "Hello, world!" are equal
"Hello, world!" and "Hello, WORLD!" are not equal

Golang bytes Package »

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