strconv.AppendUint() Function in Golang With Examples

Go language provides inbuilt support to implement conversions to and from string representations of basic data types by strconv Package. This package provides an AppendUint() function which is used to append the string form of the unsigned integer x, as generated by FormatUint, to num and return the extended buffer. Or in other words, this function converts the uint type integer x to a string and appends it to the end of num. To access AppendUint() function you need to import strconv Package in your program.

Syntax:

func AppendUint(num []byte, x uint64, base int) []byte

Example 1:

// Golang program to illustrate
// strconv.AppendUint() function
package main

import (
    "fmt"
    "strconv"
)

func main() {

    // Converting the unit
    // type integer x to a string
    // appends it to the end of
    // the given []byte
    // Using AppendUint() function
    val1 := []byte("uint value (base 16): ")
    val1 = strconv.AppendUint(val1, 35, 16)
    fmt.Println(string(val1))

    val2 := []byte("uint value (base 10): ")
    val2 = strconv.AppendUint(val2, 35, 10)
    fmt.Println(string(val2))

}

Output:

uint value (base 16): 23
uint value (base 10): 35

Example 2:

// Golang program to illustrate
// strconv.AppendUint() function
package main

import (
    "fmt"
    "strconv"
)

func main() {

    // Converting the unit
    // type integer x to a string
    // appends it to the
    // end of the given []byte
    // Using AppendUint() function
    val1 := []byte("uint value (base 16): ")
    val1 = strconv.AppendUint(val1, 45, 16)
    fmt.Println(string(val1))
    fmt.Println("Length: ", len(val1))
    fmt.Println("Capacity: ", cap(val1))

    val2 := []byte("uint value (base 10): ")
    val2 = strconv.AppendUint(val2, 43, 10)
    fmt.Println(string(val2))
    fmt.Println("Length: ", len(val2))
    fmt.Println("Capacity: ", cap(val2))

}

Output:

uint value (base 16): 2d
Length:  24
Capacity:  48
uint value (base 10):43
Length:  23
Capacity:  48