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Table of contents
1.
Introduction
2.
Pointers
3.
Finding Length of the Pointer
3.1.
Syntax
4.
Example
5.
Frequently Asked Questions
5.1.
What is Go?
5.2.
What is a pointer in Golang?
5.3.
Which function to use to find the length of a pointer in Go?
6.
Conclusion
Last Updated: Mar 27, 2024

Finding the Length of the Pointer in Go

Author Rhythm Jain
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Introduction

Go, often known as Golang, is an open-source, compiled, and statically typed computer language created by Google. It is intended to be simple, quick, readable, and efficient.

Today, we will discuss finding the length of the pointer in Go. But before, let's learn about what a pointer in Go is.

Pointers

Pointers are the Go programming language variables used to hold another variable's memory address. Pointers are also known as special variables in Golang. The variables store data in the system at a specific memory address. Memory addresses are always in hexadecimal format eg.0xA012

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Finding Length of the Pointer

The length of a pointer may be determined using the len() method in pointers. This built-in function returns the total number of items in the supplied pointer to an array, even if the specified pointer is null. This function is classified as builtin.

Syntax

func len(p Type) int
Here, p is the pointer.

Example

Let's go through an example to have a better understanding.

// How to find the length of the pointer to an array using the Go language
package main
  
import (
    "fmt"
)


func main() {
  
    var pointer1 [5]*int
    var pointer2 [4]*string
    var pointer3 [3]*float64
  
    // Finding the length of Pointer Array
    fmt.Println("Length of Pointer 1: ", len(pointer1))
    fmt.Println("Length of Pointer 2: ", len(pointer2))
    fmt.Println("Length of Pointer 3: ", len(pointer3))
}

 

Output:

​​Length of Pointer 1:  5
Length of Pointer 2:  4
Length of Pointer 3:  3

Frequently Asked Questions

What is Go?

Go, often known as Golang, is a Google-developed open-source, compiled, and statically typed computer language. It's designed to be simple, fast, readable, and efficient.

What is a pointer in Golang?

In the Go programming language or Golang, pointers are variables that retain the memory address of another variable. In Golang, pointers are also known as special variables.

Which function to use to find the length of a pointer in Go?

In the go programming language, we can use the len() function to find the length of the pointer.

Conclusion

In this blog, we extensively discussed finding the length of a pointer in go. We also briefly described what a pointer is, along with an example. We hope our blog enhances your knowledge of the pointers and how to find their length.

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