Overview

GO struct is named collection of data fields which can be of different types. Struct acts as a container that has different heterogeneous data types which together represents an entity. For example, different attributes are used to represent an employee in an organization. Employee can have

• Name of string type

• Age of int type

• DOB of time.Time type

• Salary of int type

.. and so on. A struct can be used to represent an employee

type employee struct {
    name   string
    age    int
    salary int
}

Accessing and Setting Struct Fields

A struct variable can be created as below

emp := employee{name: "Sam", age: 31, salary: 2000}

Once the struct variable is created, structs fields can be accessed using the dot operator. Below is the format for getting the value

n := emp.name

Similarly a value can be assigned to a struct field too.

emp.name = "some_new_name"

Let’s see an example

package main

import "fmt"

type employee struct {
    name   string
    age    int
    salary int
}

func main() {
    emp := employee{name: "Sam", age: 31, salary: 2000}

    //Accessing a struct field
    n := emp.name
    fmt.Printf("Current name is: %s\n", n)

    //Assigning a new value
    emp.name = "John"
    fmt.Printf("New name is: %s\n", emp.name)
}

Output

Current name is: Sam
New name is: John