A struct can bundle attributes together. If you create a struct, you can set a couple of variables for that struct. Those variables can be of any datatype.

A key difference from an array is that elements of an array are all of the same datatype. That is not the case with a struct.

If you want to combine variables, structs are the way to go. Unlike the concept of object oriented programming, they are just data holders.

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Struct in golang

Struct example

The golang example creates a new struct. Then it sets the variables.

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package main

import "fmt"

type Person struct {
name string
job string
}
func main() {
var aperson Person

aperson.name = "Albert"
aperson.job = "Professor"

fmt.Printf( "aperson.name = %s\n", aperson.name)
fmt.Printf( "aperson.job = %s\n", aperson.job)
}

The program bundles the variables (job, name) into a struct named Person.Then that structure can be used to set variables.

In this example the struct has only two variables, but a struct can have as many as you need.

You can create multiple items with the same struct, all with different values. Elements of a struct can be accessed immediately.

Video tutorial

Video tutorial below

Exercises

  1. Create a struct house with variables noRooms, price and city
  2. How does a struct differ from a class?