Structs: Creating Custom Data Types

Snippet

Structs: Creating Custom Data Types

Structs are composite data types that group together variables of different types under one name. They are the foundation for creating custom objects in Go. You can access fields directly with the dot notation, and passing pointers to structs allows functions to modify the original data.

snippet.go
go
package main
import "fmt"
 
type Person struct {
	Name string
	Age  int
}
 
func main() {
	person := Person{Name: "Max", Age: 25}
	fmt.Println(person.Name, "is", person.Age)
 
	pointer := &person
	fmt.Println("Via pointer:", pointer.Name)
}

Breakdown

type Person struct {

Declares a new custom type called Person

Name string

Field named Name of type string

Age int

Field named Age of type int

person := Person{Name: "Max", Age: 25}

Creates instance with named fields for clarity

pointer := &person

Creates pointer to the person struct

pointer.Name

Go automatically dereferences pointer for field access

Previous snippet Next snippet

From your library

Structs: Creating Custom Data Types

Related