Breaking News: Grepper is joining You.com. Read the official announcement!

go - Structs

Add Answer

CL answered on June 12, 2020 Popularity 9/10 Helpfulness 1/10

answer go - Structs

related golang struct

related go struct methods

related go structs

related golang struct

related what is struct in golang

go - Structs

Comment

// A struct is a type. It's also a collection of fields

// Declaration
type Vertex struct {
    X, Y float64
}

// Creating
var v = Vertex{1, 2}
var v = Vertex{X: 1, Y: 2} // Creates a struct by defining values with keys
var v = []Vertex{{1,2},{5,2},{5,5}} // Initialize a slice of structs

// Accessing members
v.X = 4

// You can declare methods on structs. The struct you want to declare the
// method on (the receiving type) comes between the the func keyword and
// the method name. The struct is copied on each method call(!)
func (v Vertex) Abs() float64 {
    return math.Sqrt(v.X*v.X + v.Y*v.Y)
}

// Call method
v.Abs()

// For mutating methods, you need to use a pointer (see below) to the Struct
// as the type. With this, the struct value is not copied for the method call.
func (v *Vertex) add(n float64) {
    v.X += n
    v.Y += n
}

Popularity 9/10 Helpfulness 1/10 Language go

Source: github.com

Tags: go

Link to this answer
Share Copy Link

Contributed on Mar 10 2023

0 Answers Avg Quality 2/10

Closely Related Answers

golang struct

Comment

package main

import (
	"encoding/json"
	"fmt"
	"log"
)

// sigle struct
type Contact struct {
	id    int
	name  string
	phone int
}

// nested struct
type ShowRoom struct {
	address    string
	location   string
	postalcode int
}

// sub nested struct
type Car struct {
	id       int
	name     string
	price    float32
	showroom ShowRoom
}

// same struct type defination
type Person struct {
	Firstname, Lastname string
}

// json struct
type Book struct {
	Name   string  `json:"name"`
	Price  float32 `json:"price"`
	Author string  `json:"author"`
}

// struct as parameter
func GetContact(contact Contact) {
	fmt.Println("get struct with as parameter", contact)
}

// read struct with method
func (supercar Car) GetSuperCar() {
	fmt.Println("read struct with method", supercar)
}

func main() {

	var ContactPerson Contact
	var SuperCar Car
	var Biodata Person
	abstractStruct := struct {
		Name string
		Age  int
	}{
		Name: "john doe",
		Age:  23,
	}
	var MyBook Book

	ContactPerson.id = 1
	ContactPerson.name = "john doe"
	ContactPerson.phone = 87887242895
	NewContactPerson := Contact{2, "jane doe", 8777888555666}
	GetContactPointer := &ContactPerson

	SuperCar.id = 1
	SuperCar.name = "lambogini"
	SuperCar.price = 1.500000000
	SuperCar.showroom.address = "jl.nusantara kap 50 - 51"
	SuperCar.showroom.location = "depok"
	SuperCar.showroom.postalcode = 163353

	Biodata.Firstname = "aldi"
	Biodata.Lastname = "khan"

	MyBook.Name = "hary potter"
	MyBook.Price = 50.000
	MyBook.Author = "jk.rolling"

	json, err := json.Marshal(MyBook)

	fmt.Println("read struct step one", ContactPerson)
	fmt.Println("read struct step two", NewContactPerson)
	fmt.Printf("read struct by key %v\n", ContactPerson.name)
	GetContact(ContactPerson)
	fmt.Println("read struct with pointer", *GetContactPointer)
	fmt.Println("read struct by key with pointer", (*GetContactPointer).phone)
	fmt.Println("read nested struct", SuperCar)
	fmt.Println("read nested struct with key", SuperCar.showroom.location)
	SuperCar.GetSuperCar()
	fmt.Println("read struct with same type defination", Biodata)
	fmt.Println("read abstract struct", abstractStruct)

	if err != nil {
		log.Fatal(err)
	} else {
		fmt.Println("read struct with json style", string(json))
	}
}

Popularity 10/10 Helpfulness 4/10 Language go

Source: Grepper

Tags: go g

Link to this answer
Share Copy Link

Contributed on Mar 08 2021

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

go struct methods

Comment

type Person struct {
  name string
  surname string
}

func (p Person) GetName() string {
  return p.name
}

func (p Person) GetSurname() string {
  return p.surname
}

Popularity 10/10 Helpfulness 4/10 Language go

Source: Grepper

Tags: go g

Link to this answer
Share Copy Link

Contributed on Jun 12 2020

Splendid-est Swan

0 Answers Avg Quality 2/10

go structs

Comment

// A struct is a type. It's also a collection of fields

// Declaration
type Vertex struct {
    X, Y int
}

// Creating
var v = Vertex{1, 2}
var v = Vertex{X: 1, Y: 2} // Creates a struct by defining values with keys
var v = []Vertex{{1,2},{5,2},{5,5}} // Initialize a slice of structs

// Accessing members
v.X = 4

// You can declare methods on structs. The struct you want to declare the
// method on (the receiving type) comes between the the func keyword and
// the method name. The struct is copied on each method call(!)
func (v Vertex) Abs() float64 {
    return math.Sqrt(v.X*v.X + v.Y*v.Y)
}

// Call method
v.Abs()

// For mutating methods, you need to use a pointer (see below) to the Struct
// as the type. With this, the struct value is not copied for the method call.
func (v *Vertex) add(n float64) {
    v.X += n
    v.Y += n
}

Popularity 10/10 Helpfulness 3/10 Language go

Source: Grepper

Tags: go g

Link to this answer
Share Copy Link

Contributed on Jan 12 2021

Lorenzo Satta Chiris

0 Answers Avg Quality 2/10

golang struct

Comment

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type Address struct {
	Street  string `json:"street"`
	Suite   string `json:"suite"`
	Zipcode string `json:"zipcode"`
}

type Users struct {
	Name string `json:"name"`
	Age  uint   `json:"age"`
}

func ObjectStruct() {
	// users 1 example
	var users1 struct {
		Name string `json:"name"`
		Age  uint   `json:"age"`
	}

	users1.Name = "john doe"
	users1.Age = 23

	// users 2 example
	users2 := Users{
		Name: "john doe",
		Age:  23,
	}

	// users 3 example
	var users3 Users
	users3.Name = "john doe"
	users3.Age = 23

	// users 4 example
	var users4 Users = Users{
		Name: "john doe",
		Age:  23,
	}
  
  	// users 5 example
	var users5 = struct {
		Name string `json:"name"`
		Age  uint   `json:"age"`
    }{
      Name: "john doe",
      Age: 23,
    }
  
  	// users 6 example
	users6 := struct {
		Name string `json:"name"`
		Age  uint   `json:"age"`
	}{
		Name: "john doe",
		Age:  23,
	}

	fmt.Printf("Object struct 1 %#v \n", users1)
	fmt.Printf("Object struct 2 %#v \n", users2)
	fmt.Printf("Object struct 3 %#v \n", users3)
	fmt.Printf("Object struct 4 %#v \n", users4)
    fmt.Printf("Object struct 5 %#v \n", users5)
    fmt.Printf("Object struct 6 %#v \n", users6)
}

func ArrayObjectStruct() {
	// users 1 example
	users1 := []Users{
		Users{
			Name: "john doe",
			Age:  23,
		},
	}

	// users 2 example
	var users2 []Users
	users2 = []Users{
		Users{
			Name: "john doe",
			Age:  23,
		},
	}

	// users 3 example
	var users3 []Users = []Users{
		Users{
			Name: "john doe",
			Age:  23,
		},
	}

	// users 4 example
	users4 := make([]Users, 1)
	users4 = []Users{
		Users{
			Name: "john doe",
			Age:  23,
		},
	}
  
  	// users 5 example
	var users3 []Users = []Users{
		Users{
			Name: "john doe",
			Age:  23,
		},
	}

	fmt.Printf("Array object struct 1 %#v \n", users1)
	fmt.Printf("Array object struct 2 %#v \n", users2)
	fmt.Printf("Array object struct 3 %#v \n", users3)
	fmt.Printf("Array object struct 4 %#v \n", users4)
}

func main() {
	ObjectStruct()
	fmt.Printf("\n")
	ArrayObjectStruct()
}

Popularity 10/10 Helpfulness 2/10 Language go

Source: Grepper

Tags: go g

Link to this answer
Share Copy Link

Contributed on Apr 17 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

what is struct in golang

Comment

A structure or struct in Golang is a user-defined type that allows to group/combine items of possibly different types into a single type. Any real-world entity which has some set of properties/fields can be represented as a struct.

Popularity 10/10 Helpfulness 2/10 Language go

Source: Grepper

Tags: go g

Link to this answer
Share Copy Link

Contributed on Jun 14 2022

Harendra

0 Answers Avg Quality 2/10

go - Structs

Contents

More Related Answers

go - Structs

Closely Related Answers

golang struct

go struct methods

go structs

golang struct

what is struct in golang

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.