go - Maps

CL answered on January 15, 2021 Popularity 8/10 Helpfulness 5/10

answer go - Maps

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go - Maps

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m := make(map[string]int)
m["key"] = 42
fmt.Println(m["key"])

delete(m, "key")

elem, ok := m["key"] // test if key "key" is present and retrieve it, if so

// map literal
var m = map[string]Vertex{
    "Bell Labs": {40.68433, -74.39967},
    "Google":    {37.42202, -122.08408},
}

// iterate over map content
for key, value := range m {
}

Popularity 8/10 Helpfulness 5/10 Language go

Source: github.com

Tags: go maps

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Contributed on Mar 10 2023

0 Answers Avg Quality 2/10

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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 Mapping() {
   // users 1 example
	var users1 map[string]interface{}

	users1 = map[string]interface{}{"name": "john doe", "age": 23}

   // users 2 example
	users2 := map[string]interface{}{"name": "john doe", "age": 23}

   // users 3 example
	users3 := make(map[string]interface{})
	users3 = map[string]interface{}{"name": "John doe", "age": 23}

   // users 4 example
	var users4 map[string]interface{} = map[string]interface{}{"name": "John doe", "age": 23}

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

func ArrayMapping() {
   // users 1 example
	var users1 []map[string]interface{}

	users1 = []map[string]interface{}{
		map[string]interface{}{"name": "john doe", "age": 23},
	}

   // users 2 example
	users2 := []map[string]interface{}{
		map[string]interface{}{"name": "john doe", "age": 23},
	}

   // users 2 example
	users3 := make([]map[string]interface{}, 1)
	users3 = []map[string]interface{}{
		map[string]interface{}{"name": "John doe", "age": 23},
	}

   // users 4 example
	var users4 []map[string]interface{} = []map[string]interface{}{map[string]interface{}{"name": "John doe", "age": 23}}

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

func main() {
	Mapping()
	fmt.Printf("\n")
	ArrayMapping()
}

Popularity 9/10 Helpfulness 4/10 Language go

Source: Grepper

Tags: go g

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Contributed on Apr 17 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

Go map

Comment

subjectMarks := map[string]float32{"Golang": 85, "Java": 80, "Python": 81}

Popularity 10/10 Helpfulness 3/10 Language go

Source: Grepper

Tags: go g

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Contributed on Jun 16 2022

SAMER SAEID

0 Answers Avg Quality 2/10

go maps

Comment

type Vertex struct {
	Lat, Long float64
}

var m map[string]Vertex

func main() {
	m = make(map[string]Vertex)
	m["Bell Labs"] = Vertex{
		40.68433, -74.39967,
	}
	fmt.Println(m["Bell Labs"])
}

Popularity 10/10 Helpfulness 1/10 Language go

Source: Grepper

Tags: go g

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Contributed on Jan 15 2021

Lorenzo Satta Chiris

0 Answers Avg Quality 2/10

go - Maps

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