package main

import "fmt"

type Vertex struct {
	Lat, Long float64
}

func main() {
	m := make(map[string]Vertex)
	m["Bell Labs"] = Vertex{40.68433, -74.39967}
	fmt.Println(m)
	m["Google"] = Vertex{37.42202, -122.08408}
	fmt.Println(m)
	val, ok := m["Bell Labs"]
	fmt.Println("The value for Bell Labs:", val, "Present?", ok)
	val1, ok1 := m["Microsoft"]
	fmt.Println("The value for Microsoft:", val1, "Present?", ok1)
	delete(m, "Google")
	fmt.Println(m)
	m["Bell Labs"] = Vertex{37.42202, -122.08408}
	fmt.Println(m)
}

package main

import (
	"encoding/json"
	"fmt"
)

func main() {
	var jsonBlob = []byte(`[
	{"Name": "Platypus", "Order": "Monotremata"},
	{"Name": "Quoll",    "Order": "Dasyuromorphia"}
]`)
	type Animal struct {
		Name  string
		Order string
	}
	var animals []Animal
	err := json.Unmarshal(jsonBlob, &animals)
	if err != nil {
		fmt.Println("error:", err)
	}
	fmt.Printf("%+v", animals)
}

package main

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

func main() {
	type ColorGroup struct {
		ID     int
		Name   string
		Colors []string
	}
	group := ColorGroup{
		ID:     1,
		Name:   "Reds",
		Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
	}
	b, err := json.Marshal(group)
	if err != nil {
		fmt.Println("error:", err)
	}
	os.Stdout.Write(b)
}