Creating Maps with `make`

Part of the Fundamentals section of Coddy's GO journey — lesson 86 of 109.

The make function provides another way to create maps, especially when you don't need to initialize values immediately.

Create an empty map with make:

scores := make(map[string]int)
fmt.Println(scores)

Result:

map[]

Add elements to the map after creation:

scores["Alice"] = 95
scores["Bob"] = 80
fmt.Println(scores)

Result:

map[Alice:95 Bob:80]

Challenge

Beginner

In this challenge, you'll practice creating a map using the make function in Go. You'll create a map that stores the favorite colors of different people.

Your task is to create a map using make and then add some key-value pairs to it.

Cheat sheet

Create an empty map using make:

scores := make(map[string]int)
fmt.Println(scores) // map[]

Add elements to the map after creation:

scores["Alice"] = 95
scores["Bob"] = 80
fmt.Println(scores) // map[Alice:95 Bob:80]

Try it yourself

package main

import "fmt"

func main() {
	// TODO: Create a map called 'favoriteColors' using make
	// The keys should be strings (names) and the values should also be strings (colors)
	
	// Adding some key-value pairs to the map
	favoriteColors["Alice"] = "Blue"
	favoriteColors["Bob"] = "Green"
	favoriteColors["Charlie"] = "Red"
	
	// Print the map
	fmt.Println("Favorite colors:", favoriteColors)
	
	// Print Bob's favorite color
	fmt.Println("Bob's favorite color is", favoriteColors["Bob"])
}