Working with Maps

Snippet

Working with Maps

Maps are Go's built-in associative data type (hash tables). they store data in key-value pairs.

snippet.go
go
package main
 
import "fmt"
 
func main() {
    menu := map[string]float64{
        "Coffee": 2.50,
        "Tea":    2.00,
    }
 
    menu["Juice"] = 3.25
    delete(menu, "Tea")
 
    fmt.Println(menu)
}

Breakdown

map[string]float64

Defines a map where keys are strings and values are decimal numbers.

menu["Juice"] = 3.25

Adds a new key-value pair or updates an existing one.

delete(menu, "Tea")

A built-in function to remove a specific key from the map.

Previous snippet Next snippet

From your library

Working with Maps

Related