package main
import (
    "fmt"
)
func main() {
    mymap := map[string]int{
        "Tivi":     230,
        "Laptop":   1200,
        "Mobile":   500,
        "Computer": 98,
    }
    value, ok := mymap["Tivi"]
    if ok {
        fmt.Println("value: ", value)
    } else {
        fmt.Println("Key not found")
    }
}         
        
Output
value:  230