Go - Map check if value exists

In this example, we show how to check if the value exists in Map or not in GoLang with an example.

We check if a value exists by referring to its key.

Go - Map check if a value exists

In the example, we check if a country exists by its code in a Map:

package main

import "fmt"

func main() {

    countries := map[string]string{
        "IN": "India",
        "NP": "Nepal",
        "TR": "Turkey",
        "JP": "Japan",
        "ZW": "Zimbabwe",
    }

    country := countries["IN"]
    fmt.Println(country)

    country = countries["JP"]
    fmt.Println(country)

    country, found := countries["ZW"]
    fmt.Println(country, found)

    country, found = countries["TR"]
    fmt.Println(country, found)

    if country, found := countries["NP"]; found {
        fmt.Println(country)
    }
}

Output:

India
Japan
Zimbabwe true
Turkey true
Nepal