Skip to content

Has

func Has[K comparable, V any](mapInstance map[K]V, key K) bool

Has checks if a key exists in the map. This is equivalent to the two-value form of map lookup but more expressive.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
package main

import (
    "fmt"

    "github.com/Goldziher/go-utils/maputils"
)

func main() {
    config := map[string]string{
        "host": "localhost",
        "port": "8080",
    }

    if maputils.Has(config, "host") {
        fmt.Println("Host is configured")
    }

    if !maputils.Has(config, "database") {
        fmt.Println("Database not configured")
    }
}