Merge

func Merge[K comparable, V any](mapInstances ...map[K]V) map[K]V

Merge takes a variadic numbers of maps with keys K and values V and returns a merged map. Merging is done from left to right. If a key already exists in a previous map, its value is over-written.

package main

import (
    "fmt"

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

func main() {
    vegetables := map[string]int{
        "potatoes": 5,
        "carrots":  10,
        "tomatoes": 3,
    }

    fruits := map[string]int{
        "bananas":  3,
        "tomatoes": 5,
    }

    result := maputils.Merge(vegetables, fruits)

    fmt.Print(result) //{ "potatoes": 5, "carrots":  10, "tomatoes": 5, "bananas": 3 }
}