Filter

func Filter[K comparable, V any](mapInstance map[K]V, function func(key K, value V) bool) map[K]V

Filter takes a map with keys K and values V, and executes the passed in function for each key-value pair. If the filter function returns true, the key-value pair will be included in the output, otherwise it is filtered out.

package main

import (
    "fmt"

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

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

    result := maputils.Filter(vegetables, func(key string, value int) bool {
        return value == 5
    })

    fmt.Print(result) // { "potatoes": 5 }
}