reduce

README

Reduce

The Reduce function is used to reduce a map to a single value based on a reducer function. It takes a map, an initial value, and a reducer function as its arguments. The reducer function takes the accumulator, the key, and the value of the map as its arguments.

package main

import (
	"fmt"
	"github.com/dimasadyaksa/gomap"
)

func main() {
	m := map[string]int{
		"one":   1,
		"two":   2,
		"three": 3,
	}

	sumReducer := func(acc int, key string, value int) int {
		return acc + value
	}

	sum := gomap.Reduce(m, 0, sumReducer)

	fmt.Println(sum)
}

In this program, the gomap.Reduce function is called with the m map as its argument, an initial value of 0, and a sumReducer function that adds the value to the accumulator. The returned value is assigned to the sum variable and printed to the console.

$ go run main.go
6