js reducer style in go, with interfaces

goreducerinterface.go

// a hack

package main

import "fmt"

type auto interface{}
type reduceClosure func(auto, auto, int, auto) auto

type Reducable interface{
	reduce(reduceClosure, auto) auto
}

type stringArray []string

func (strArr stringArray) reduce(fn reduceClosure, acc auto) auto {
	for i, v := range strArr {
		acc = fn(acc, v, i, strArr)
	}
	
	return acc
}

func main() {
	var i Reducable
	
	words := stringArray{
		"Who", "let", "the", "dogs", "out",
	}
	
	i = words
	
	wordsFlatLength := i.reduce(func(acc, word auto, i int, words auto) auto {
		xacc, xaccok := acc.(int)
		xword, xwordok := word.(string)
		if xaccok && xwordok {
			return xacc + len(xword)
		} else {
			return acc
		}
	}, 0)
	
	fmt.Println("Flat words length:", wordsFlatLength)
}