f4hy/godash

Functional programming tools for golang using generics from go 1.18. Inspired by lodash

godash

Functional programming methods for golang inspired by lodash. Now possible using generics from go 1.18

Usage

package main

import (
	"fmt"
	__ "github.com/f4hy/godash"
)

func main() {
	example := []int{1, 2, 4, 3}
	mapped := __.Map(example, func(i int) int { return i + 1 })
	fmt.Printf("mapped: %v \n", mapped)
	// [2 3 5 4]
	greaterThan2 := func(i int) bool { return i > 2 }
	filtered := __.Filter(example, greaterThan2)
	fmt.Printf("filtered: %v \n", filtered)
	// [4 3]
	alllargerthan2 := __.All(example, greaterThan2)
	anylargerthan2 := __.Any(example, greaterThan2)
	fmt.Printf("all larger than 2: %t \n", alllargerthan2) // false
	fmt.Printf("any larger than 2: %t \n", anylargerthan2) // true

	sum := __.Reduce(example, func(acc int, i int) int { return acc + i }, 0)
	fmt.Printf("sum: %d \n", sum)
	// 10
}

Fucntions

func All[T any](values []T, predicate func(T) bool) bool
func Any[T any](values []T, predicate func(T) bool) bool
func Filter[T any](values []T, predicate func(T) bool) []T
func Find[T any](values []T, predicate func(T) bool) *T
func ForEach[T any](values []T, fun func(T))
func Map[T any, R any](values []T, mapper func(T) R) []R
func Reduce[T any, R any](values []T, reducer func(R, T) R, accumulator R) R