kollection

collection library for javascript

fold<U>(f: (accumulator: U, element: T) => U, initialValue: U): U

reduces a list with an initial value.

const list = new List([1, 2, 3])
const result = list.fold((a, b) => a + b, "N")

//result: "N123"

forEach(f: (element: T) => any): void

applies a function to each elements from a collection

const list = new List([1, 2, 3])
list.forEach(x => console.log(`number: ${x}`))

//number: 1
//number: 2
//number: 3

map<U>(f: (element: T) => U): List<U>

applies a function to each elements from a collection and store each result

const list = new List([1, 2, 3])
const result = list.map(x => x * 2)

//result: [2, 4, 6]

reduce(f: (accumulator: T, element: T) => T): T

reduces a list

const list = new List([1, 2, 3])
const result = list.reduce((a, b) => a + b)

//result: 6

leonardiwagner/kollection