swifty-array-helpers v1.0.6

Array Helpers for JavaScript

What is this?

A collection of functions for the Array.prototype inspired by the methods that are available in Swift

Usage

Import

You need to import the methods first. Example:

// ES6 module
import 'swifty-array-helper/firstWhere'

// node.js
require('swifty-array-helper/firstWhere')

firstIndex

Finds the index of the first element matching the predicate. Example:

const array = [5, 3, 7, 12]
const index = array.firstIndex(x -> x <= 4) // 1

firstWhere

Finds the first element matching the predicate (similar to firstIndex). Example:

const array = [5, 3, 7, 12]
const firstElementMatchingPredicate = array.firstWhere(x -> x <= 4) // 3

filteredWhere

Filters the array based on the passed predicate Example:

const array = [5, 3, 7, 12]
const filteredArray = array.filteredWhere(x -> x <= 6) // [5, 3]

compactMap

Maps all values, filtering null or undefined values out Example:

const array = [
  { name: 'Henrik' },
  { name: 'Henrik', lastName: 'Panhans' },
  { name: 'Henrik' },
  { name: 'Henrik' }
]
const lastNames = array.compactMap(value -> value.lastName) // ["Panhans"]