From c31c21fd7091215abbd2e2c07b7aa1ec38f2d4bd Mon Sep 17 00:00:00 2001
From: DazFather <39210887+DazFather@users.noreply.github.com>
Date: Wed, 30 Mar 2022 00:46:10 +0200
Subject: [PATCH] Improve first and last functions using slice
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Great video, keep up with the great work man ❤
---
 arrayUtils/arrayUtils.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arrayUtils/arrayUtils.js b/arrayUtils/arrayUtils.js
index 1ab7a87..dcca903 100644
--- a/arrayUtils/arrayUtils.js
+++ b/arrayUtils/arrayUtils.js
@@ -2,12 +2,12 @@ import { randomNumberBetween } from "../other.js"
 
 export function first(array, n = 1) {
   if (n === 1) return array[0]
-  return array.filter((_, index) => index < n)
+  return array.slice(0, n)
 }
 
 export function last(array, n = 1) {
   if (n === 1) return array[array.length - 1]
-  return array.filter((_, index) => array.length - index <= n)
+  return array.slice(-n)
 }
 
 export function sample(array) {
@@ -16,6 +16,7 @@ export function sample(array) {
 
 export function pluck(array, key) {
   return array.map(element => element[key])
+              .filter(element => element !== undefined)
 }
 
 export function groupBy(array, key) {