• Feb 3, 2021 •C S
0 likes • 1 view
import React, { useState } from 'react' import Welcome from '../components/Welcome' function About() { const [showWelcome, setShowWelcome] = useState(false) return ( <div> {showWelcome ? <Welcome /> : null} </div> <div> {showWelcome && <Welcome /> } </div> ) } export default App
• Aug 30, 2024 •C S
1 like • 18 views
# Acronyms ## Computer Numerical Control (CNC) - Typicalldfdfsdffdafdasgfdgfgfdfdafdasfdafda
• Nov 19, 2022 •CodeCatch
0 likes • 0 views
const compactObject = val => { const data = Array.isArray(val) ? val.filter(Boolean) : val; return Object.keys(data).reduce( (acc, key) => { const value = data[key]; if (Boolean(value)) acc[key] = typeof value === 'object' ? compactObject(value) : value; return acc; }, Array.isArray(val) ? [] : {} ); }; const obj = { a: null, b: false, c: true, d: 0, e: 1, f: '', g: 'a', h: [null, false, '', true, 1, 'a'], i: { j: 0, k: false, l: 'a' } }; compactObject(obj); // { c: true, e: 1, g: 'a', h: [ true, 1, 'a' ], i: { l: 'a' } }
0 likes • 3 views
const euclideanDistance = (a, b) => Math.hypot(...Object.keys(a).map(k => b[k] - a[k])); euclideanDistance([1, 1], [2, 3]); // ~2.2361 euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495
• Mar 11, 2021 •C S
import { configureStore } from "@reduxjs/toolkit"; import { combineReducers } from "redux"; import profile from "./profile"; import auth from "./auth"; import alert from "./alert"; const reducer = combineReducers({ profile, auth, alert, }); const store = configureStore({ reducer }); export default store;
• Jan 26, 2023 •AustinLeath
0 likes • 6 views
function printHeap(heap, index, level) { if (index >= heap.length) { return; } console.log(" ".repeat(level) + heap[index]); printHeap(heap, 2 * index + 1, level + 1); printHeap(heap, 2 * index + 2, level + 1); } //You can call this function by passing in the heap array and the index of the root node, which is typically 0, and level = 0. let heap = [3, 8, 7, 15, 17, 30, 35, 2, 4, 5, 9]; printHeap(heap,0,0)