• Nov 19, 2022 •CodeCatch
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function formatDate(date) { return date.toLocaleDateString(); } function Comment(props) { return ( <div className="Comment"> <div className="UserInfo"> <img className="Avatar" src={props.author.avatarUrl} alt={props.author.name} /> <div className="UserInfo-name"> {props.author.name} </div> </div> <div className="Comment-text">{props.text}</div> <div className="Comment-date"> {formatDate(props.date)} </div> </div> ); } const comment = { date: new Date(), text: 'I hope you enjoy learning React!', author: { name: 'Hello Kitty', avatarUrl: 'https://placekitten.com/g/64/64', }, }; ReactDOM.render( <Comment date={comment.date} text={comment.text} author={comment.author} />, document.getElementById('root') );
class LinkedList { constructor() { this.nodes = []; } get size() { return this.nodes.length; } get head() { return this.size ? this.nodes[0] : null; } get tail() { return this.size ? this.nodes[this.size - 1] : null; } insertAt(index, value) { const previousNode = this.nodes[index - 1] || null; const nextNode = this.nodes[index] || null; const node = { value, next: nextNode }; if (previousNode) previousNode.next = node; this.nodes.splice(index, 0, node); } insertFirst(value) { this.insertAt(0, value); } insertLast(value) { this.insertAt(this.size, value); } getAt(index) { return this.nodes[index]; } removeAt(index) { const previousNode = this.nodes[index - 1]; const nextNode = this.nodes[index + 1] || null; if (previousNode) previousNode.next = nextNode; return this.nodes.splice(index, 1); } clear() { this.nodes = []; } reverse() { this.nodes = this.nodes.reduce( (acc, { value }) => [{ value, next: acc[0] || null }, ...acc], [] ); } *[Symbol.iterator]() { yield* this.nodes; } } const list = new LinkedList(); list.insertFirst(1); list.insertFirst(2); list.insertFirst(3); list.insertLast(4); list.insertAt(3, 5); list.size; // 5 list.head.value; // 3 list.head.next.value; // 2 list.tail.value; // 4 [...list.map(e => e.value)]; // [3, 2, 1, 5, 4] list.removeAt(1); // 2 list.getAt(1).value; // 1 list.head.next.value; // 1 [...list.map(e => e.value)]; // [3, 1, 5, 4] list.reverse(); [...list.map(e => e.value)]; // [4, 5, 1, 3] list.clear(); list.size; // 0
• Nov 18, 2022 •AustinLeath
//use this with canvas file finder function NewTab(testing) { window.open(testing, "_blank"); } for(test in results) { var testing = 'https://unt.instructure.com/files/' + test + '/download'; NewTab(testing); }
• Feb 3, 2021 •C S
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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
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const insertionSort = arr => arr.reduce((acc, x) => { if (!acc.length) return [x]; acc.some((y, j) => { if (x <= y) { acc.splice(j, 0, x); return true; } if (x > y && j === acc.length - 1) { acc.splice(j + 1, 0, x); return true; } return false; }); return acc; }, []); insertionSort([6, 3, 4, 1]); // [1, 3, 4, 6]
const dragAndDropDiv = editor.container; dragAndDropDiv.addEventListener('dragover', function(e) { e.stopPropagation(); e.preventDefault(); e.dataTransfer.dropEffect = 'copy'; }); dragAndDropDiv.addEventListener("drop",function(e){ // Prevent default behavior (Prevent file from being opened) e.stopPropagation(); e.preventDefault(); const files = e.dataTransfer.items; // Array of all files console.assert(files.length >= 1); if (files[0].kind === 'file') { var file = e.dataTransfer.items[0].getAsFile(); const fileSize = file.size; const fileName = file.name; const fileMimeType = file.type; reader = new FileReader(); reader.onloadend = function(){ editor.setValue(reader.result); } reader.readAsText(file); }else{ //Maybe handle if text is dropped console.log(files[0].kind); } });