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Lesson_1_2
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master
Author | SHA1 | Date |
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f2cb6cf6dd | |
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25a4e7d988 |
145
src/index.ts
145
src/index.ts
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@ -1,20 +1,137 @@
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function DrawLine(count: number){
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const minimalString = '*';
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console.log(minimalString.repeat(count));
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// ########################## УЧЕБНЫЙ ТЕКСТ ############################################################
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//******************************************************************************************************
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interface People {
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name: string;
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age: number | undefined;
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}
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let chisloN: number = 10;
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let people01: People = {
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name: "Kostya",
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age: undefined
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};
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//i++ => i = i + 1
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//i-- => i = i - 1
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//--i => i = i - 1
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// for(let i = 0; i < count; i++){
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// str = str + '*' // i = 0 => str = '*' // i == 1 => '**' // i = 2 => '***'
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// }
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for(let index = 1; index <= chisloN; index++){
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DrawLine(index);
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let people02: People = {
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name: "Yura",
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age: 32
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}
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people01.age = 60;
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// console.log(people01);
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// console.log(JSON.stringify(people01));
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// console.log(people01.age);
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console.log(`${people01.name} имеет возраст ${people01?.age ?? '40'}`); //Kostya --- 60
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console.log(`${people02.name} имеет возраст ${people02?.age ?? '40'}`); //Yura --- 32
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console.log(`${people01.name} имеет возраст ${people02?.age ?? '40'}`);
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interface PeopleLocation extends People {
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location: string;
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}
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let peopleLocation01: PeopleLocation = {
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name: "djdf",
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age: 42342,
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location: "dafdf"
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}
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class ProcessingPeoples implements PeopleLocation {
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name: string;
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age: number | undefined;
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location: string = '';
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constructor(name: string){
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this.name = name;
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}
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}
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let str: string = 'test text';
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let proc1 = new ProcessingPeoples(str)
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console.log(proc1)
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proc1.name = 'new test'
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console.log(proc1)
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class ProcessingPeoplesExt extends ProcessingPeoples {
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isActive: boolean = false;
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constructor(name: string, isActive: boolean){
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super(name);
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if(isActive) {
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this.location = 'Gorkyi street';
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}
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else{
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this.location = '';
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}
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}
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}
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let a: ProcessingPeoples = new ProcessingPeoplesExt("Vasya", true);
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class Duck {
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type: string = 'Duck';
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weight: number = 0;
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log(){
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console.log("I'm simple duck");
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}
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}
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let Utka: Duck = new Duck();
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Utka.log();
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interface Eateable {
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eat(): void; //пустота, функция ничего не принимает и не возвращает.
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}
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class GreyDuck extends Duck implements Eateable{ //наследоваться можно от другого класса только один раз, но!! реализация интерфейсов может быть не ограниченно количество раз
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constructor() {
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super(); // в данном примере, если используется конструктор и при этом этот конструктор наслеедуется от родителя, то мы обязаны вызывать конструктор родителя.
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this.type = 'GreyDuck'
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}
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override log(){
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console.log("I'm grey duck");
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}
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eat(){
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console.log("I'm eat");
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}
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}
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class RedDuck extends Duck implements Eateable {
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constructor() {
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super();
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this.type = 'RedDuck'
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console.log(`Object created ${this.type}`)
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}
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eat(): void {
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console.log("I'm eat");
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}
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override log(){
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console.log("I'm red duck");
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}
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}
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let duck1 = new RedDuck();
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let duck2 = new GreyDuck();
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let array: Eateable[] = [
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duck1,
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duck2
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];
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let result = array[0]; //мы можем проверить содержание массива с именем array. в квадратных скобках мы указали ноль = это первый эелемент массива.
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console.log(`результат содержимого массива${JSON.stringify(result)}`); //вывод на экран
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for (let item of array) {
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item.eat();
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}
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let array2: Duck[] = [
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duck2,
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duck1
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];
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for (let item of array2) {
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item.log();
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}
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array2.filter(item => "eat" in item); //тестирование не относится к тексту выше
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19
src/input.ts
19
src/input.ts
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@ -1,19 +0,0 @@
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import readline from 'node:readline';
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export function ConsoleInput(text: string): string {
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let result: string = '';
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const rl = readline.createInterface({
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input: process.stdin,
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output: process.stdout,
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});
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rl.question('Enter something:', value => {
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result = value;
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rl.close;
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});
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return result;
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}
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