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const validateMethods = {
  noMeta: function (arrayHashtag) {
    return arrayHashtag.some((hashtag) => hashtag.trim() === '#');
  },

  countExceeded: function (arrayHashtag, maxCount) {
    return arrayHashtag.length > maxCount;
  },

  lengthExceeded: function (arrayHashtag, maxLength) {

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// other way
function isNumber(evt) {
  evt = (evt) ? evt : window.event;
  var charCode = (evt.which) ? evt.which : evt.keyCode;
  if (charCode > 31 && (charCode < 48 || charCode > 57)) {
    return false;
  }
  return true;
}

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HOC typing

Typescript

function higherOrderFn<T extends (...args: any[]) => any>(fn: T): (...args: Parameters<T>) => ReturnType<T> {
  return (...args: Parameters<T>) => {
    return fn(args);
  };
}

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button,
html input[type="button"],
input[type="reset"] {
  border: none;
  -webkit-appearance: none;
  cursor: pointer;
}

button[disabled],
html input[disabled] {

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Прелюдия

Назовём пакет example.

tsconfig.json

{
  "compilerOptions": {
    "baseUrl": "src",
 "jsx": "react",

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// TODO check to `passive` param

function clearEventListener(target) {
    var listeners = getEventListeners(target);

    for (const key in listeners) {
        if (!listeners.hasOwnProperty(key)) {
            continue;
        }

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function collectIncorrectAnswersAndCopyToBuffer(withSpoiler) {
  const elsList = document.querySelector('main > ol');

  function getAnswerFromStorage(key) {
    const value = localStorage.getItem(key);

    if (!value) {
      return 'Unknown';
    }

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Think about your behavior!

collectIncorrectAnswersAndCopyToBuffer.js

4: Prototypal Inheritance

5: Console Log Fetch

8: Short-Circuit Notification(s)

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Задание

Описание

Матрицу можно представить в виде двумерного списка. Например, список [[1, 2, 3], [4, 5, 6], [7, 8, 9]] — это отображение матрицы:

1 2 3
4 5 6
7 8 9

inomdzhon

Android Studio emulator (Mac OS)

emulator-commandline documentation

For first download Android Studio.

Quick start

For start emulator