YKalashnikov

WHAT'S WRONG WITH THE CODE?


# Write a method that converts an array of ten integers into a phone number in the format "(123) 456-7890".
def to_phone_number(arr)
  chunk_one = arr[0..2].join
  chunk_two = arr[3..5].join
  chunk_three = arr[6..9].join
  "(" + chunk_one + ")" + " " + chunk_two + "-" + chunk_three
end

YKalashnikov

function booWho(bool) {
  // the fastet way to solve this problem
  return typeof bool==="boolean";
}

booWho(null);

/* another way to solve it

YKalashnikov

https://codepen.io/AK-47/pen/goVORq

YKalashnikov

class Box extends React.Component{
  constructor(props){
    super(props)

    var c = []  
    for(var i=0; i<100; i++){ 
      c.push( <Cell key={i} id={i} cells={c} /> ) 
    }

    this.state={cells:c}

YKalashnikov

 [
  {"_id":1,"title":"Unlocking Android","isbn":"1933988673","publishedDate":{"$date":"2009-04-01T00:00:00.000-0700"},"shortDescription":"Unlocking Android: A Developer's Guide provides concise, hands-on instruction for the Android operating system and development tools. This book teaches important architectural concepts in a straightforward writing style and builds on this with practical and useful examples throughout.","longDescription":"Android is an open source mobile phone platform based on the Linux operating system and developed by the Open Handset Alliance, a consortium of over 30 hardware, software and telecom companies that focus on open standards for mobile devices. Led by search giant, Google, Android is designed to deliver a better and more open and cost effective mobile experience. Unlocking Android: A Developer's Guide provides concise, hands-on instruction for the Android operating system and development tools. This book teaches important architectural concepts in a straightforward writing st

YKalashnikov

import React, {Component} from 'react';

class App extends Component {
  render() {
    return (
      <h1>Redux Form</h1>
    )
  }
}
export default App;

YKalashnikov

import React, {Component} from 'react';
import {Field, reduxForm} from 'redux-form';

class LoginForm extends Component {
  render () {
    const {handleSubmit} = this.props;
    return (
      <form onSubmit={handleSubmit}>
        <Field

YKalashnikov

mport React, {Component, Fragment} from 'react';
import LoginForm from '../components/LoginForm';

class App extends Component {
  
  submit = values => {
    window.alert (JSON.stringify (values));
  };
  
  render () {

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import React from 'react';

export const myInput = props => {
  return (
    <input {...props.input} type={props.type} placeholder={props.placeholder} />
  );
};

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export const validate = inputs => {
  const errors = {};
  if (!inputs.username) {
    errors.username = 'Введите имя пользователя';
  } else if (inputs.username !== 'Юрчик') {
    errors.username = 'Имя пользователя неверно';
  }
  if (!inputs.password) {
    errors.password = 'Введите ваш пароль';
  }