Mk-Etlinger

import React, { Component } from 'react';

class ChatBox extends Component {
    constructor() {
        super();

        this.state = {
           maintainState: 'here'
        }
    }

Mk-Etlinger

class Columns extends React.Component {
  render() {
    return (
      <React.Fragment>
        <td>Hello</td>
        <td>World</td>
      </React.Fragment>
    );
  }
}

Mk-Etlinger

render() {
  // React does *not* create a new div. It renders the children into `domNode`.
  // `domNode` is any valid DOM node, regardless of its location in the DOM.
  return ReactDOM.createPortal(
    this.props.children,
    domNode,
  );
}

Mk-Etlinger

"<table>
  <tr>
    <td>Hello</td>
    <td>World</td>
  </tr>
</table>"

Mk-Etlinger

// Input: [ 2, 7, 11, 15 ]

//* Use a nested for loop
//* compare the current num(i) to the next num(k++) and check if they match
//* if they match then return both indices in an array

// Output: [ 0, 1 ]

// edge cases: ??

Mk-Etlinger

var twoSum = function(nums, target) {
    let indicesArray = [];
    for (let i = 0; i < nums.length; i++) {
        for (let k = i + 1; k < nums.length; k++) {
            if (nums[i] + nums[k] === target) {
                indicesArray.push(i, k)
            }
        }    
    }
    return indicesArray;

Mk-Etlinger

var twoSum = function(nums, target) {
    let dictionary = {}
    let complementValue = 0;
    let indicesArray = [];
    
    for (let i = 0; i < nums.length; i++) {
        complementValue =  target - nums[i];
        if (dictionary.hasOwnProperty( complementValue )) {
            return indicesArray = [ dictionary[complementValue], i ]
        }

Mk-Etlinger

const myWorkSchedule = { 
	monday: '10-5',
	tuesday: '10-5',
	friday: '11-9'
 }

const updatedSchedule = Object.assign({}, myWorkSchedule, { thursday: '8-5' })

updatedSchedule
// {monday: "10-5", tuesday: "10-5", friday: "11-9", thursday: "8-5"}

Mk-Etlinger

const myWorkSchedule = { 
	monday: '10-5',
	tuesday: '10-5',
	friday: '11-9'
 }

const updatedSchedule = { thursday: '11-6', ...myWorkSchedule }

updatedSchedule
// {thursday: "11-6", monday: "10-5", tuesday: "10-5", friday: "11-9"}

Mk-Etlinger

  def sorcery
    controller_name = params['controller']
    controller_name.chop!
    model_name = controller_name.capitalize
    instance_variable_set('@' + controller_name, Object.const_get( model_name ).find_by(id: params[:id]))
  end