pavel-lens

const array = [1, 2, 3, 4, 5];
for (let i=0; i < array.length; i++) {
  array[i] = array[i] * 2;
}
console.log(array); // [ 2, 4, 6, 8, 10 ]

pavel-lens

const array = [1, 2, 3, 4, 5];
const array2 = array.map((value) => value * 2);
console.log(array2); // [ 2, 4, 6, 8, 10 ]

pavel-lens

function sumDigPow(a, b) {
  const arr = [];
  for (let i = a; i <= b; i++) {
    let sum = 0;
    for (let j = 0; j <= String(i).length; j++) {
      sum += Math.pow(parseInt(String(i)[j]), j+1);  
      if (sum == i) arr.push(i);
    }
  }
  return arr;

pavel-lens

function sumDigPow(start, stop) {
  // create array from start to stop
  const arr = Array.apply(null, Array(stop-start)).map((_,i) => i+start);
  
  function calc(num) {
    const n_arr = String(num).split('').map(Number).map((n,i) => Math.pow(n,i+1));
    return n_arr.reduce((acc,n) => acc+n);
  }
  
  // create new array with numbers that match criteria

pavel-lens

<RevertApply onApplyClick={this.handleApplyClick} onRevertClick={this.handleRevertClick} >
  <Label title="Parameter 1">
    <Textbox value={param1} onChange={e => this.handleChange('param1', e)} />
  </Label>
  <Label title="Parameter 2">
    <Textbox value={param2} onChange={e => this.handleChange('param2', e)} />
  </Label>
</RevertApply>

pavel-lens

createHandleChange(callback) {
  // This has to be a ES5 function, because we need to access its `arguments`
  return (function() {
    // don't run for children that has no onChange prop
    if (!callback) {
      return
    }

    // set touched to true so we can re-render active Apply/Revert buttons
    if (!this.state.touched) {

pavel-lens

renderWrappedChildren(children) {
  // Traverse through all children with pretty functional way :-)
  return React.Children.map(children, (child) => {
    
    // This is support for non-node elements (eg. pure text), they have no props
    if (!child.props) {
      return child
    }

    // If current component has additional children, traverse through them as well!

pavel-lens

handleApplyClick() {
  const { onApplyClick } = this.props

  const result = onApplyClick()

  // Don't update state if callback is signaling failing behaviour
  if (result !== false) {
    this.setState({ touched: false })
  }
}

pavel-lens

import React from 'react'
import classnames from 'classnames'

import './revert-apply.scss'

const getClassNames = (props) => classnames(
  'revert-apply',
  {
    bordered: props.bordered,
  },

pavel-lens

const aes256 = require('aes256');
// const pbkdf2 = require('pbkdf2');
const { ec: EC } = require('elliptic');
const { expect } = require('chai');

const key = 'my passphrase';
const plaintext = 'my plaintext message';

// const MASTER_PASSWORD = 'cornflake12';
// const SALT = '2019-01-29T21:54:56.015Z';