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const blankLinesPattern = /^\s+$/gm; // the only regex that works fine
const blankLinesRegex = new RegExp(blankLinesPattern);
const data = `900,10,1,1,1,1,1,1,1,1,1,1
100,2,1,1,1,2,1,2,1,1,1,1


       `;

var match;
while (!!(match = blankLinesPattern.exec(data))) {

andrewlistopadov

import { Subject, Observable, ConnectableObservable, from, interval } from 'rxjs';
import { multicast, refCount } from 'rxjs/operators';

// https://rxjs-dev.firebaseapp.com/guide/subject

// {
//   console.log(`UNICAST VS MULTICAST`);

//   const subject = new Subject<number>();
 

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var trimCanvas = (function() {
    function rowBlank(imageData, width, y) {
        for (var x = 0; x < width; ++x) {
            if (imageData.data[y * width * 4 + x * 4 + 3] !== 0) return false;
        }
        return true;
    }

    function columnBlank(imageData, width, x, top, bottom) {
        for (var y = top; y < bottom; ++y) {

andrewlistopadov

  // resolve after 500msec.
  of(null).pipe(delay(500));
  
  
  // reject after 600msec.
  function makeRequest(timeToDelay) {
    return of('Request Complete!').pipe(delay(timeToDelay));
  }

  return of(600)

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const arr = [{name: 'Bill', age: 26}, {name: 'Sara', age: 42}, {name: 'Tom', age: 13}];
const namesArray = arr.map(({age, ...keepAttrs}) => keepAttrs); // removes `age`

console.log(namesArray);

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function getRejectedPromise() {
  const promise = new Promise((resolve, reject) => {
    reject('some error');
  });
  return promise;
}

let counter = 0;
const interval = setInterval(() => {
  if (++counter > 10) clearInterval(interval);

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interface Options {
  a?: string;
  b?: number;
  c?: Array<any>
}

const fullOptions = {a: 'a-full', b: 100, c: ['a-full', 100, null]};
const partialOptionsA = {a: 'a-1'};
const partialOptionsB = {b: 200};
const partialOptionsC = {c: ['a-2', 300, null]};

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let str = '123QWEqwe#$\\g/cm³'
let result = str.replace(/[^A-Za-z0-9\p{No}]/g, '');

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btn  -  Button 
cb   -  CheckBox 
cbl  -  CheckBoxList 
dd   -  DropDownList 
hl   -  Hyperlink 
img  -  Image 
ib   -  ImageButton 
lbl  -  Label 
lnk  -  Link
lbtn -  LinkButton 

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'use strict';

/**
 * isNumeric(n) returns a bool value
 * is "n" number or not
 *
 * @param {Number} n
 * @return {Bool} result
 */
function isNumeric(n) {