stephanedeluca

//﷽
// zid.upload.js: Image upload
// Derived from ALADDIN work by Stéphane de Luca on Tuesday July 13th 2017
// Copyright ALADDIN © 2013 by Stéphane de Luca

// Release notes:
// — v1b0: Tuesday July 13th 2017 15h47: Initial version.
// — v1b1: Tuesday July 13th 2017 21h50: support M2S url publising.
// — v1b2: Wednesday July 26th 2017 14h24 @ Paris: support max size error.
// — v1b3: Thursday July 27th 2017 10h58 @ Paris les Halles chez Monop : Fixed error propagation.

stephanedeluca

/*
Reverse the CRC16 from the data sample.
@Author Stéphane "Sdl" de Luca on Friday June 10th 2022 4:22 in Tangier, Morocco.
@See https://crypto.stackexchange.com/questions/100474/how-can-i-reverse-a-so-called-crc16-from-the-data/100511#100511 for indepth information.
*/

int crc16(int value) {
    const table = [
      //0xBB83, //0000
      0x7A43,   // 0001

stephanedeluca

//import 'dart:ffi';

int crc16Modbus(List<int> bytes){
  const crc16 = 0xA001;
  int crc = 0xFFFF;

  if (false) {
    for (int pos = 0; pos < bytes.length; pos++) {
        crc ^= bytes[pos];     // XOR byte into least sig. byte of crc

stephanedeluca

/// Shows what to do when creating an enum value from a integer value

enum ThemeColor { red, green,}


void main() {
  
  try {
    final nonExistent = ThemeColor.values[3];
    print("Non existent enum is $nonExistent");

stephanedeluca

//import 'dart:io';

//import 'dart:convert';
//const c = [0, 0, 184, 84, 0, 2, 40, 3, 100, 65, 36, 97, 0, 1, 0, 0, 0, 0, 0, 0, 8, 252, 0, 0, 0, 2, 167, 120, 119, 177, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 115, 0, 0, 0, 0, 12, 0, 0, 1, 0];
/// @history Create by Sdl on Friday April 21th 2023 

/// Expecte results:
/// {cache-control: max-age:0, content-length: 24, content-md5: qVT+sY2zlNke425Qebybmw==, content-type: application/octet-stream, date: Fri, 21 Apr 2023 07:35:20 GMT, etag: 0x8DB41BEC85E6579, last-modified: Thu, 20 Apr 2023 16:46:26 GMT, x-ms-blob-type: BlockBlob, x-ms-lease-status: unlocked, x-ms-request-id: cbe6933b-c01e-0002-8023-747c9b000000, x-ms-version: 2009-09-19}
/// OK: reponse is: [7, 231, 4, 20, 24, 66, 0, 0, 1, 0, 0, 0, 0, 0, 39, 153, 0, 0, 39, 153, 0, 0, 40, 8]
/// File date: 4/20/2023 24:66

stephanedeluca

import 'package:flutter/material.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

stephanedeluca

import 'package:flutter/material.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override

stephanedeluca

# The virtual CPU implementation test

Hello, I am Steven de Luca, CTO. 

I'd like to engage you in a test which consits of designing and implementing a virtual processor capables of running actual small binary programs.

In this test, I 'd like to evaluate your understanding of a technical problem to solve, measure your sw architecturing skills and the quality of the code you write, including style and maintainability over time and across a whole team.

It is probable that you never use Dart language so far, learning it during the test is also a way to evaluate your capacity to face the ever changing nature of the programing world.

stephanedeluca

import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {

stephanedeluca

import 'package:flutter/material.dart';

// lets define the stateless part of the screen (AppBar, app title, background color...)
class MetaDataAdScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
  return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: "product informations",
      home:Scaffold(