BogdanHabic

// We require the Hardhat Runtime Environment explicitly here. This is optional 
// but useful for running the script in a standalone fashion through `node <script>`.
// When running the script with `hardhat run <script>` you'll find the Hardhat
// Runtime Environment's members available in the global scope.
const hre = require("hardhat");

async function main() {
  // Hardhat always runs the compile task when running scripts through it.
    // If this runs in a standalone fashion you may want to call compile manually
    // to make sure everything is compiled

BogdanHabic

// We require the Hardhat Runtime Environment explicitly here. This is optional 
// but useful for running the script in a standalone fashion through `node <script>`.
// When running the script with `hardhat run <script>` you'll find the Hardhat
// Runtime Environment's members available in the global scope.
const hre = require("@nomiclabs/hardhat");

async function main() {
  // Hardhat always runs the compile task when running scripts through it. 
  // If this runs in a standalone fashion you may want to call compile manually 
  // to make sure everything is compiled

BogdanHabic

pragma solidity >=0.4.21 <0.6.0;

contract TennisMatch {
  address public owner;

  uint8 public playerAScore = 0;
  uint8 public playerAGamesWon = 0;

  uint8 public playerBScore = 0;
  uint8 public playerBGamesWon = 0;

BogdanHabic

pragma solidity >=0.4.21 <0.6.0;

contract TennisMatch {
  address public owner;

  uint8 public playerAScore = 0;
  uint8 public playerAGamesWon = 0;

  uint8 public playerBScore = 0;
  uint8 public playerBGamesWon = 0;

BogdanHabic

pragma solidity ^0.4.24;

contract Calculator {
    uint c;

    function add(uint a, uint b) public {
        c = a + b;
    }

    function sub(uint a, uint b) public {

BogdanHabic

var Calculator = artifacts.require('Calculator');

module.exports = function (deployer) {
  deployer.deploy(Calculator);
};

BogdanHabic

var Calculator = artifacts.require("./Calculator.sol");

contract('Calculator', function (accounts) {
  it("shouldn't allow division by zero", async function () {
    const fail = await Calculator.new();
    await fail.div(5, 0);
  });
});

BogdanHabic

var Calculator = artifacts.require("./Calculator.sol");

contract('Calculator', function (accounts) {
  it("shouldn't allow division by zero", async function () {
    let error;
    const fail = await Calculator.new();
    try {
      await fail.div(5, 0);
    } catch (e) {
      error = e;

BogdanHabic

module.exports = {
  networks: {
    ganache: {
      host: "127.0.0.1",
      port: 8545,
      network_id: "*",
    },
    tenderly: {
      host: "127.0.0.1",
      port: 9545,

BogdanHabic

pragma solidity ^0.4.24;

contract Calculator {
    uint c;

    function add(uint a, uint b) public {
        c = a + b;
    }

    function sub(uint a, uint b) public {