alexroan

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "5777",
    }
  }
}

alexroan

pragma solidity >=0.5.0;

contract HelloWorld {
    string private greeting;

    constructor() public {
        greeting = "Hello World";
    }

    function getGreeting() public view returns(string memory){

alexroan

const HelloWorld = artifacts.require("HelloWorld");

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

alexroan

pragma solidity >=0.5.0;

import "truffle/Assert.sol";
import "truffle/DeployedAddresses.sol";
import "../contracts/HelloWorld.sol";

contract TestHelloWorld {
    function testItGreets() public {
        // Get the deployed contract
        HelloWorld helloWorld = HelloWorld(DeployedAddresses.HelloWorld());

alexroan

const HDWalletProvider = require('truffle-hdwallet-provider-privkey');
const privateKey = "private-key-goes-here";
const endpointUrl = "endpoint-goes-here";

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "5777",

alexroan

{
    "dependencies": {
        "truffle-hdwallet-provider": "1.0.4",
        "truffle-hdwallet-provider-privkey": "1.0.3",
        "web3": "1.0.0-beta.46"
    }
}

alexroan

const path = require("path");

module.exports = {
  contracts_build_directory: path.join(__dirname, "client/src/contracts"),
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "5777",
    }

alexroan

const HelloWorld = artifacts.require("HelloWorld");
const SimpleStorage = artifacts.require("SimpleStorage");

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

alexroan

import React, { Component } from "react";
import SimpleStorageContract from "./contracts/SimpleStorage.json";
import HelloWorld from "./contracts/HelloWorld.json";
import getWeb3 from "./getWeb3";

import "./App.css";

class App extends Component {
  state = { storageValue: 0, web3: null, accounts: null, contract: null };

alexroan

pragma solidity >=0.5.0;

contract Background {
    uint[] private values;

    function storeValue(uint value) public {
        values.push(value);
    }

    function getValue(uint initial) public view returns(uint) {