Build Your First Ethereum DApp

Chapter 4: Whitelisting & Testing a Story DAO

In part 3 of this tutorial series on building DApps with Ethereum, we built and deployed our token to the Ethereum testnet Rinkeby. In this part, we’ll start writing the Story DAO code.

We’ll use the conditions laid out in the first chapter to guide us.

Contract Outline

Let’s create a new contract, StoryDao.sol, with this skeleton:

pragma solidity ^0.4.24; import "../node_modules/openzeppelin-solidity/contracts/math/SafeMath.sol"; import "../node_modules/openzeppelin-solidity/contracts/ownership/Ownable.sol"; contract StoryDao is Ownable { using SafeMath for uint256; mapping(address => bool) whitelist; uint256 public whitelistedNumber = 0; mapping(address => bool) blacklist; event Whitelisted(address ...