stupeters187

Must be aware of buyer, seller and arbiter (addresses)
Must be aware of current escrow amount (uint)
Must be able to accept and hold ether in escrow
Must be able to send the funds to seller upon successful transaction
Must be able to refund the funds to the buyer upon unsuccessful transaction
Must be able to display current value of contract
Must store all of the transaction info in event(s) logs

.transfer function

Apparently testrpc development has been taken over by truffle, so they have a new tool:

https://github.com/trufflesuite/ganache-cli

Install, in one terminal tab run ganache-cli, and that will start the local blockchain. In the root directory run truffle migrate and your contracts will be deployed to localhost:8545.

You can access everything in node console like so:

const Web3 = require('web3');

Decypher.tv - video 15 - The Block Gas Limit

Over the next few lessons we will use a simple crowdfunding contract
CrowdFund will have 3 pieces of state:
- address public beneficiary;
  - who recieves the money if the campaign is successful
uint256 public goal;

	pragma solidity ^0.4.24;

	import "./ERC20.sol";
	import "./SafeMath.sol";
	import "./Ownable.sol";


	/**
	* @title Standard ERC20 token
	*

	1. SELECT isbn
	FROM editions
	WHERE publisher_id = 59;

	2. SELECT isbn, title
	FROM books
	JOIN editions on books.id = editions.book_id
	WHERE publisher_id = 59;

	3. SELECT stock, retail, title, editions.isbn