Siimone

modifier onlyBy(address _account)
{
  require(msg.sender == _account);
  _;
}

function changeOwner(address _newOwner)
  onlyBy(owner)
{
  owner = _newOwner;

Siimone

// Un unico costruttore, niente overloading ricorda!
function AtomicSwap() {}

Siimone

event Refunded(uint _refundTime);

event Redeemed(uint _redeemTime);

event Participated(
    address _initiator, 
    address _participator, 
    bytes20 _hashedSecret,
    uint256 _value
);

Siimone

modifier isRefundable(bytes20 _hashedSecret) {
    require(block.timestamp < swaps[_hashedSecret].initTimestamp + swaps[_hashedSecret].refundTime);
	require(swaps[_hashedSecret].emptied == false);
	_;
}
	
modifier isRedeemable(bytes20 _hashedSecret, bytes32 _secret) {
    require(ripemd160(_secret) == _hashedSecret);
	require(swaps[_hashedSecret].emptied == false);
	_;

Siimone

function initiate (uint _refundTime,bytes20 _hashedSecret,address _participant)
    payable 
    isNotInitiated(_hashedSecret)    
{
    swaps[_hashedSecret].refundTime = _refundTime;
    swaps[_hashedSecret].initTimestamp = block.timestamp;
    swaps[_hashedSecret].hashedSecret = _hashedSecret;
    swaps[_hashedSecret].participant = _participant;
    swaps[_hashedSecret].initiator = msg.sender;
    swaps[_hashedSecret].state = State.Initiator;

Siimone

contract AtomicSwap {

    enum State { Empty, Initiator, Participant }

    struct Swap {
        uint initTimestamp;
        uint refundTime;
        bytes20 hashedSecret;
        bytes32 secret;
        address initiator;

Siimone

contract Coiners {
    enum EmozioniPersona { felice, triste, normale }
    EmozioniPersona persona;

    function getEmozione() public view returns (uint) {
        return uint(persona);
    }
    
    function setFelice() returns(uint){
        persona = EmozioniPersona.felice;

Siimone

var Web3 = require("web3")
let web3 = new Web3()
web3.setProvider(new Web3.providers.HttpProvider('http://localhost:8545'))

var helloContract = web3.eth.contract([{"constant":true,"inputs":[],"name":"hello","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"pure","type":"function"}]);
var hello = helloContract.new(
    {
        from: web3.eth.accounts[0],
        data: '0x6060604052341561000f57600080fd5b6101578061001e6000396000f300606060405260043610610041576000357c0100000000000000000000000000000000000000000000000000000000900463ffffffff16806319ff1d2114610046575b600080fd5b341561005157600080fd5b6100596100d4565b6040518080602001828103825283818151815260200191508051906020019080838360005b8381101561009957808201518184015260208101905061007e565b50505050905090810190601f1680156100c65780820380516001836020036101000a031916815260200191505b509250505060405180910390f35b6100dc610117565b6040805190810160405280600c81526020017f48656c6c6f20576f726c64210000000000000000000000000000000000000000815250905090565b602

Siimone

pragma solidity ^0.4.17;

contract Hello {
  function hello() public pure returns(string) {
    return "Hello World!";
  }
}

Siimone

web3.eth.sendTransaction({
    from: '0x123...',
    data: '0x432...'
})
.once('transactionHash', function(hash){
    console.log('Hash: ' + hash)
})
.once('receipt', function(receipt){
    console.log('Receipt: ' + receipt)
})