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evertonfraga / gist:50492
Created January 22, 2009 10:28
/**
* Some cool JavaScript prototypes.
* Author: Everton Fraga <everton{shift+2}kindaconnected.com>
*
*/
/*
* Number.times:Array
* Param: int n
@evertonfraga
evertonfraga / EtherSplitter.sol
Created January 27, 2017 20:40
pragma solidity ^0.4.5;
/*
Ether Splitter é um simples contrato que divide o
ether enviado entre dois endereços.
*/
contract EtherSplitter {
// Definição de evento.
@evertonfraga
evertonfraga / VipClub.sol
Last active January 27, 2017 22:23
pragma solidity ^0.4.5;
/*
Cadastrando itens em um struct
*/
contract VipClub {
// Estrutura de dados Member, que possui os atributos `name` e `email`
struct Member {
string name;
@evertonfraga
evertonfraga / privatekey-example
Last active May 9, 2017 17:09
{
"address": "84491dabc6366120bca1801b3223cc60b693e999",
"crypto": {
"cipher": "aes-128-ctr",
"ciphertext": "b2499f41a70f9792cf6444e150d256c8ad41ee009b5a54bf6e50c073630f06e4",
"cipherparams": {
"iv": "690c2b57b2f7389aae8f452ce0b2fc2c"
},
"kdf": "scrypt",
"kdfparams": {
@evertonfraga
evertonfraga / MyToken.sol
Last active May 13, 2017 16:16
pragma solidity ^0.4.5;
contract MyToken {
/*
Variáveis públicas do token.
Elas conformam com o padrão de moedas na rede ethereum, este padrão permite integração
com as Wallets e interoperabilidade com outros contratos.
Standard ERC 20: https://github.com/ethereum/EIPs/issues/20
*/
string public standard = 'Token 0.1';
@evertonfraga
evertonfraga / gist:c405f962602ed8ed0d64b8bd1c4358dd
Created July 12, 2017 16:22
Rinkeby test address
0xAB3a5216307C0eBAdad8D70900aa7dB20dcE1EDe
@evertonfraga
evertonfraga / ethdev.md
Last active August 25, 2017 22:41
Ambiente de desenvolvimento Ethereum

Ambiente de desenvolvimento para Ethereum

Este mini-guia compreende as ferramentas necessárias para executar contratos com o Mist e desenvolver Dapps utilizando uma rede local privada.

INSTALAÇÃO

  1. Instalar Mist
@evertonfraga
evertonfraga / Distribuição de ether
Last active October 5, 2017 20:58
PROSPERA - Outubro: Distribuição de ether e Emissão de PRSP
// https://etherscan.io/address/0xa4e23286c06208645f52c57a6ef5a510e87a6d76
const Web3 = require('web3');
// const web3 = new Web3(Web3.providers.HttpProvider('https://mainnet.infura.io/bnr6Lt3Xle02EzHa3Bf5 '));
const web3 = new Web3(Web3.providers.HttpProvider('http://localhost:8545 '));
var txs = [];
var cb = function(err, hash) { txs.push(hash); console.log(err, 'https://etherscan.io/tx/'+hash) };
var myAccount = '0xa4E23286C06208645f52c57A6eF5a510e87A6d76';
@evertonfraga
evertonfraga / ABI
Last active October 13, 2017 17:22
Exemplo de entrega de projeto
[{"constant":false,"inputs":[{"name":"","type":"address"},{"name":"","type":"uint256"}],"name":"transfer","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]
@evertonfraga
evertonfraga / delegatecall.sol
Last active December 19, 2017 03:01
Prevent library direct code execution
/**
This code snippet aims to show how to prevent library methods from being executed directly.
That's achieved by baking in the address of the library before it's deployed, then comparing `address(this)` against the saved address within a modifier.
A contract/library address is deterministic, so one could inject that in: keccak256(creator_address, nonceValue).
Thanks to @pirapira, @chriseth and @arachnid for the idea.
*/