DerayGa’s gists

DerayGa / ethereumjs-tx-example

Last active December 7, 2016 13:36 — forked from noeleon930/ethereumjs-tx-example

	'use strict'

	const Web3 = require('web3')
	const keythereum = require('keythereum')
	const Tx = require('ethereumjs-tx')

	let web3 = new Web3(new Web3.providers.HttpProvider('http://140.119.164.155:8545'));

	// read from key file
	let keyObj = {

DerayGa / re-entrancy

Created December 7, 2016 11:43 — forked from noeleon930/re-entrancy

	pragma solidity ^0.4.0;

	// THIS CONTRACT CONTAINS A BUG - DO NOT USE
	contract Fund {
	/// Mapping of ether shares of the contract.
	mapping(address => uint) shares;
	/// Withdraw your share.
	function withdraw() {
	if (msg.sender.send(shares[msg.sender]))
	shares[msg.sender] = 0;

DerayGa / library2.sol

Created November 9, 2016 12:11 — forked from noeleon930/library2.sol

	pragma solidity ^0.4.2;

	library Set {
	struct Data { mapping(uint => bool) flags; }

	function insert(Data storage self, uint value) returns (bool) {
	if (self.flags[value])
	return false; // value already there
	self.flags[value] = true;
	return true;

DerayGa / library.sol

Created November 9, 2016 11:57 — forked from noeleon930/library.sol

	pragma solidity ^0.4.2;

	library Set {
	// library 不能真的有狀態變數，但呼叫 library 的合約可以擁有 (請見下方 contract)
	struct Data { mapping(uint => bool) flags; }

	// 加上 storage 修飾字之後，self 就會指向呼叫 library 的合約的某個狀態變數
	// 此為 library 特有的功能
	function insert(Data storage self, uint value) returns (bool) {
	if (self.flags[value])

DerayGa / BuyNccuCoin

Last active November 9, 2016 11:42 — forked from noeleon930/BuyNccuCoin

	pragma solidity ^0.4.0;

	contract BuyNccuCoin {
	address public minter;
	mapping (address => uint) public balances;

	event Sent(address from, address to, uint amount);

	function BuyNccuCoin() {
	minter = msg.sender;

DerayGa / gist:9f8691c56d802b4962827c49564d546d

Created November 5, 2016 04:03 — forked from anonymous/gist:1ea6e3abaf50599659675e4d075a5980

	contract GradesContract {
	address public teacher;

	mapping (address => Grades) studentGrades;

	address[] studentIds;

	struct Grades {
	uint ChineseGrade;
	uint EnglishGrade;

DerayGa / console.log() snippet for Sublime Text 2

Last active November 5, 2016 01:11 — forked from hzlzh/gist:3128038

console.log() snippet for Sublime Text 2

	<snippet>
	<!-- put this file in /packages/User/<Folder Name>/console_log.sublime-snippet then restart your Sublime Text 2 -->
	<content><![CDATA[console.log($1);$0]]></content>
	<tabTrigger>conl</tabTrigger>
	<scope>text.html,source.js</scope>
	<description>console.log()</description>
	</snippet>

	<snippet>
	<!-- put this in another file /packages/User/<Folder Name>/console_dir.sublime-snippet then restart your Sublime Text 2 -->

DerayGa / gist:0b75ab49259ee62d5aa3b5f11d908126

Created October 19, 2016 13:37 — forked from noeleon930/gist:6fbe3effffba92241f7b4957e4ac3f66

	pragma solidity ^0.4.0;

	contract NccuBank {
	address public minter;
	mapping (address => uint) public balances;

	event Sent(address from, address to, uint amount);

	function NccuBank() {
	minter = msg.sender;

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