TravisMullen

// limit the number of events per second
function throttle(callback, delay) {
  var previousCall = new Date().getTime();
  return function() {
    var time = new Date().getTime();
    if ((time - previousCall) >= delay) {
      previousCall = time;
      callback.apply(null, arguments);
    }
  };

TravisMullen

$ sudo chown -R $(whoami) /usr/local

TravisMullen

/* global eth, miner, admin, net, web3 */
// For Ethereum Networks with light activity
// automatically enable and disbale miner
//
// set var `thread` in global geth instance to change CPUs
//
// in geth console `geth attach`
// > loadScript('eth-smart-mine.js')
//
// adhered to standardjs.com/

TravisMullen

function supportsSvg() {
    return document.implementation.hasFeature('http://www.w3.org/TR/SVG11/feature#Image', '1.1');
}

function supportsObjectCreate() {
    // 
    // Desktop 
    // Browser         | Firefox | (Gecko) | Internet Explorer | Opera | Safari
    // Basic support   | 5       | 4.0 (2) | 9                 | 11.60 | 5
    // 

TravisMullen

// Oraclize get data using `FlowCommunications/JSONPath`
json(https://data.ny.gov/resource/h6w8-42p9.json).[0].mega_ball

TravisMullen

// Oraclize get data using `FlowCommunications/JSONPath`
// https://github.com/FlowCommunications/JSONPath#expression-syntax
// test with https://jsonpath.curiousconcept.com/

// these APIs are public and do not require Authorization

// from kraken (returns String)
json(https://api.kraken.com/0/public/Ticker?pair=ETHUSD).result.XETHZUSD.c.[0]
// from cryptocompare (returns Number[Float])
json(https://min-api.cryptocompare.com/data/price?fsym=ETH&tsyms=USD).USD

TravisMullen

pragma solidity ^0.4.10;

/* taking ideas from FirstBlood token */
contract SafeMath {

    /* function assert(bool assertion) internal { */
    /*   if (!assertion) { */
    /*     throw; */
    /*   } */
    /* }      // assert no longer needed once solidity is on 0.4.10 */

TravisMullen

// Manages contract ownership.
contract Owned {
    address public owner;
    function owned() {
        owner = msg.sender;
    }
    modifier onlyOwner {
        if (msg.sender != owner) throw;
        _;
    }

TravisMullen

function loadWeb3 () {
  let web3Injected = window.web3;
  if(typeof web3Injected !== 'undefined'){
    // detect MetaMask.io
    web3 = new Web3(web3Injected.currentProvider)
  } else {
    // eth node
    web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'))
  }
}

TravisMullen

// give me the raw wei
export function ether (_value) {
  const value = web3.fromWei(_value, 'ether').toString(10)
  return `Ξ\t${value}`
}