mattlockyer

//with store
const STORE = {
  head: new Map(),
  undo: () => {
    const action = STORE.queue.pop();
    STORE.head = STORE.queue[STORE.queue.length - 1];
    return action;
  },
  queue: []
};

mattlockyer

const STORE = {
  head: new Map(),
  undoStack: [],
  redoStack: [],
  //implement undo
  undo: () => {
    if (STORE.undoStack.length === 1) return STORE.head;
    const action = STORE.undoStack.pop();
    STORE.head = STORE.undoStack[STORE.undoStack.length - 1];
    STORE.redoStack.push(action);

mattlockyer

/**************************************
* File Put
**************************************/
const uuidV1 = require('uuid/v1');
const multer = require('multer');
const upload = multer({ storage: multer.memoryStorage(), limits: { fileSize: 10*1024*1024 } }); //10mb limit
const fileUpload = (req, res) => {
  //get args
  const { id } = req.body;
  const file = req.file;

mattlockyer

const file = this.input.files[0];
//console.log(file);
var xhr = new XMLHttpRequest();
xhr.addEventListener('load', (e) => {
  console.log(e.target.response);
});
xhr.open('POST', host + 'fileuploadstream', true);
xhr.setRequestHeader('body', JSON.stringify({ id: 'somebucketfolderid', fn: file.name }));
xhr.send(file);

mattlockyer

import React, { Component } from 'react';
import ReactTable, { ReactTableDefaults } from 'react-table';
//https://github.com/tannerlinsley/react-table
//https://react-table.js.org/
import 'react-table/react-table.css'

Object.assign(ReactTableDefaults, {
  defaultPageSize: 10,
  minRows: 3,
});

mattlockyer

{
  "name": "",
  "description": "",
  "version": "0.0.0",
  "private": true,
  "author": "Matt Lockyer",
  "homepage": "",
  "contributors": [ "Matt Lockyer (mattdlockyer@gmail.com)" ],

mattlockyer

0xf1a11C42075F2d89aC2792B4D43E2d48457F311F

mattlockyer

const web3utils = (function() {
  /**************************************
  * Web3
  **************************************/
  const getWeb3 = (fallbackURL = 'http://localhost:8545', web3 = window.web3) => {
    if (web3 !== undefined) {
      web3 = new Web3(web3.currentProvider);
    } else {

mattlockyer

Blockchain

A transactional database where the changes in state are made by updating the difference from A to B. The transactions are bundled into blocks and cryptographically hashed to produce a unique signature. Blocks are arranged forward in time with the hash of the previous block included in the next block, this prevents tampering. Merkle tree data structures are used to efficiently store transactions and compute the current state from the root of the blockchain. Typically what is computed is the balance of an account.

Blockchain Network

A network designed to update a blockchain database. Distributed and decentralized are not prerequisites. Allows for the creation and tokenization of digital scarcity through consensus, game theory or mechanism design. Allows for the individual ownership, exchange and administration of cryptographically secured assets.

Private Permissioned Blockchain Network

Network participants chosen by centralized entity, consortium or federation.

Public Permissioned Bloc

mattlockyer

//jshint ignore: start

pragma solidity ^0.4.21;

contract Owner {
  
  address public owner;
  
  modifier onlyOwner() {
    require(msg.sender == owner);