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View EOS Smart Contract

Getting started writing Smart Contracts with EOS

This information has been extrapolated from

Latest version of EOS when writing: 1.4.0

Note: the Developer Portal has a number of older links inside it. Some of the URLs contain older version numbers. For example, if you use the breadcrumbs at the top, things can get confusing as the latest version shows as v1.3.0 which has different C++ syntax due to the latest changes in eosio.cdt )Contract Development Toolkit)

Environment Setup

View Deferred.js
module.exports = class Deferred {
constructor() {
this._promise = new Promise((resolve, reject) => {
this._resolve = resolve;
this._reject = reject;
resolve(value) {
# via
git for-each-ref --sort=committerdate refs/heads/ --format="%(HEAD) %(color:yellow)%(refname:short)%(color:reset) - %(color:red)%(objectname:short)%(color:reset) - %(contents:subject) - %(authorname) (%(color:green)%(committerdate:relative)%(color:reset))"
View index.html
<!DOCTYPE html>
<meta charset="utf-8"/>
<title>es6 proxy #jsbench #jsperf</title>
<script src=""></script>
<script src="./suite.js"></script>
<h1>Open the console to view the results</h1>

#Create dynamic objects in a nodejs6 REPL with Proxy

Nodejs 6.x comes with ES6 Proxy support baked in. Just like Ruby's method-missing (aka ghost methods), you can intercept getters and setters on an object and, like ActiveRecord in Rails, write rich APIs that can take any method or property name you like.

They are particularly fun in a REPL, where you might want to handle undefined variables.

For example, say we started a nodejs REPL via:

View App.js
import Start from './Start'
import NextPage from './NextPage'
const Views = { Start, NextPage }
initialRoute={{ view: 'Start' }}
renderScene={(route, navigator) => {
const SceneComponent = Views[route.view];
return <SceneComponent {...route.props} navigator={navigator} />;
#Usage echoline LINE_NUMBER FILE
function echoline() { sed -n "$(($1 - 5)),$(($1 + 5))p" $2; }
View gist:3987615
git branch --merged master | grep -v 'master$' | xargs git branch -d
View gist:3987610
git branch -r --merged master | sed 's/ *origin\///' | grep -v 'master$' | xargs -I% git push origin :%
class Person
info: {}
setName: (name) -> = name
justin = new Person()
justin.setName "justin"
paul = new Person()