j-j.eth jjgonecrypto

Getting started writing Smart Contracts with EOS

This information has been extrapolated from https://developers.eos.io/eosio-home/docs

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) https://developers.eos.io/eosio-cpp/v1.3.0/docs/introduction-to-smart-contracts

	// Useful if you want to run a bunch of promises in serial (which admittedly isn't very often frankly)

	exports.asyncForEach = async (array, callback) => {
	for (let index = 0; index < array.length; index++) {
	await callback(array[index], index, array);
	}
	};

	<header><img src="https://developer.synthetix.io/api/img/logo.png" /></header>

	<main>
	<p class="helper-text">Note: these results aren't strictly ordered to increase performance.</p>

	<button name="begin">Begin</button>
	<button name="stop">Stop</button>

	<ul>
	<li id="tokenHolders"><strong>Token Holders:</strong><var>?</var></li>

	const { SynthetixJs } = require('synthetix-js');

	const snxjs = new SynthetixJs();

	(async () => {
	const provider = snxjs.ethers.getDefaultProvider();
	const currentBlock = await provider.getBlockNumber();

	const totalDebtInSystemAtBlock = await snxjs.Synthetix.contract.totalIssuedSynths(
	snxjs.utils.toUtf8Bytes4('sUSD'),

	const graphAPI = 'https://api.thegraph.com/subgraphs/name/synthetixio-team/synthetix';
	const ts = Math.floor(Date.now()/1e3);
	const oneDayAgo = ts - (3600 * 24);

	const response = await fetch(graphAPI, {
	method: 'POST',
	body: `{"query":"{synthExchanges(orderBy:timestamp, orderDirection:desc, where:{timestamp_gt: ${oneDayAgo}}){id,from,gasPrice,fromAmount,fromCurrencyKey,toCurrencyKey,block,timestamp,toAddress}}","variables":null}`
	});

	const json = await response.json();

	'use strict';

	const version = process.argv[2];

	// Simple script to exit non-zero if the given version
	// usage: npm view [package] versions \| node vcheck [version]
	// eg: npm view synthetix versions \| node vcheck 2.4.1
	process.stdin
	.resume()
	.setEncoding('utf8')

	const random = require('random-js')();

	// Splits up number into times random parts
	const splitter = (number, times) => {
	const ran = random.real(0, number);
	if (times < 2) {
	return [number];
	}
	const halved = times / 2;
	if (times % 2 === 0) {

	module.exports = class Deferred {
	constructor() {
	this._promise = new Promise((resolve, reject) => {
	this._resolve = resolve;
	this._reject = reject;
	});
	}

	resolve(value) {
	this._resolve(value);

	# via http://stackoverflow.com/a/5188364/794170
	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))"

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>es6 proxy #jsbench #jsperf</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
	</head>
	<body>
	<h1>Open the console to view the results</h1>

j-j.eth jjgonecrypto

Getting started writing Smart Contracts with EOS

Environment Setup