MichalZalecki

import sys
import subprocess
import re


def convert_to(folder, source, timeout=None):
    args = [libreoffice_exec(), '--headless', '--convert-to', 'pdf', '--outdir', folder, source]

    process = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, timeout=timeout)
    filename = re.search('-> (.*?) using filter', process.stdout.decode())

MichalZalecki

function toPairs(obj) {
  return Object.entries(obj); // ES2017
}

describe("toPairs", () => {
  it("transforms object to key-value pairs", () => {
    expect(toPairs({ foo: "bar", foz: "baz" })).toEqual([
      ["foo", "bar"],
      ["foz", "baz"]
    ]);

MichalZalecki

import Web3 from "web3";

const web3 = new Web3(Web3.givenProvider);
const web3Events = new Web3(new Web3.providers.WebsocketProvider("wss://mainnet.infura.io/ws"));

const Contract = new web3.eth.Contract(ABI, ADDRESS);
const ContractEvents = new web3Events.eth.Contract(ABI, ADDRESS);

MichalZalecki

// STOP!
// Are you thinking of using this in an app? Don't!
// This script is designed for interactive use in the go-ethereum console.
// For use in an app, consider one of these fine libraries:
//  - https://www.npmjs.com/package/ethjs-ens
//  - https://www.npmjs.com/package/ethereum-ens

function namehash(name) {
    var node = '0x0000000000000000000000000000000000000000000000000000000000000000';
    if (name !== '') {

MichalZalecki

const SimpleToken = artifacts.require("./SimpleToken.sol");
const PresaleCrowdsale = artifacts.require("./02-presale-multiple-rounds/PresaleCrowdsale.sol");

module.exports = (deployer, network, [owner]) => {
  return deployer
    .then(() => deployer.deploy(SimpleToken, "Tooploox", "TPX", 18, 21000000))
    .then(() => deployer.deploy(PresaleCrowdsale, 10000, owner, SimpleToken.address, owner))
    .then(() => SimpleToken.deployed())
    .then(token => token.increaseApproval(PresaleCrowdsale.address, 1000000 * (10 ** 18)));
};

MichalZalecki

import { performance } from "perf_hooks";
import { SHA256 as sha256 } from "crypto-js";

function calculateTarget(difficulty: number): number {
  return Math.ceil(2 ** 256 / difficulty);
}

function padLeft(str: string, to: number, chr: string): string {
  return str.length < to ? padLeft(chr + str, to, chr) : str;
}

MichalZalecki

pragma solidity 0.4.24;

import "github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol";


/// @title Scalable Reward Distribution
/// @dev ref. http://batog.info/papers/scalable-reward-distribution.pdf
contract ScalableRewardDistribution {
  using SafeMath for uint256;