jdkanani

// pragma solidity >=0.4.22 <0.6.0;
pragma solidity >=0.5.2 <0.6.0;

import { ERC20 } from "openzeppelin-solidity/contracts/token/ERC20/ERC20.sol";
import { ERC20Detailed } from "openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol";

import { LibTokenTransferOrder } from "./libs/TokenTransferOrder.sol";
import { ECRecover } from "./libs/ECRecover.sol";

contract ChildERC20 is ERC20, ERC20Detailed, LibTokenTransferOrder, ECRecover {

jdkanani

import { extendObservable } from "mobx"
import { firebaseActions } from "../plugins/mobfire"

export default class FireModel {
  // constructor
  constructor(data = {}) {
    // treat data as properties
    const v = {}
    Object.keys(data).forEach(key => {
      if (key !== ".value" && key !== ".key" && key !== "_id") {

jdkanani

pragma solidity ^0.4.24;


import "./RLP.sol";
import "./ECVerify.sol";

contract ATestRLP {
  using RLP for bytes;
  using RLP for RLP.RLPItem;
  using RLP for RLP.Iterator;

jdkanani

Verifying my identity on Peepeth.com 0x01c7664ea0e4fa975ad3b9b97794e9b0c3901985

jdkanani

#!/bin/bash
# Copyright 2017 Parity Technologies (UK) Ltd.

set -x

## Update this with any new relase!
VERSION_STABLE="1.11.8"
VERSION_BETA="2.0.1"
##

jdkanani

Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.

Method 1

Backup the public and secret keyrings and trust database

cp ~/.gnupg/pubring.gpg /path/to/backups/
cp ~/.gnupg/secring.gpg /path/to/backups/
cp ~/.gnupg/trustdb.gpg /path/to/backups/

or, instead of backing up trustdb...

jdkanani

import Web3 from 'web3'

function getCallback(payload, cb) {
  return function(err, result) {
    const obj = {}
    const keys = ['id', 'jsonrpc']
    keys.forEach(key => {
      obj[key] = payload[key]
    })
    obj.result = result

jdkanani

// web3 contract
var web3Contract = new web3.eth.Contract(abi, address);

// dagger contract
var contract = dagger.contract(web3Contract);
var filter = contract.events.Transfer({filter: {from: '0x123456...'}, room: 'latest'});
// watch
filter.watch(function(data, removed){
    // data.returnValues.to : address to which it has been transferred to
    // data.returnValues.value : value which has been transferred

jdkanani

Verifying my Blockstack ID is secured with the address 1BmZj9kZEstcPsVLbLmR1vYLe8QhunpApG https://explorer.blockstack.org/address/1BmZj9kZEstcPsVLbLmR1vYLe8QhunpApG

jdkanani

sudo fallocate -l 1G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo swapon --show
sudo cp /etc/fstab /etc/fstab.bak
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf
sudo sysctl vm.vfs_cache_pressure=50