NoahMarconi

# Report


## Gas Optimizations


| |Issue|Instances|
|-|:-|:-:|
| [GAS-1](#GAS-1) | Use `selfbalance()` instead of `address(this).balance` | 10 |
| [GAS-2](#GAS-2) | Use assembly to check for `address(0)` | 44 |

NoahMarconi

const MetaCoin = artifacts.require("MetaCoin");
const SafeMath = artifacts.require("SafeMath");

const mode = process.env.MODE;


let metaCoinInstance;
let safeMathInstance;

contract("MetaCoin", accounts => {

NoahMarconi

pragma solidity ^0.4.24;
pragma experimental ABIEncoderV2;


contract ABIExample {

  enum Permission { ReadOnly, Write, Admin }

  struct User {
    uint256 id;

NoahMarconi

pragma solidity ^0.4.24;
pragma experimental ABIEncoderV2;
 
 
contract ABIExample {
 
  enum Permission { ReadOnly, Write, Admin }
 
  struct User {
    uint256 id;

NoahMarconi

Verifying my Blockstack ID is secured with the address 133xJqzjTTm3wpNeMS34tfdFENYteAAB1z https://explorer.blockstack.org/address/133xJqzjTTm3wpNeMS34tfdFENYteAAB1z

NoahMarconi

import org.apache.spark.sql._
import org.apache.spark.sql.functions._
import org.graphframes._

// Load from shared location.
val nodes = spark.sqlContext.read.load("/mnt/hackondata/wattpadNodes.parquet")
val edges = spark.sqlContext.read.load("/mnt/hackondata/wattpadEdges.parquet")

// Filter graphs.
val gTotal = GraphFrame(nodes, edges)

NoahMarconi

import org.apache.spark.sql.functions._

// Construct nodes table.
val newColNames = List(
  "age",
  "gender",
  "has_atleast_three_reading_lists",
  "has_profile_picture",
  "id",
  "is_author",

NoahMarconi

# jdk8 setup
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

java -version

sudo apt-get install oracle-java8-set-default

wget http://downloads.lightbend.com/scala/2.11.8/scala-2.11.8.tgz

NoahMarconi

#!/usr/bin/env r
#
# run-r handler for Hook.io R runtime.
#
# Copyright (C) 2016 Noah Marconi
#
# Released under MIT

doc <- "Usage: run-r [-c CODE] [-e ENVIRONMENT] [-s SERVICE]

NoahMarconi

[ Launch: Hexagon ] 70bc5e998c801cbf03e5 by NoahMarconi