SteveBate’s gists

SteveBate / async_database.cs

Created March 30, 2015 13:22

Example of connecting to Sql Server using async, await and tasks

	async void Main()
	{
	var cnn = new SqlConnection("Data Source=ERPDBUAT;Initial Catalog=Enterprise_Misc; Integrated Security=true");
	cnn.Open();

	var cmd = new SqlCommand("SELECT * FROM ShopService.DivisionRules WHERE DivCode = 'MHL001'", cnn);
	await cmd.ExecuteReaderAsync().ContinueWith(async rdr => {
	await rdr.Result.ReadAsync().ContinueWith(ok => {
	rdr.Result.GetBoolean(rdr.Result.GetOrdinal("IsMobileEnabled")).Dump();
	rdr.Result.GetBoolean(rdr.Result.GetOrdinal("IsWebEnabled")).Dump();

SteveBate / Task.scala

Last active August 29, 2015 14:23

Implementation of my C# Task (pipe and filters) in Scala

	import scala.collection.mutable.ListBuffer

	object HelloWorld {

	def Start() {
	println("OnStart")
	}

	def Complete() {
	println("OnComplete")

SteveBate / actors.scala

Created June 29, 2015 14:07

Example of two Akka actors interacting in Scala

	import akka.actor.Actor
	import akka.actor.ActorSystem
	import akka.actor.Props

	case class RequestMessage(req: String)
	case class ResponseMessage(resp: String)

	class ClientActor extends Actor {
	def receive = {
	case ResponseMessage(resp: String) => println(resp)

SteveBate / linq.scala

Last active March 19, 2025 04:53

Scala LINQ equivalents

	// http://stackoverflow.com/questions/8104846/chart-of-ienumerable-linq-equivalents-in-scala

	xs.Aggregate(accumFunc) -> xs.reduceLeft(accumFunc)
	xs.Aggregate(seed, accumFunc) -> xs.foldLeft(seed)(accumFunc)
	xs.Aggregate(seed, accumFunc, trans) -> trans(xs.foldLeft(seed)(accumFunc))
	xs.All(pred) -> xs.forall(pred)
	xs.Any() -> xs.nonEmpty
	xs.Any(pred) -> xs.exists(pred)
	xs.AsEnumerable() -> xs.asTraversable // roughly
	xs.Average() -> xs.sum / xs.length

SteveBate / implicitsandoptions.scala

Last active August 29, 2015 14:23

A simple example touching on Implicits and Options much like C# extensions and F# Options

	object Main {

	implicit class Converter(val s: String) {

	def MaybeInt: Option[Int] = {

	try {
	Some(s.toInt)
	}
	catch {

SteveBate / readfile.scala

Last active August 29, 2015 14:24

quick demo of reading csv data and mapping to a value object before printing out a property on each object

	import scala.io.Source

	// value object - automatically implements equals and gethashcode
	case class Line(lineNo: Int, partNo: String, title: String, description: String)

	object Test {

	// converts string array into Line value object
	def toLine(args: Array[String]): Line = {
	Line(args(0).toInt, args(1), args(2), args(3))

SteveBate / budget.ml

Last active August 29, 2015 14:27

A trivial sample exploring the envelope budgeting method in OCaml

	open Printf

	type envelope = {
	name: string;
	amount: int;
	}

	type account = {
	name: string;
	balance: int;

SteveBate / facebooktest.go

Created September 15, 2015 14:25

One possible implementation of a facebook interview question that requires the developer to take a list of users and attempt to union those records that appear to represent the same user. In the sample data, user rows 0, 2, and 3 are one user and row 1 is another therefore: Given an input of these four rows, the output should consist of only 2 rows

	package main

	import (
	"fmt"
	)

	type contact struct {
	name string
	phone string
	email string

SteveBate / zipped_webrequest.go

Last active September 20, 2015 07:30

Golang example showing how to use interfaces (Writer) to compose functionality, in this case, retrieve data from a url, encode response to a base64 string, compress it, and then save to a file. Also includes sample aspects for logging and timing

	package main

	import (
	"bytes"
	"compress/gzip"
	"encoding/base64"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"

SteveBate / quicksort.cs

Created September 22, 2015 10:32

Quicksort algorithm implementations in Go and C#

	void Main()
	{
	var numbers = new int[]{11, 3, 9, 15, 7, 6, 2, 1, 5, 23, 18, 4};
	Quicksort(numbers, 0, numbers.Length-1);
	foreach(var n in numbers){
	Console.WriteLine(n);
	}
	}

	public void Quicksort(int[] elements, int left, int right)

Steve Bate SteveBate