大魔头 notyy

a consultant work in @ThoughtWorksInc china office. functional programming fans. like scala,haskell,elm.

notyy / diamondProblem.scala

Last active August 29, 2015 14:03

	package diamondProblem

	trait A{
	def hello() = println("hello from A")
	}

	trait B extends A{
	override def hello() = println("hello from B")
	}

notyy / DelDir.scala

Created March 4, 2014 09:07

	import java.io._

	def delDirNoRecur(dirName: String): Unit = {
	val dir = new File(dirName)
	if(dir.exists && dir.isDirectory){
	val files = dir.listFiles
	files.foreach(_.delete())
	println(s"delete complete ${files.size} files deleted")
	}else{
	println(s"$dirName not a directory")

notyy / future.scala

Created November 25, 2013 12:32

first code block use future promise second only use future

	import scala.concurrent.{ future, promise }
	import scala.concurrent.ExecutionContext.Implicits.global
	val p = promise[String]
	val f = p.future
	val producer = future {
	println("producing")
	Thread.sleep(1000)
	val r = "produced"
	p success r
	Thread.sleep(1000)

notyy / dci.scala

Last active December 27, 2015 07:29

	//database model
	case class Account(id: Identifier, owner: User, var balance: Money)

	object AccountRepository {
	def lookUp(id: Int):Account = Account("id1", "notyy", 100.0) //just an example
	}

	//DCI model
	class AccountHolder(val account: Account) //adaptor

notyy / code.java

Last active December 22, 2015 05:19

Option in java

	package notyy;

	public class Option<A> {
	private final A thing;

	public Option(A thing) {
	this.thing = thing;
	}

	public <E extends Exception> A getOrThrow(E excetion) throws E{

notyy / AbstractBase

Created July 27, 2013 13:19

implicit abstract class problem

	package base;

	import java.util.List;

	public abstract class AbstractBase {
	abstract protected List getChildren();
	}

notyy / gist:6093587

Created July 27, 2013 03:29

this implicit works for scala

	package com.github.notyy.retroboard.util

	import org.scalatest.FunSpec
	import org.scalatest.matchers.ShouldMatchers

	trait Base {
	protected def getChildren: List[String]
	}

	object Base {

notyy / gist:5790999

Created June 16, 2013 06:22

scaladay 2013 slide links

	https://speakerdeck.com/ryanlecompte/confessions-of-a-ruby-developer-whose-heart-was-stolen-by-scala


	Practical type mining in Scala ( Rose Toomey )
	http://www.slideshare.net/prasinous/scaladays-2013-final

	Real world akka recepies (Jamie Allen, Björn Antonsson and Patrik Nordwall)
	http://www.slideshare.net/shinolajla/real-world-akka-recepies-v3

	Scala IDE 3.0 - Present & Future ( Mirco Dotta )

notyy / gist:3958354

Created October 26, 2012 11:52

implicit list as functor

	trait Functor[A, T[_]] {
	def fmap[B](f: A => B): T[B]
	}

	class ListFunctor[A](val list: List[A]) extends Functor[A, List] {
	override def fmap[B](f: A => B): List[B] = list match {
	case List() => List()
	case (x :: xs) => f(x) :: xs.fmap(f)
	}
	}

notyy / gist:3712639

Created September 13, 2012 07:39

how to remove

	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<script>
	window.onload = doIt;
	function doIt() {
	var oDiv = document.getElementById("div1");
	alert (oDiv);
	//oDiv.removeAttribute("onclick")；
	}