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@mlhaufe
mlhaufe / simulating-generics.ts
Last active Jul 8, 2019
Simulating Generics w/ Inheritance in TypeScript.
View simulating-generics.ts
abstract class Comparable {
abstract le(other: this): boolean
min(other: this): Comparable {
return this.le(other) ? this : other
}
}
abstract class Ring {
constructor(
readonly zero: Ring,
@mlhaufe
mlhaufe / ConcTree.ts
Created Jul 8, 2017
Partial Implementation of ConcTree in TypeScript
View ConcTree.ts
abstract class ConcTree<T> {
abstract left: ConcTree<T>
abstract right: ConcTree<T>
abstract level: number
abstract size: number
}
class Empty<T> extends ConcTree<T> {
level: number = 0
size: number = 0
View PubSub.ts
interface Publisher<T> {
subscribe(s: Subscriber<T>): void
}
interface Subscriber<T> {
onNext(value: T): void
onError(e: Error): void
onDone(): void
onSubscribe(s: Subscription): void
}
@mlhaufe
mlhaufe / Either.ts
Last active Jan 16, 2017
Coproducts
View Either.ts
// data Either a b = Left a | Right b
abstract class Either<A, B> {
constructor(public value: A | B) { }
}
// Inject Left
// inl a
class Left<A> extends Either<A, never>{
constructor(value: A) { super(value) }
}
// Inject Right
View jquery great maze.md

Here is my general opinion from a PLT perspective:

##Faking Ad-Hoc Polymorphism

JavaScript does not support Ad-Hoc Polymorphism (One method name with multiple implementations based on parameters). As a result, many developers (including jQuery authors) try to fake it by using double-dispatch, or an inlined Great Maze of If-Else-dom/Switch-dom. To clarify what that is in the abstract here is an example of it (in TypeScript for clarity):

abstract class Shape extends Object {
    abstract onCollisionWith(shape: Shape): void
}
@mlhaufe
mlhaufe / index.html
Last active Dec 2, 2016
strict mode efficiency comparison w/ Newtons Method (http://jsbench.github.io/#7e323ab9310ec4fc933db0883c96ce0c) #jsbench #jsperf
View index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>strict mode efficiency comparison w/ Newtons Method</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
<script src="./suite.js"></script>
</head>
<body>
<h1>Open the console to view the results</h1>
@mlhaufe
mlhaufe / Color.cs
Last active Nov 17, 2016
simple color shading
View Color.cs
using System;
public class Program
{
public static void Main()
{
Func<string,double,string> shade = (hex, pct) => {
Func<int,int,int,int> clamp =
(value,min,max) => value < min ? min : value > max ? max : value;
var num = Convert.ToUInt32(hex.Replace("#",""),16);
@mlhaufe
mlhaufe / Term.ts
Created Oct 19, 2016
Term Evaluation in Pure OO style
View Term.ts
abstract class Term<T> {
abstract eval() : T
}
class Lit extends Term<number> {
constructor(public value: number) { super() }
eval() : number { return this.value }
}
class Inc extends Term<number> {
@mlhaufe
mlhaufe / cookieManager.js
Last active Jan 10, 2017
Basic Cookie Management
View cookieManager.js
var cookieManager = {
getItem: function (sKey) {
if (!sKey) { return null; }
return decodeURIComponent(document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + encodeURIComponent(sKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1")) || null;
},
setItem: function (sKey, sValue, vEnd, sPath, sDomain, bSecure) {
if (!sKey || /^(?:expires|max\-age|path|domain|secure)$/i.test(sKey)) { return false; }
var sExpires = "";
if (vEnd) {
switch (vEnd.constructor) {
@mlhaufe
mlhaufe / handleEvent.js
Last active Jun 8, 2016
handleEvent example for ES5
View handleEvent.js
var Carousel = (function(){
"use strict"
function _handleEvent(e) { this['on' + e.type](e) },
function Carousel(el){
if(!(this instanceof Carousel))
return new Carousel(el)
this.el = el
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