Raas Ahsan RaasAhsan

RaasAhsan / Main.scala

Created December 5, 2018 09:24

Advent of Code Day 5

	def shorten(s: String): String = {
	var input = s
	var done = false
	var i = 0

	while (!done) {
	val char = input.charAt(i)
	val nextChar = input.charAt(i + 1)

	if ((char.toChar - nextChar.toChar).abs.toInt == 32) {

RaasAhsan / DTALC.scala

Last active July 31, 2018 15:57

data type a la carte in scala

RaasAhsan / ParserTesting.scala

Last active January 8, 2016 22:55

A tiny parser combinator library that supports sequencing.

	package ch6

	import scala.util.matching.Regex

	object ParserTesting {

	sealed trait ParseResult[+A, +F]
	case class ParseSuccess[A](parsed: A, unparsed: String) extends ParseResult[A, Nothing]
	case class ParseFailure[F](error: F) extends ParseResult[Nothing, F]

RaasAhsan / XmlParser.java

Created January 8, 2016 06:52

	package xml;

	import java.util.ArrayList;
	import java.util.List;

	import com.jantox.xmlparser.Scanner;

	/*
	* <xmlNode> ::= "<" ~ <name> ~ ">" ~ <body> ~ "</" ~ <name> ">"
	* <letter> ::= [A-Za-z]

RaasAhsan / gist:60c1cf311495442b1efb

Created June 28, 2015 06:27

router link

	import React from 'react';

	import deepcopy from 'deepcopy';

	let RouterLink = React.createClass({

	propTypes: {
	to: React.PropTypes.string.isRequired,
	params: React.PropTypes.object,
	activeClassName: React.PropTypes.string

RaasAhsan / Router.js

Created June 28, 2015 04:26

React router component for applications

	import React from 'react';

	class Router extends React.Component {

	constructor(props) {
	super(props);
	this.state = {
	routes: props.routes,
	path: "index",
	params: {}

RaasAhsan / ast.hs

Created July 28, 2014 02:23

	data AST a = Value a \| Operation (a -> a -> a) (AST a) (AST a)

	evaluate :: (Num a) => (AST a) -> a
	evaluate (Value a) = a
	evaluate (Operation o a b) = evaluate a `o` evaluate b

RaasAhsan / Writer.scala

Created January 11, 2014 07:15

A very simple Writer monad written in Scala.


	class Writer[A](runWriter: (A, String)) {

	def apply(x: (A, String)): Writer[A] = new Writer[A](x)

	def run = runWriter

	def flatMap[B](x: A => Writer[B]): Writer[B] = {
	val (a: A, b: String) = runWriter
	val (y: B, z: String) = x(a).run

RaasAhsan / gist:4552530

Created January 17, 2013 00:50

my description of a vector

RaasAhsan / gist:4083992

Created November 16, 2012 04:14

pitch/yaw to directional vector

	// pitch and yaw are in degrees
	Vector3D getDirectionVector() {
	return new Vector3D(-Math.cos(pitch * Math.PI / 180.0) * Math.sin(yaw * Math.PI / 180.0), Math.sin(pitch * Math.PI / 180.0), -Math.cos(pitch * Math.PI / 180.0) * Math.cos(yaw * Math.PI / 180.0));
	}