jasononeil’s gists

jasononeil / TraceMemberMethod.hx

Created September 15, 2013 10:13

In Haxe, a member trace() method does not have priority over the haxe.Log.trace()

	import haxe.PosInfos;

	class TraceMemberMethod
	{
	static function main() new TraceMemberMethod();

	public function new() {
	messages = [];

	trace( "hey" ); // Uses haxe.Log.trace()

jasononeil / AbstractExample.hx

Last active December 27, 2015 15:48

Really simple example of abstracts - creating an "extension" of AnchorElement with a custom constructor. Uses all inline code, and shows how implicit casts can be used when interacting with API that expects the underlying type.

	// Compile with `haxe -js AbstractExample.js -dce full -main AbstractExample.hx`

	import js.html.AnchorElement;

	class AbstractExample {
	static function main() {
	var myAnchor = new MyAnchor( "http://google.com", "Click here!" );
	expectsAnchor( myAnchor ); // Notice how it automatically casts back down to AnchorElement
	}

jasononeil / Test.hx

Last active January 2, 2016 16:18

`AcceptEither`, a way to accept either one type or another, without resorting to "Dynamic", and still have the compiler type-check everything and make sure you correctly handle every situation.

	class Test {
	static function main(){
	stringOrInt( "hello" );
	stringOrInt( 10 );
	}

	static function stringOrInt( either:AcceptEither<String,Int> ) {
	switch either.type {
	case Left(str): trace("string: "+str);
	case Right(int): trace("int: "+int);

jasononeil / MethodTyper.hx

Created February 19, 2014 05:11

Method used in a macro to figure out the return type of a member method. Uses tink_macro

	/**
	Figure out return type of function.

	Will first to check if it is explicitly defined.
	If not, it attempts to set the function up as a local function expression (EFunction), and then use `Context.typeof( fnExpr )` to evaluate the type.

	Will generate a compiler error if member was not a method or method type could not be determined.
	**/
	static function figureOutReturnTypeOfMemberMethod( member:Member ) {
	switch member.getFunction() {

jasononeil / Http.hx

Created March 5, 2014 22:37

Workaround for Hxssl being broken for Http requests. Drop these 4 files into a package called "haxe", and you can use this as a drop-in workaround for HxSSL breaking regular HTTP port 80 requests

	package haxe;

	@:access( haxe.Https )
	@:access( haxe.Http80 )
	class Http {

	public var h:IHttp;

	public var url(get, set) : String;
	function get_url() return h.url;

jasononeil / Metric.hx

Last active November 10, 2016 11:16

Demonstration of using Haxe abstracts to take care of explicit conversions between different units of measurement, with no performance overhead.

	class Metric {
	static function main() {
	var coinRadius:Millimeters = 12;
	var myHeight:Centimeters = 180;
	var raceLength:Meters = 200;
	var commuteDistance:Kilometers = 23;

	diff( coinRadius, myHeight ); // 1.788 meters
	diff( raceLength, commuteDistance ); // 22800 meters
	sum( commuteDistance, coinRadius ); // 23000.012 meters

jasononeil / ObjectInit.hx

Created December 2, 2014 01:19

Object initialisations syntax sugar

	import haxe.macro.Expr;
	import haxe.macro.Context;
	using haxe.macro.ExprTools;

	class ObjectInit {
	macro public static function init( expr:Expr, varsToSet:ExprOf<Dynamic<Dynamic>> ) {
	var lines:Array<Expr> = [];
	lines.push( macro var __obj_init_tmp = $expr );
	switch varsToSet.expr {
	case EObjectDecl(fields):

jasononeil / JS Callback to Future

Last active November 10, 2015 23:14 — forked from kevinresol/ JS Callback to Future

Convert js-style callback to Future, with macro

jasononeil / ReflectionCost.hx

Created June 12, 2016 12:24

Demonstrate how much extra code reflection (Reflect.* and Type.*) generate in Haxe code

	class ReflectionCost {
	public static function main() {
	var obj = new ReflectionCost();
	#if reflect
	Reflect.setField( obj, "name", "Jason" );
	Reflect.callMethod( obj, Reflect.field(obj, "printName"), [] );
	Type.getInstanceFields( Type.getClass(obj) );
	#else
	obj.name = "Jason";
	obj.printName();

jasononeil / metrics.txt

Created November 14, 2016 01:18

List of all Sitespeed 4.0 metrics. I couldn't find this list anywhere, and it took me a while to figure out how to generate the file using grunt-sitespeedio (for future reference: set `sitespeedio.default.options.metrics.list=true`). I figure pasting this here will help some other poor souls thanks to the SEO goodness.

	browsertime.pageSummary.browserScripts.0.pageinfo.documentHeight
	browsertime.pageSummary.browserScripts.0.pageinfo.documentWidth
	browsertime.pageSummary.browserScripts.0.pageinfo.responsive
	browsertime.pageSummary.browserScripts.0.timings.firstPaint
	browsertime.pageSummary.browserScripts.0.timings.fullyLoaded
	browsertime.pageSummary.browserScripts.0.timings.navigationTiming.connectEnd
	browsertime.pageSummary.browserScripts.0.timings.navigationTiming.connectStart
	browsertime.pageSummary.browserScripts.0.timings.navigationTiming.domComplete
	browsertime.pageSummary.browserScripts.0.timings.navigationTiming.domContentLoadedEventEnd
	browsertime.pageSummary.browserScripts.0.timings.navigationTiming.domContentLoadedEventStart

Jason O'Neil jasononeil