evadne

How to Sell Elixir AGAIN (2023)

Presented by Evadne Wu at Code BEAM Lite in Stockholm, Sweden on 12 May 2023

Synopsis

We have celebrated 10 years of Elixir and also nearly 25 years of Erlang since the open source release in December 1998.

Most of the libraries that were needed to make the ecosystem viable have been built, talks given, books written, conferences held and training sessions provided. A new generation of companies have been built on top of the Elixir / Erlang ecosystem. In all measures, we have achieved further reach and maturity than 5 years ago.

mcxiaoke

package emu.grasscutter.net.packet;

import java.util.HashSet;

public class PacketOpcodes {
  // Empty
  public static final int NONE = 0;

  // Opcodes
  public static final int AbilityChangeNotify = 1155;

iMilnb

Rationale

This snippet is a sample showing how to implement CloudWatch Logs streaming to ElasticSearch using terraform. I wrote this gist because I didn't found a clear, end-to-end example on how to achieve this task. In particular, I understood the resource "aws_lambda_permission" "cloudwatch_allow" part by reading a couple of bug reports plus this stackoverflow post.

The js file is actually the Lambda function automatically created by AWS when creating this pipeline through the web console. I only added a endpoint variable handling so it is configurable from terraform.

kosamari

ServiceWorker for github pages

This is a ServiceWorker template to turn small github pages into offline ready app.

Why ?

Whenever I make small tools & toys, I create github repo and make a demo page using github pages (like this one).
Often these "apps" are just an index.html file with all the nessesary CSS and JavaScript in it (or maybe 2-3 html/css/js files). I wanted to cache these files so that I can access my tools offline as well.

Notes

Make sure your github pages have HTTPS enforced, you can check Settings > GitHub Pages > Enforce HTTPS of your repository.

irokhes

clock = sinon.useFakeTimers(new Date(2016,11,1).getTime());
new Date(); //=> return the fake Date 'Sat Nov 01 2016 00:00:00'

clock.restore();
new Date(); //=> will return the real time again (now)

TarasOsiris

public static void ShowToast(string text)
{
	if (Application.platform == RuntimePlatform.Android)
	{
		AndroidJavaClass unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
		AndroidJavaObject activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity");

		activity.Call("runOnUiThread", new AndroidJavaRunnable(
		  ()=> 
		  {

mrdoob

/**
 * @author mrdoob / http://mrdoob.com/
 */

function html2canvas( element ) {

	var range = document.createRange();

	function getRect( rect ) {

mandarinx

Unity3D optimization tips

Some code allocates memory when running in the editor and not on the device. This is due to Unity doing some extra error handling so possible error messages can be output in the console. Much of this code is stripped during build. It's therefore important to profile on device, and do it regularly.

Optimizations often makes code more rigid and harder to reason. Don't do it until you really need to.

When profiling, wrap methods or portions of a method in Profiler.BeginSample(string name) and Profiler.EndSample() to make them easier to find in the profiler.

public class SomeClass {

tsubaki

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.Assertions;
using System;

public class SkinnedMeshUpdater : MonoBehaviour
{
	[SerializeField]
	SkinnedMeshRenderer original;

macintux

This is not intended to be comprehensive or authoritative, just free online resources I've found valuable while learning more about Erlang.

Similar lists

• 0xAX's list of Erlang bookmarks
• Federico Carrone, Erlang Spawned Shelter
• Ivan Uemlianin's list of resources on various BEAM languages
• David Robakowski's curated list of awesome Erlang libraries, resources and shiny things
• Julius Beckmann's curated list of amazingly awesome Elixir and Erlang libraries, resources and shiny things

Instruction