Arturo Torres Sánchez R2D221

DuckInterface

I was playing with new .Net 5 and the Source Generator lately and got an idea that it is possible to add "duck typing" support to C#. I would say it is purely academic(no one will use it in production I hope), but it is fun stuff so I decided to try.

The nuget package with results you can find here

The repository is here: https://github.com/byme8/DuckInterface

Quick notes on a rant

Some examples related to my tweet rant https://twitter.com/dsymetweets/status/1294276915260522496

1. Implicitly discarding information is so 20th Century

In project programming this hit me this week with a bug:

Inspired by elizarov/DeepRecursiveFunction.kt.

Normally, when recursively evaluating the depth of a deep tree, it will result in stack overflow error. But, by using async/await, it keeps its stack on the heap, and evaluates correct result without error.

C#

public static class Program
{

How to close CustomTab

When using CustomTab, it has no close method. To close CustomTab, should use Braodcast and call the activity which opened CustomTab again.

Good Example from Facebook SDK

I have fixed some of codes for essential behavior.

gradle setting

Add a library below.

dependencies {

	using System;
	using System.Runtime.CompilerServices;
	using System.Runtime.InteropServices;

	namespace ParserTest;

	public static class Parser
	{
	[InterpolatedStringHandler]
	[StructLayout(LayoutKind.Auto)]

	using System.Runtime.CompilerServices;
	using static ParsingExtensions;

	string input = "Name: Andrew; Age: 31";

	string? name = null;
	int age = 0;

	if (input.TryParse($"Name: {Placeholder(ref name)}; Age: {Placeholder(ref age)}"))
	{

	<TRACK
	NAME Chart
	PEAKCOL 32559202
	BEAT -1
	AUTOMODE 0
	VOLPAN 0.4316101837015 0 -1 -1 1
	MUTESOLO 0 0 0
	IPHASE 0
	PLAYOFFS 0 1
	ISBUS 1 1

	using System;
	using System.Collections.Concurrent;
	using System.Collections.Generic;
	using System.Runtime.CompilerServices;

	namespace WeakMap
	{
	/// <summary>
	/// Allows to link additional properties to any objects by weakly linking a dictionary for any object.
	/// Weakly means the dictionary exists in memory only as long as object it linked to is still stored in memory

	#!/usr/bin/env python3
	#
	# Test script to convert between xtilt/ytilt (Qt, Windows) and azimuth/altitude (iOS)
	# Free to use for any purpose

	import math
	import secrets

	# [azimuthRad, altitudeRad] => [tiltXrad, tiltYrad]
	# azimuth in [0, 2*pi] range, altitude in [0, pi/2]

	setTimeout(function() {
	function getAllModules() {
	return new Promise((resolve) => {
	const id = _.uniqueId("fakeModule_");
	window["webpackJsonp"](
	[],
	{
	[id]: function(module, exports, __webpack_require__) {
	resolve(__webpack_require__.c);
	}