Cássio Ribeiro ziglee

Why I hate TypeScript

Warning: These views are highly oppinated and might have some slightly incorrect facts. My experience with typescript was about 2 weeks in Node and a week in angular2.

Not Standard

TypeScript is implementing their own take on JavaScript. Some of the things they are writing will likely never make it in an official ES* spec either.

Technologies that have competing spec / community driven development have a history of failing; take: Flash, SilverLight, CoffeeScript, the list goes on. If you have a large code base, picking TypeScript is something your going to be living with for a long time. I can take a bet in 3 years JavaScript will still be around without a doubt.

Its also worth noting that they have built some things like module system and as soon as the spec came out they ditched it and started using that. Have fun updating!

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store

Terminology

View: Also called a "template", a file that contains markup (like HTML) and optionally additional instructions on how to generate snippets of HTML, such as text interpolation, loops, conditionals, includes, and so on.
View engine: Also called a "template library" or "templater", ie. a library that implements view functionality, and potentially also a custom language for specifying it (like Pug does).
HTML templater: A template library that's designed specifically for generating HTML. It understands document structure and thus can provide useful advanced tools like mixins, as well as more secure output escaping (since it can determine the right escaping approach from the context in which a value is used), but it also means that the templater is not useful for anything other than HTML.
String-based templater: A template library that implements templating logic, but that has no understanding of the content it is generating - it simply concatenates together strings, potenti

	public class DocumentUtil {

	// CPF
	private static final int[] WEIGHT_SSN = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2};

	// CNPJ
	private static final int[] WEIGHT_TFN = {6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2};

	private static int sum(int[] weight, char[] numbers, int length) {
	if (length <= 0) return 0;

	while true
	# ...
	faça um comentário no cartão com link para o PR
	mova o cartão para a coluna `PR Ready`
	while ninguém revisou seu código
	notifique
	end
	while seu PR não foi aprovado
	tire_duvidas
	while você não está satisfeito com o seu trabalho


	// No Security

	{
	"rules": {
	".read": true,
	".write": true
	}
	}

	/**
	* Used as a wrapper for data that is exposed via a LiveData that represents an event.
	*/
	open class Event<out T>(private val content: T) {

	var hasBeenHandled = false
	private set // Allow external read but not write

	/**
	* Returns the content and prevents its use again.

	/**
	* An [Observer] for [Event]s, simplifying the pattern of checking if the [Event]'s content has
	* already been handled.
	*
	* [onEventUnhandledContent] is only called if the [Event]'s contents has not been handled.
	*/
	class EventObserver<T>(private val onEventUnhandledContent: (T) -> Unit) : Observer<Event<T>> {
	override fun onChanged(event: Event<T>?) {
	event?.getContentIfNotHandled()?.let { value ->
	onEventUnhandledContent(value)

	import androidx.compose.foundation.BorderStroke

	/*
	* Copyright 2020 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0

	import StringUtils.encodeHex
	import java.io.File
	import java.io.FileInputStream
	import java.io.InputStream
	import java.security.MessageDigest

	object HashUtils {

	const val STREAM_BUFFER_LENGTH = 1024