Evandro Magalhães Leite Júnior evandrojr

🤗

Studying Go

My professional profile combines practical experience as a DEV, academic research, and specialized training in Artificial Intelligence.

evandrojr / counter.dart

Last active July 2, 2020 01:03

Flutter state management. RxDart + BehaviorSubject + Singleton

	import 'package:rxdart/rxdart.dart';

	class Counter {
	Counter._();
	static final _instance = Counter._();
	factory Counter() {
	return _instance;
	}

	BehaviorSubject _counter =

evandrojr / StreamProviderExample.dart

Created July 1, 2020 23:59

StreamProviderExample

	import 'package:flutter/material.dart';
	import 'package:provider/provider.dart';

	void main() => runApp(StreamProviderExample());

	/// *****************************************************
	/// *****************************************************
	/// *****************************************************
	/// Something important to understand here is that there's a
	/// fundamental difference between using this StreamProvider

evandrojr / emails_extractor.cr

Last active August 13, 2018 00:26

Extract all emails from files inside a directory. Writen in Crystal lang

	dir = "msgs/"
	emails = Set(String).new
	errors_count = 0
	msgs = Dir.entries(dir)
	msgs.each { \|msg\|
	next if msg == "." \|\| msg == ".."
	begin
	texto = File.read(dir + msg)
	matches = texto.scan(/[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,64}/)
	p matches[0][0]

evandrojr / ruby.json

Created March 28, 2017 17:50

Debug with pry in VSCODE

	{

	// Place your snippets for Ruby here. Each snippet is defined under a snippet name and has a prefix, body and
	// description. The prefix is what is used to trigger the snippet and the body will be expanded and inserted. Possible variables are:
	// $1, $2 for tab stops, $0 for the final cursor position, and ${1:label}, ${2:another} for placeholders. Placeholders with the
	// same ids are connected.
	// Example:
	"Debug with pry": {
	"prefix": "pry",
	"body": [

evandrojr / mixin.js

Created February 11, 2017 21:37

Mixin example in JS

	// vastly simplified `mixin(..)` example:
	function mixin( sourceObj, targetObj ) {
	for (var key in sourceObj) {
	// only copy if not already present
	if (!(key in targetObj)) {
	targetObj[key] = sourceObj[key];
	}
	}

	return targetObj;

evandrojr / arrow_functions.js

Last active February 11, 2017 21:37

Using arrow functions

	const dragonEvents = [
	{type: 'attack', value: 40, victim: 'dorkman'},
	{type: 'sleep', value: 10},
	{type: 'attack', value: 20, victim: 'aquaman'},
	{type: 'attack', value: 40, victim: 'dorkman'},
	]

	const v = 'dorkman';
	const field = 'victim';
	const selectVictim = (e) => e[field] === v;

evandrojr / monit_noosfero

Last active March 21, 2016 22:07

cat /etc/monit.d/*


	check process npm
	matching "npm"
	start program = "/bin/su designer -lc 'cd /home/designer/angular-theme && npm start' "
	stop program = "/usr/bin/killall -9 npm"
	if cpu usage > 95% for 10 cycles then restart

	# log to monit.log
	set logfile /var/log/monit.log

evandrojr / oo.rb

Created September 2, 2015 18:16

Ruby OO

	class myTask < Task # myTask is a subclass of Task

	end

	module Foo
	def foo
	puts 'heyyyyoooo!'
	end
	end

evandrojr / index.html

Last active August 29, 2015 14:27 — forked from anonymous/index.html

Saúde de Aço // source https://jsbin.com/yuhoze

	<!DOCTYPE html>
	<html ng-app="SaudeDeAco">
	<head>
	<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.js"></script>
	<meta charset="utf-8">
	<title>Saúde de Aço</title>
	</head>
	<body ng-controller="mainCtrl">

	<h3>Semana atual: {{currentWeek}} </h3>