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from parse import parse
import numpy as np

filename = 'input'
filepath = f'data/{filename}.plain'

positions = []
velocities = []

pattern = 'position=<{px},{py}> velocity=<{vx},{vy}>'

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let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)

let url = URL(string: "https://httpbin.org/anything")!
let task = session.dataTask(with: url) { data, response, error in

    // ensure there is no error for this HTTP response
    guard error == nil else {
        print ("error: \(error!)")
        return

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Github: Upgrading from Rails 3.2 to 5.2.

Took a year and a half

Introduction

2018 September

clean up technical debt

improve codebase

How did we do it?

large and trafficked application

Require

• careful planning

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<IfModule mod_ssl.c>
	<VirtualHost _default_:443>
		ServerAdmin ***@***.***
		ServerName woo.local
		ServerAlias www.woo.local
		DocumentRoot  /var/www/woo.local

		# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
		# error, crit, alert, emerg.
		# It is also possible to configure the loglevel for particular

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Flutter course in Udacity

course by Google

main topics

Lesson 1: The Flutter Framework

• Flutter Development Tools

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final _color1 = Colors.red;
final _color2 = Colors.blueGrey[900];
final _color3 = Colors.amberAccent;
final _color4 = Colors.pink.shade50;
//final _color5 = Colors.lightRed;
final _color6 = Colors.transparent;

final _color7 = const Color(0xFF013487);
final _color8 = const Color(0xFF4CD132);
//final _color9 = const Color(0xFF0134GG);

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var str = "Hello, playground"
var strings = [String]()

str.characters.map{strings.append(String($0))}

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Machine Learning at Coursera by Andrew Ng

• Week 1

• Week 2

• Week 3

• Week 4