ruiper.es

Thoughts on Cross-platform

I am convinced that cross-platform is the future for frontend. I don’t want to work separately from the Android team, or even web. There’s this strange disconnect that I honestly hate. It feels like a different company, even when working within the

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iOS

A half-hour to learn ReactiveSwift

Note: Inspired by A half-hour to learn Rust by fasterthanlime. ❤️ ReactiveSwift, and other FRP libraries, can take months to learn. In this post, we will cover the most important entities, operators and techniques. By the end, you should feel comfortable using, reading and understanding

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Swift

Bool?

For some time now, I have been accumulating a bitterness about APIs returning optional booleans. Such disdain has been kept to myself. Until last week. You wouldn't. By returning an Optional<Bool>, you are putting the burden of picking a

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Frontend Cross platform

A week ago I opened a poll on Twitter: If your company decided to stop with native mobile development. What would be a good compromise? #poll — Rui Peres (@peres) January 25, 2020 Today, I would like to discuss these number and what adopting

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Twitter social contract in 2020

As I get older, I am starting to value other things besides technology and outside iOS. Moreover, I prefer, and consciously want, to spend less time using Twitter. In parallel and in a a selfish way, I want to extract as much knowledge as

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Running tips

Note: I have been running since 2016. I accumulated a total of 5,293.6 km. Most of my training is on road by circumstance, while my long runs are done in trail. Bellow are some tips I wish I had received when I

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Software Development

Pick your poison

Software development is not much more than a series of compromises.

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Combine

Custom Publishers - Part 2

On the first part of these series, we explored how one can create a Publisher from scratch. This Publisher wasn't particularly interesting, but it gave a good idea on how a Publisher and a Subscription work together On this second part, you will create

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Swift

Custom Publishers - Part 1

If you have been playing around with Swift's Combine you probably reached a point where you need to create your own custom Publisher. Besides the implementation details, I will do my best to share my thought process when doing it. A lot of help

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SwiftUI

Understanding the SwiftUI Sample

With the release of SwiftUI, unless you have been paying attention to Swift Evolution, you might have been caught off guard by some of the new features introduced in Swift. In this post, I will start by showing a small snippet of code using

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iOS

SwiftUI and Combine

SwiftUI and Combine are the beginning of something new to most iOS developers. More so than it was five years ago with the release of Swift. While it's feasible to do Swift with an Objective-C mindset, I am afraid that interacting with SwiftUI the

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Management

On being an Engineering Manager (2018)

In this post, I will share what I learned and the challenges I faced, at Babylon Health as an Engineering Manager, as we continuously grow both as a company and as a team: Nowadays I am more balanced between delivering value to the end-user

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Management

Career choices

I started working right after university, in August 2010. My degree in particular, Computer Science, was quite pragmatic and had a decent focus in technologies being used in the Portuguese market: Java and C#/.Net. This meant that it would be easy to find

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human_skills

Meetings approach

I have always been a direct person and, at times, blunt in my approach. This has lead to some entertaining meetings (to some), where I would simply say no at someone's idea, feature or even roadmap. I would like to point that's not because

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Swift

Memoization

This post comes from this tweet shared by David Rodrigues (if you don't follow him on Twitter you should): If you have a closure that needs some internal state to be used and modified between executions of the closure you can declare your state