loading...
Donny Wals profile picture

Donny Wals

I’m a curious, passionate iOS Developer from the Netherlands who loves learning, sharing knowledge and programming.

Location Amsterdam, The Netherlands Joined Joined on  Twitter logo External link icon
Work

iOS Engineer at Disney Streaming Services

Formatting dates in the user's locale using DateFormatter in Swift

Reactions 5
2 min read

I wrote a book about Apple's Combine framework

Reactions 10
1 min read

Reading and writing Property List files with Codable in Swift

Reactions 6 Comments 6
4 min read

How to sort an Array based on a property of an element in Swift

Reactions 5
2 min read

Working with throwing functions in Swift

Reactions 7
8 min read

Testing push notifications in the Simulator with Xcode 11.4

Reactions 8
3 min read

Five ways to get better at receiving feedback

Reactions 19 Comments 2
6 min read

Five tips to ask better questions

Reactions 50 Comments 3
6 min read

Five tips to write better todos

Reactions 70 Comments 11
4 min read

Getting ready to publish your app on the App Store

Reactions 11
9 min read

Using compositional collection view layouts in iOS 13

Reactions 6
11 min read

Modern table views with diffable data sources

Reactions 7
9 min read

Loose coupling and the law of Demeter

Reactions 8
6 min read

Sequencing tasks with DispatchGroup

Reactions 7
6 min read

Breaking an app up into modules

Reactions 6
12 min read

Responsibly crashing your apps

Reactions 8
8 min read

Testing your push notifications without a third party service

Reactions 11
7 min read

Scheduling daily notifications on iOS using Calendar and DateComponents

Reactions 6
6 min read

Measuring performance with os_signpost

Reactions 7
6 min read

Using Xcode's memory graph to find memory leaks

Reactions 10 Comments 3
5 min read

Finding slow code with Instruments

Reactions 12
5 min read

Effectively using static and class methods and properties

Reactions 6
8 min read

Understanding opaque return types in Swift 5.1

Reactions 5
8 min read

An introduction to generics in Swift using its built-in types

Reactions 8
7 min read

Efficiently loading images in table views and collection views

Reactions 6
8 min read

Changes to location access in iOS 13

Reactions 6
6 min read

Using launch arguments for easier Core Data debugging

Reactions 7
4 min read

Adding Haptics to your app

Reactions 7
9 min read

Deciding where to store data

Reactions 7 Comments 2
7 min read

Announcing: Advent of Swift

Reactions 4 Comments 2
1 min read

Updating your apps with silent push notifications

Reactions 5
4 min read

Real time data exchange using web sockets in iOS 13

Reactions 7
10 min read

Configuring projects with xcconfig

Reactions 6 Comments 1
3 min read

Building flexible components with generics and protocols

Reactions 7
11 min read

Add iOS 12 support to a new Xcode 11 Project

Reactions 7 Comments 3
4 min read
loading...