Catch vs replaceError in Combine
There are several ways to handle errors in Combine. Most commonly you will either use catch or replaceError if you want to implement a mechanism that allows you to recover from an error. For example, Read more…
Retrying a network request with a delay in Combine
Combine comes with a handy retry operator that allows developers to retry an operation that failed. This is most typically used to retry a failed network request. As soon as the network request fails, the Read more…
Reclaim disk space by deleting old iOS simulators and Device Support files
After using a MacBook that runs Xcode for a few years it's likely that your disk space is starting to fill up good. A large part of this disk space can be occupied by Device Read more…
Throttle network speeds for a specific host in Charles
Sometimes you'll want to test whether your app works properly under poor networking conditions. One way to test this is Apple's Network Link Conditioner. Unfortunately, this will slow internet speeds for your entire machine to Read more…
How to have more than one type of cell in a Collection View
Collection views in iOS are awesome. You can use them to build complex custom layouts and since iOS 13 you can use Compositional Layouts to quickly build good looking layouts that would take forever to Read more…
Understanding type erasure in Swift
Swift's type system is (mostly) fantastic. Its tight constraints and flexible generics allow developers to express complicated concepts in an extremely safe manner because the Swift compiler will detect and flag any inconsistencies within the Read more…