Show layout bounds from command line
Lately I found myself clicking through Android Settings menu to enable and disable “Show layout bounds” to check if views are where are supposed to be a bit too often. Using the menu once is OK. Using the menu twice is still OK. I live by the Rule of three so when I hit the […]
Diventa un Android Dev
Dal 1 febbraio 2021, in collaborazione con CGM Consulting, partirà il mio corso di programmazione Android destinato a tutti coloro che si stanno avvicinando al mondo della programmazione mobile: https://bit.ly/corso-android-ivan-morgillo Anche se sei già un dev, c’è sempre la possibilità di aiutare qualche amico o amica interessati ad una carriera come Android Dev 😉 Il […]
D’oh!! There is no copy method for Sealed Classes in Kotlin!
A few weeks ago we looked at one of my pain points of working with Kotlin Data Classes: nested copy and we improved on a basic Kotlin solution using a Lens. Today we look at another type of nesting: Sealed Classes nesting. When we wanted to create some sort of restricted hierarchy in Java we […]
How to fix the pain of modifying Kotlin nested data classes
When Kotlin arrived a few years ago one of the selling points was immutability: In object-oriented and functional programming, an immutable object (unchangeable object) is an object whose state cannot be modified after it is created. https://en.wikipedia.org/wiki/Immutable_object This is very cool! Value objects are such a huge help when it comes to reasoning about code, safety and avoiding weird subtle misbehaviours due to “things […]
Uninstall and Run in one shot in Android Studio
As an Android developer, I live my life one repetitive task after another: Clean, Run Uninstall, Run Restart Clean, Restart Restart with Debugger Click here, click there. Tap on the phone. Open menu. Tap menu. It never ends. Plug-in to the rescue To ease up the pain, we developers tend to create tools and one […]
Can I loop over a Kotlin Sealed Class?
As an Android developer, I constantly write API clients: 90% of all mobile apps fetch some JSON, parse it and show it in a list ¯\_(ツ)_/¯ To keep a clear separation between what’s coming from the network and what I want in my domain, I usually have a DTO and a Domain Model. DTO and […]
Push vs Pull: air conditioning system
By Ivan Morgillo, Sasa Sekulic and Fabrizio Chignoli This article has been excerpted from Grokking ReactiveX. After a life of imperative programming, switching to a reactive mindset could seem challenging: “Why should I give up all the control and bend to this <data are in control> thing?” Let’s look at it in an everyday life scenario: […]