tonisivesAfter 4 years of Kotlin experience, one of the confusing parts still are the constructors. It appears like every time they seem figured out, you still find yourself googling for a solution in the next project. Compared to Java’s relatively straightforward definitions, Kotlin constructors are like Hydra’s heads. After understanding one concept about them, another […]
Java crypto is like an architect building a house. Architect only knows how to design a house, but needs a construction company to actually build it. In Java, only crypto interface is defined, and a provider is required to actually implement the methods. There are different providers, but one has stood out in the test […]
When developing with any platform, the existence of libraries is assumed. This is to delegate common tasks to out project code, in order to reduce development time and avoid common pitfalls already solved by other developers. Kotlin Multiplatform(KMM) is no different. Available libraries Since Kotlin is becoming more popular among Android/JVM developers, one might expect […]
Overview Kotlin Multiplatform Mobile(KMM) is a new feature from Jetbrains. It is an alpha feature but can already be used to create and publish apps for both iOS and Android. It is possible to write business (network and database) logic in Kotlin, and share this code between iOS and Android. ⛩Architecture Kotlin code compiles into […]
Kotlin serialization is a great library for serialisation in Kotlin. It is mainly geared towards serialising from objects to strings and back, but on closer look it also contains a comprehensive Json library. Even after discovering the documentation, though, the use of this new library might be confusing. 🕋 Serialisation to objects Consider a data […]
Update I created a MacOS app that uploads PlantUML code to Notion. Check it out PlantUML to Notion uploader In order to express their ideas about a project’s architecture, developers can utilise the UML sequence diagrams. There are different ways to create and publish these diagrams, ranging from paid apps(8$/month, 100$) to free Confluence apps. […]
For asynchronous tasks, the actions on completion need to be handled via a callback. There are different patterns to achieve this, with each having their own benefits and shortcomings. Interfaces One of the oldest callback styles are interfaces or anonymous classes. They are used to great effect in Android. As an example, with okhttp library, […]
It can be useful to emit logs in a library. When doing so, one needs to consider when to emit, how to filter and who is responsible for printing/handling the logs. Correct logging should also be tested. When to log There are different reasons to emit a message, for instance on important events, undefined behaviour […]
A null String is concatenated as “null” in Kotlin: What if the goal is to concatenate only if the second string is not null? There are a few options: if-else One of the solutions would be to check the null value with elvis(?:) operator: Now there is no “null”, but the whole “and second is” […]
Some of the smaller, repetitive tasks as a programmer can be automated and by doing so productivity improved and frustrations reduced. I am talking about tasks like moving the cursor, writing keystrokes and manipulating text and apps. My purpose is to use the trackpad less and keyboard more. By doing so you can focus more […]