Assume we want to map the payload of an HTTP response to an object and handle the error cases properly.įun parseProduct ( response : Response ?) = when ( response ?. However, using Java, it’s sometimes tough to write small and expressive functions. It’s still up to the developer to create small functions. Can Kotlin help here? No, because these rules are language-agnostic. Moreover, we should separate details from the main logic. We should extract subroutines and give them descriptive names.

Rule 2: Functions should be smaller than that!”Īccording to clean code, functions should be small and they should do only one thing. Afterward, I’ll talk about some restrictions and pitfalls. Let’s start with the items where I definitely see an improvement by using Kotlin. We’ll find out where Kotlin can help us to write clean code and where not. Let’s consider some rules and recommendations of Robert C. What is clean code? Clean Code and Kotlin We are also facing clean code when it comes with minimal ceremony and syntactic noise. We can achieve this by making our code concise, short, simple and expressive. The code should be readable and intuitive. First and foremost, clean code is code that is easy to understand. Recap: What is Clean Code?īefore we start, it’s important to recap what clean code is. This post bases on my talk “ Cleaner Code With Kotlin” (German) which I’ve given at the Clean Code Days in Munich in June 2017. At the end, I discuss if Kotlin leads to “a dark or a bright path”.

Moreover, I show restrictions and points, where we should be careful.

Sounds like clean code, doesn’t it? In this post, I go through some recommendations and principles of clean code and consider if Kotlin can help to fulfill this rules or not. With Kotlin we can write code that is easy to understand, short, expressive and safe.

Popular Java Idioms and Patterns are Built-in.

Flow Control Structures Are Expressions.

Java Ecosystem, Kotlin, Engineering Management, Sociology of Software Development Clean Code with Kotlin

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