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kotlinnaming-conventionsnamingkotlin-extension

What is naming convention for a file with Kotlin extensions?

I have generated class MyDto and I want to add couple of new functions

fun MyDto.convert(foo: String): Bar {...

I have no choice - I have to put it to different file but in contrast to java it won't be a class but just a Kotlin file.

How should I call it ?

MyDtoUtils.kt or myDtoUtils.kt ?

Is there any convention for that ?

Solution

  • As written in the Coding conventions from kotlinlang.org

    If a file contains multiple classes, or only top-level declarations, choose a name describing what the file contains, and name the file accordingly. Use an upper camel case with an uppercase first letter (also known as Pascal case), for example, ProcessDeclarations.kt.

    So from that, I think you should go with MyDtoUtils.kt