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kotlinlang

What are the conventions about file’s naming?

I use upper-case if the file is representative of a class, so the name reflect the class’s name:
*MyRequest.kt*
```
sealed class MyRequest
class MySyncRequest
class MyAsyncRequest
```

But I use lower case when the file contains generic elements that can not be represented by a single class:
*requestExtensions.kt*
```
fun MyRequest.doSomething() = ...
fun MyRequest.doSomethingOther() = ...
```

why not use uppercase for all file names?

Because packages are lowercase, packages are containers. A file like this is nothing more than a container :slightly_smiling_face:

For instance, on Java you would have a package `exceptions` with a bunch of very small files. In Kotlin I use the file `exceptions.kt` with a bunch of very small classes