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kotlinlang

Hello! How can i force compiler to restrict 'when' expression if not all branches specified and it is not returning or assigning?

<https://youtrack.jetbrains.com/issue/KT-12380>

There’s no automatic way, but there is a small library available which lets you annotate when-expressions that should be exhaustive <https://github.com/cashapp/exhaustive>. The README also lists a few alternatives to the compiler plugin (which are probably all easier/more stable to use than the actual library) <https://github.com/cashapp/exhaustive#alternatives-considered>

for now, I find
```when (...) {
    ...
}.let { /* exhaustive */ }```
to be the simplest workaround

I'd like for `val _ =` to work like I write in other languages, and I always end up trying it in Kotlin, but it doesn't work... oops

Just make it a face that watches you are exhaustive :slightly_smiling_face:
```val `_` = ```

The solution with let is good for me. Thanks!