# inline-option An implementation of an `Option` type in Kotlin using the `inline class` feature. See https://kotlinlang.org/docs/reference/inline-classes.html It’s just a small proof of concept sparked by the discussion on the arrow-kt issue tracker after they decided to deprecate `Option` because nullable types are more efficient. It’s just a single file, so I decided to omit the usual gradle bloat, Build and test via: ```sh $ kotlinc-native Option.kt OptionTest.kt $ ./program.kexe ``` The implementation uses an empty value placeholder to allow for nullable types (i.e. `Option`). I don’t think those are ever a good idea to have, but I saw no reason not to support them.