Design section #36
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Design section #36
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nomisRev
approved these changes
Feb 24, 2023
content/learn/design/contexts-f.md
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| The signature of `traverse` shows another important part of the monadic style of effects, namely _higher-kinded types_. Since monads are types which take other types as parameters -- like `Option` or `Result` --, to provide utility functions that work over different monads one must have a way to refer to those types. In Scala this is made explicit by the number of underscores after the type name, like `F[_]` above; in Haskell this is not made explicit in the signature, but is still checked by the compiler. Even after decades from their inception, higher-kinded types are still considered an advanced feature, and haven't made their way into mainstream programming languages. | ||
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| The reason why Kotlin doesn't require higher-kinded types to provide similar abstraction is that the same functions which work over "regular" functions, like `map`, keep working when used in the coroutine world. Kotlin language designers have found, in my opinion, a great point in the design space, in which they can offer the same abilities but without the cost of such a complex feature. |
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Should we insert a small example here?
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This PR brings a few articles published (or under publication) from 47's blog into a section about general design. The original sources are credited.
Note: @nomisRev's article about domain modeling was updated to talk about
value classinstead ofinline class.