Ask HN: Has anyone here programmed in Kotlin? What do you think about it?

Re:Ask HN: Has anyone here programmed in Kotlin? What do you... by mplatvoet on Sunday July 26, 2015 @06:20AM (#9950672)

The question is, why should this be part of the language or standard library? This can easily be achieved by a library.

The Kotlin type system does help though/is essential to correctly implement Option types where other languages like C# can not.

The essential part is you can/should define an Option type with a non-null upper bound. Otherwise you would have a Some() that still might contain a null value. So the side affect of solving NPEs you speak of is only there if a language actually supports non-null upper bounds.

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Re:Ask HN: Has anyone here programmed in Kotlin? What do you... by CookieCutter2 on Sunday July 26, 2015 @01:42PM (#9951670)

Without proper Option deconstruction and map()/flatMap() syntacic sugar Option code beside map() is not very pleasent to read or understand to my eyes :-(

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