Alan Kay on the Meaning of “Object-Oriented Programming” (2003)

Re:Alan Kay on the Meaning of “Object-Oriented Programming” ... by hota_mazi on Monday March 18, 2019 @07:28PM (#19426401)

Clearly, you haven't even bothered to read up about Kotlin.

    (a == 1).ifTrue {
      // ...
    }.else {
      // ...
    }

is standard Kotlin with its DSL syntax.

`ifTrue` and `else` are extension methods added to the `Boolean` type.

You know that there have been new developments in PLT since Smalltalk, right?

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Re:Alan Kay on the Meaning of “Object-Oriented Programming” ... by gambler on Tuesday March 19, 2019 @01:04PM (#19432821)

>`ifTrue` and `else` are extension methods added to the `Boolean` type.

You don't seem to understand what this discussion is about. Extension functions in Kotlin are statically dispatched, so while they are a nice feature, they are completely irrelevant here.

It's not about how your invocation code looks like. The important part is that at some point the code needs to make a decision whether to invoke "if" case or "else" case. Smalltalk achieves this by having two objects/classes (True and False) that handle the same message differently. The implementation of those objects does not have a hidden control flow statement. Your code would.

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