I can’t speak for the language designers, but from what I can reason on, it seems like it was intentional, proper design decision. Looking at this basic F# code, you can compile this into a working library. This is legal code for F#, and only overloads the equality operator, not the inequality: module Module1 type … Read more
This question is, to some degree, related to What is the reason why “synchronized” is not allowed in Java 8 interface methods? The key thing to understand about default methods is that the primary design goal is interface evolution, not “turn interfaces into (mediocre) traits”. While there’s some overlap between the two, and we tried … Read more
This is from an interview with Gosling and others, about simplicity: Gosling: For me as a language designer, which I don’t really count myself as these days, what “simple” really ended up meaning was could I expect J. Random Developer to hold the spec in his head. That definition says that, for instance, Java isn’t … Read more
Actually, this is not a design flaw, and it is not because of internals or performance. It comes simply from the fact that functions in Python are first-class objects, and not only a piece of code. As soon as you think of it this way, then it completely makes sense: a function is an object … Read more