Earlier quoted context omitted.
It sounds like like you're conflating pure and impure functions. No I'm not, this applies to both in different ways. If we're talking about pure functions, then due to referential transparency, arrays are in fact equivalent to functions Never ever. You're talking about a function that generates data from an index, which is trivial to make. Just because it is possible to disguise it as an array in haskell, C++ or anyt…
Notice that I never once in this discussion claimed that it was a "good idea". This is about research and experimentation. The blog post has the title because of the Haskell documentation. Also, claiming that the lack of an argument is evidence to the contrary is argument from silence, a logical fallacy. The good idea surrounding this isn't about treating functions as data, but maintaining the purity of the type syst…
Haskell is 36 years old. It isn't research and experimentation any more, it is ideas that everyone with experience has had a look at. Some people might be learning haskell for the first time, but that doesn't mean it's still research, that all happened decades ago.
The good idea surrounding this isn't about treating functions as data, but maintaining the purity of the type system allowing the implications of the type system to run their course.
And what are the benefits here? How do they help the things I talked about? How do they avoid the pitfalls?
Also, claiming that the lack of an argument is evidence to the contrary is argument from silence, a logical fallacy.
Not really, because if you could contradict what I've said you would have.
within the framework of type theory and functional programming.
People can gather in a room and tell each other how great they are and how they have all the answers, but in 36 years there is a single email filtering program that was made with haskell.
you're using reasoning that applies only to procedural programming to attempt to prove why an idea in functional programming is bad.
I explained why this is a bad idea from fundamental and universally agreed upon ideas about the best ways to write software.
Functional programing languages had lots of ideas and features that turned out to work well. That doesn't mean that conflating two completely separate concepts is a good idea, no matter what 'type theory' someone comes up with to support it.
Saying something is good because haskell says it is good is circular religious thinking. These two things aren't the same, they are literally two different things and trying to unify them doesn't make life easier for anyone. It's just programming cleverness, like the 'goes to operator --> '