top | item 43969762

(no title)

Munksgaard | 9 months ago

Erlang/Elixir are certainly strongly typed[0] but they are not statically typed[1].

0: https://en.wikipedia.org/wiki/Strong_and_weak_typing

1: https://en.wikipedia.org/wiki/Type_system#Static_type_checki...

discuss

order

lolinder|9 months ago

You can't really use the word "certainly" when speaking about "strongly typed" because the entire concept is fuzzy and subjective. From the article you linked:

> > However, there is no precise technical definition of what the terms mean and different authors disagree about the implied meaning of the terms and the relative rankings of the "strength" of the type systems of mainstream programming languages. For this reason, writers who wish to write unambiguously about type systems often eschew the terms "strong typing" and "weak typing" in favor of specific expressions such as "type safety".

I personally think the whole concept of "strongly typed", which is usually used as a prop to make dynamic languages count as part of the cool kids typed-languages club, should be ditched as a point of argument. The supposed "weakly typed" languages people are usually comparing to (like C) aren't actually framed as viable alternative for problems dynamic languages are suited for, so they're something of a straw man. I'd like to see advocates for dynamically typed languages ditch the obsession with having types like the cool kids and instead focus on showing why dynamism is valuable.

There are plenty of great cases to make for dynamism without having to argue on rhetorical ground that the static languages defined and dominate.

Munksgaard|9 months ago

I agree that the terminology is not ideal, but think there's a huge difference between JS' "weak types", i.e. abundant implicit conversions, and e.g. Elixirs "strong types", where `1 + "foo"` is a runtime error. I don't care if we call the latter something else though. Any good suggestions?

That said, I prefer having both strong and static typing, but that's another argument.