On: It never makes sense to use foldl on lists in Hask...

[dnautics]

It's also true in other languages. Erlang's foldr specifically annotates this in the documentation.

[masklinn → dnautics]

Erlang's foldr says exactly the opposite though, because Erlang is an eager language:

> foldl/3 is tail recursive and is usually preferred to foldr/3.

[dnautics → masklinn]

oh jeez I totally missed that. Thanks!

[Dylan16807 → dnautics]

The advantages to foldr in certain situations are very cross-language.

But foldl vs. foldl' is more about a badly-optimized implementation detail than anything else. It's very fair to qualify it as "in Haskell".