I'm also getting this error but i DO have RankNTypes enabled..

I see. RankNTypes should be made available for TupleSections to work. The above error will occur when {-# LANGUAGE RankNTypes #-} is missing. Sorry for the stupid question.

How to avoid the following error on the test case Cannot use Control.Lens? I did not import anything that relates to Control.Lens.

uncaught exception: IOException of type UserError
user error (Could not parse solution correctly)

A bijection is an isomorphism in the category of sets, meaning that it is just an invertible one-to-one mapping between two sets.Many categories can be thought of as sets with additional structure (e.g. groups, rings, differentiable functions etc.) and an isomorphism requires the structure of the category to be preserved. For example if you are mapping in the category of groups, then you need to map the identity element of the first group to the identity of the second group and you need to preserve the group law so that f(a*b) = f(a).f(b) where * is the group operation of the first group and . is the operation in the second group.

The fact that there is a hint in the instructions to look at the wikipedia page for a bijection rather than the category theory definition of an isomorphism is actually a fairly subtle clue how to solve one of the parts of the kata which can only be solved by possibly breaking the isomorphism structure.

I don't think the current syntax supports passing functions as arguments and calling them inside a function. 🤔

Which one is required now? 4 (2+avg 10 30) = 13.0 or (avg 4 2) + (avg 10 30) = 23.0? Thanks really.

After skimming the other discourses I found that this problem would very possibly not be tested ;)

Suppose

fn apply f x => f x
fn incr x => x + 1

Since function calls are right associative, then how can we parse apply incr 1 into apply incr 1 but not apply (incr 1)?

Do not modify the nested list in your implementation or you won't pass the test ;)

@WinterShiver What do you mean by that? Not sure I understand the statement.

Working on Scala
When I am sending a code like def interpret(input: String): Option[String] =None or like smth in answer ut's working perfectly well and do compilation, but when I send my code with some realised functions, that works well on my computer - it sends an error message:
Test Suite Aborted
Exception encountered when invoking run on a nested suite - Unable to load a Suite class that was discovered in the runpath: SampleAssemblerInterpreterSuite

What is it?

This kata may be more interesting if parameter passing is required. 2333

The standard of register names is not clarified in detail.
In Assembler interpreter (part I), they are described as re alphabetical (letters only). But actually in this kata, to pass the tests, you should allow register names to begin with _/letters and follow by _/letters/numbers, like most common identifiers.

Maybe Data.Map with zipped list?

Data.HashMap is not supported by the Haskell compiler. Could I use something instead?