Subverting the software interview (2021)

Probably didn't pass the interview. The implementation was rather simplistic and low quality.

Here's a better enterprise version: https://github.com/EnterpriseQualityCoding/FizzBuzzEnterpris...

Though the fact that it was written some years ago might be a weakness. Some interviewers might prefere a more modern, distributed solution.

I'm smiling as I read from top to bottom.

Everything makes sense to me until the Dual definitions:

  newtype Dual a = Dual {getDual :: a}
  instance Semigroup s => Dual s where
    (Dual a  Dual b) = Dual (b  a)
  instance Monoid m => Dual m where
    mempty = Dual (mempty)

These are declaring instances of Dual, but they are providing method definitions for Semigroup and Monoid as if they were declaring instances for those types. I plugged this into ghc and I couldn't get this to compile either way. This isn't using an extension or some more obscure language than haskell is it?

I worked with a guy who implemented map and reduce in C++ as a subtask of some other task. It was, of course, a header-only templated monstrosity.

He called it "fun.hpp".

"Fun" times, indeed, working with him.