pchiusano

Take-home functional programming interview

This document is licensed CC0.

These are some questions to give a sense of what you know about FP. This is more of a gauge of what you know, it's not necessarily expected that a single person will breeze through all questions. For each question, give your answer if you know it, say how long it took you, and say whether it was 'trivial', 'easy', 'medium', 'hard', or 'I don't know'. Give your answers in Haskell for the questions that involve code.

Please be honest, as the interviewer may do some spot checking with similar questions. It's not going to look good if you report a question as being 'trivial' but a similar question completely stumps you.

Here's a bit more guidance on how to use these labels:

jdegoes

Applied Functional Programming with Scala - Notes

Copyright © 2016-2018 Fantasyland Institute of Learning. All rights reserved.

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

Gabriella439

Awake Security Haskell Livestream

Who

Awake Security will be livestreaming a periodic 1-on-1 teaching session on Twitch. The subject of this session will always be one of our engineers teaching another one of our engineers how to do accomplish a practical task in Haskell while remote attendees watch, comment, and ask questions.

ryanorendorff

let

  pkgs = import (builtins.fetchTarball {
    url =
      "https://github.com/NixOS/nixpkgs-channels/archive/b0bbacb52134a7e731e549f4c0a7a2a39ca6b481.tar.gz";
    sha256 = "15ix4spjpdm6wni28camzjsmhz0gzk3cxhpsk035952plwdxhb67";
  }) { };

  # The standard library in nixpkgs does not come with a *.agda-lib file, so we
  # generate it here.

Gabriella439

{-# LANGUAGE ApplicativeDo     #-}
{-# LANGUAGE OverloadedStrings #-}

module Main where

import Control.Concurrent.Async (Concurrently(..))
import Data.Foldable (traverse_)
import Data.List.NonEmpty (NonEmpty(..))
import Data.Text (Text)
import Foreign.C