calincru

// The expression problem is a new name for an old problem.  The goal is to
// define a datatype by cases, where one can add new cases to the datatype and
// new functions over the datatype, without recompiling existing code, and while
// retaining static type safety (e.g., no casts).
//                                                               (Philip Wadler)

import scala.language.implicitConversions

object ExpressionProblem extends App {

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:

leonderijke

/**
 * SVG Fixer
 *
 * Fixes references to inline SVG elements when the <base> tag is in use.
 * Firefox won't display SVG icons referenced with
 * `<svg><use xlink:href="#id-of-icon-def"></use></svg>` when the <base> tag is on the page.
 *
 * More info:
 * - http://stackoverflow.com/a/18265336/796152
 * - http://www.w3.org/TR/SVG/linking.html