From 86ee5d694e8952e146438051fc599e24599d1cc3 Mon Sep 17 00:00:00 2001 From: Sean Chalmers Date: Mon, 12 Feb 2018 10:20:59 +1000 Subject: [PATCH] Fixes #20 - Add note to Instructor Notes for composed fmap --- INSTRUCTOR_NOTES.md | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/INSTRUCTOR_NOTES.md b/INSTRUCTOR_NOTES.md index 2a0ac744..0e77300d 100644 --- a/INSTRUCTOR_NOTES.md +++ b/INSTRUCTOR_NOTES.md @@ -89,6 +89,13 @@ But that's about it. Exceptions will be discussed when working on the 'readObject' function to load the file into a JSON Value. +Mention and work through the type signature of: + +- ``fmap . fmap`` + +Students start to encounter multiple ``Functor`` layers around this level and +this technique comes in handy. + # Level 6 This is "The ReaderT" level.