Saturday evening broadcast this week - 7pm UK time (UTC+1) https://youtu.be/lbTl8MIlOHA This week we will look at 4Clojure challenge 63 and 64. We will start with 64 and look at the reduce function and ensure we understand how the reduce function works. Then we will solve #63 where we implement our own version of the group-by function. This involves writing a reducing function. We will also solve this challenge using a for function and merge-with.