Pattern Matching a Function Body: Lists June 22, 2019 You cannot view this unit as you're not logged in yet. Go to Account to login. 6 Comments romenigld on December 14, 2020 at 10:58 am I like the exercises. I just notice the exact number for run the tests. They aren’t running in the beginning of each tests. Exercise #1: mix test test/lists_test.exs:22 Exercise #2: mix test test/lists_test.exs:32 and the so on…. Log in to Reply Mark Ericksen on March 13, 2021 at 6:43 pm Right! You just pick a line that’s inside the test. I like to pick something around the middle so if I add or delete lines, the correct test is still run. Log in to Reply Uzo Enudi on March 13, 2021 at 11:24 am Solution: def sum_pair([first, second]), do: first + second My solution: def sum_pair([first, second | ]), do: first + second Some overthinking went in there 🙂 Log in to Reply Mark Ericksen on March 13, 2021 at 6:43 pm But hey! It works! 🙂 Log in to Reply Maksym Kosenko on December 8, 2021 at 12:25 pm For exercise 1 this only one function covers all tests: def is_empty?(something), do: something ==  I don’t know if it fits the philosophy of Elixir Log in to Reply Mark Ericksen on December 8, 2021 at 12:38 pm Ha! Yes, that works. This is more about practicing applying pattern matching in function headers. In case it wasn’t already known, you could use Enum.empty?(something) instead of writing a custom function at all! So, it’s really just about practice. 🙂 Log in to Reply Leave a Comment Cancel ReplyYou must be logged in to post a comment.