This content was released on Aug 11 2020. The official support period is 6-months from this date.
Find out what Liskov's Substitution is and how to build protocols which conform to it. Then understand the Circle-as-an-Ellipse problem, basic violations of the principle and how to avoid them.
This is a companion discussion topic for the original entry at https://www.kodeco.com/10480721-solid-in-real-world-ios-apps/lessons/3