In this lecture we look at the concept of maps in Python, PHP, C++, and Java in order to better understand abstraction, interfaces, and the separation of interface and implementation.
For more details and a set of exercises please visit https://www.cc4e.com
For the full curriculum, see https://online.dr-chuck.com/
Dr. Chuck's Hoodie in this lecture is from the Electronic Freedom Foundation which you get by sending in a donation at https://supporters.eff.org/donate
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