Design Patterns - Factory Method Pattern Explanation and Implementation in C++

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►Lesson Description: In this lesson I teach you about a creational design pattern to have a single point in which you allocate objects at run-time. This is the factory method (or factory function), which takes advantage of inheritance based polymorphism to create the correct object at run-time and return it to the user.

00:00 Factory method and definition
1:25 Goal of the factory method pattern
2:37 Inheritance based polymorphism
3:40 Start of implementation with interface
4:50 Creating derived classes
5:58 Creation of our factory
9:15 Confirming the factory works in GDB
10:50 Refactoring our factory arguments with enum class
14:35 Returning a smart pointer from our factory
16:12 Confirming no memory leaks with valgrind
17:30 Recap of source code and pattern
18:00 Pros and cons of the pattern

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