In POOD-I, students learn to leverage the principles of object-oriented design (OOD) to minimize the costs of creating new software and mitigate the pain of maintaining existing code. If you prefer to write applications that are pleasant to work on and easy to maintain, or if you desperately need to fix applications that have escaped your control, this course is for you.
Because good OOD integrates testing into refactoring, students learn refactoring techniques that will speed current development, and testing skills that will reduce bugs in future code.
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https://courses.sandimetz.com/courses/poodi