Overview
This lesson introduces the high-level concept of design patterns and explains three design pattern types:
- Creational
- Structural
- Behavioral
You probably already know this secret about programmers: They love reusing stuff. Frameworks, algorithms, classes — they’re all just things that can be used over and over again to solve similar problems. We also have design patterns: problems that are similar in nature but solved a bit differently every time. Let’s explore them.
Prerequisites
- None
Learning Objectives
By the end of this module, learners will be able to:
- Explain why design patterns exist in programming.
- Define creational, structural, and behavioral design patterns.
- Identify the implementation of design patterns in programming.
Content
There are two components to this module:
- Lesson: Design Patterns
- Partner Exercise: Discussing Design Patterns
Time to Complete
40 min total:
- 20 min - Design Patterns Lesson
- 20 min - Discussing Design Patterns Exercise
Additional Resources
- Explore the origins of design patterns as a concept in general (not just in programming) with Christopher Alexander’s A Pattern Language.
- Some additional reading and explanations of design patterns.
- Examples of design pattern-related interview questions.
- More design pattern interview topics.
Internal resources
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