Design Patterns Field Guide

Noah Bekele · 184 pages

Concise, practical notes on Strategy, Observer, Factory and other patterns built on polymorphism.

Key concepts

Polymorphism

One interface, many forms: code written against a general type works with every specialised type that honours it.

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Interfaces & Protocols

Contracts that describe required behaviour without dictating implementation.

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Abstraction

Modelling what something does while hiding how it does it.

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