#Design Patterns Overview

This section collects GoF patterns with practical examples and guidance. Use it to pick a suitable pattern, not to force one.

#Quick decision guide

• Object creation is complex → look at Creational patterns.
• You need to compose behavior → look at Structural patterns.
• You want flexible interactions → look at Behavioral patterns.

#Common comparisons (quick picks)

• Strategy vs State: Strategy is chosen by the client; State changes from within the object.
• Adapter vs Facade: Adapter changes an interface; Facade simplifies a subsystem.
• Decorator vs Proxy: Decorator adds behavior; Proxy controls access.

#Pattern map (by intent)

#Next steps

• Start with the closest intent.
• Check “Related patterns” for alternatives.
• If two patterns fit, pick the simpler one.