التماسك والاقتران

في هذا الدرس

judge how well a class is built.

الموضوعات المخطط لها

• Cohesion: do the parts of a class belong together? High cohesion is good.
• Coupling: how much does one class depend on others? Low coupling is good.
• Like a workshop: tools for one job in one drawer, and little need to walk between rooms.
• Reduce coupling: depend on a small interface, not on a concrete class; hide details.
• A class that does many unrelated things has low cohesion; split it.