[ Course Documents ] : [ Object-Oriented Programming ]

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Design Issue: Exclusivity of Objects

• Everything is an object
  • Adv.--elegance and purity
  • Disadv.--slow operations on simple objects (e.g., float)

• Add objects to a complete typing system
  • Adv.--fast operations on simple objects
  • Disadv.--results in a confusing type system

• Include an imperative-style typing system for primitives but make everything else objects
  • Adv.--fast operations on simple objects and a relatively small typing system
  • Disadv.--still some confusion because of the two type systems