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Asked: 2026-05-29T20:12:54+00:00

What is unbounded dynamic polymorphism in Smalltalk? Could someone provide an example? It’s mentioned

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What is “unbounded dynamic polymorphism” in Smalltalk? Could someone provide an example?

It’s mentioned in this book:C++ templates: the complete guide, p. 238.

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  1. Editorial Team

    See
    In c++:
    Polymorphism implemented via inheritance is bounded and dynamic:

    • Bounded means that the interfaces of the types participating in the polymorphic behavior are predetermined by the design of the common base class (other terms for this concept are invasive or intrusive).
    • Dynamic means that the binding of the interfaces is done at run time (dynamically).

    Polymorphism implemented via templates is unbounded and static:

    • Unbounded means that the interfaces of the types participating in the polymorphic behavior are not predetermined (other terms for this concept are noninvasive or nonintrusive).
    • Static means that the binding of the interfaces is done at compile time (statically).

    In Smalltalk, an object can decide if and how it wants to react to a message being sent at runtime.

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