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Editorial Team
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Editorial Team
Asked: May 21, 20262026-05-21T12:09:41+00:00 2026-05-21T12:09:41+00:00

From a design point of view, why is that, in C++, there is no

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From a design point of view, why is that, in C++, there is no mother-of-all base-class, what’s usually object in other languages?

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  1. Editorial Team
    Editorial Team
    2026-05-21T12:09:42+00:00Added an answer on May 21, 2026 at 12:09 pm

    The definitive ruling is found in Stroustrup’s FAQs.
    In short, it doesn’t convey any semantic meaning. It will have a cost. Templates are more useful for containers.

    Why doesn’t C++ have a universal class Object?

    • We don’t need one: generic programming provides statically type safe alternatives in most cases. Other cases are handled using multiple inheritance.

    • There is no useful universal class: a truly universal carries no semantics of its own.

    • A "universal" class encourages sloppy thinking about types and interfaces and leads to excess run-time checking.

    • Using a universal base class implies cost: Objects must be heap-allocated to be polymorphic; that implies memory and access cost. Heap objects don’t naturally support copy semantics. Heap objects don’t support simple scoped behavior (which complicates resource management). A universal base class encourages use of dynamic_cast and other run-time checking.

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