An Alternative to Virtual Functions in Modern C++. Application in Training

Authors:

Pages: 144-159
DOI: https://doi.org/10.54664/KPDP6631

Abstract:

Although virtual functions are a convenient object-oriented programming mechanism, they come at a cost in terms of additional computational resources. Additionally, the vulnerabilities related to the implementation of this mechanism have long been known. On the other hand, domains in which C++ is used assume high code efficiency and uncompromising reliability and safety. In this study, problems related to virtual functions, optimization and vulnerability mitigation techniques, as well as alternative methods are analyzed. A new non-virtual approach has been developed, based on the modern language features described in the C++20 and C++23 standards. This approach can improve performance and security while maintaining flexibility in software development. Aspects of integration of the approach into student training are discussed.

Keywords:

virtual function, type erasure, vtable, concept, variadic templates, metaprogramming, education.

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