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Designing and implementing a variant type (such as `std::variant` itself) in C++, at first, seems a rather inane topic. It turns out, however, that a variant type's performance or lack thereof, can have an inordinately large impact on software that directly impacts the bottom-line performance of important applications, such as interpreters. database clients, and communication protocols.
In this talk we will delve into the gory details of designing and implementing variant types, with an emphasis on layout, construction, and destruction. Along the way we'll figure out how to optimize not only the run time of the produced program, but also the time and memory consumed during compilation. These aspects, although seldom discussed, are important for provisioning and deploying continuous integration systems.
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Andrei Alexandrescu
Andrei Alexandrescu is a researcher, software engineer, and author. He wrote three best-selling books on programming (Modern C++ Design, C++ Coding Standards, and The D Programming Language) and numerous articles and papers on wide-ranging topics from programming to language design to Machine Learning to Natural Language Processing. Andrei holds a PhD in Computer Science from the University of Washington and a BSc in Electrical Engineering from University "Politehnica" Bucharest. He is the Vice President of the D Language Foundation.
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