c thomas howell CppCon 2018: Michał Dominiak “Co- and Contra-: Adding a Little Variance”

http://CppCon.org
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Presentation Slides, PDFs, Source Code and other presenter materials are available at: https://github.com/CppCon/CppCon2018
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C++ had support for covariance almost since the dawn of time, that is: since 1998. This support, however, is limited, and covariance is only limited for types that are fully understood by the compiler, without any way to influence that knowledge. While sometimes useful, it remains a - somewhat - forgotten tool, especially since the dawn of the new era of C++11, where raw owning pointers are frowned upon.

This talk tries to present a case for co- and contravariance: what they are, why they are useful, and how other languages do them. It'll also discuss them in the context of C++: what tools we already have, what tools we can build today without the interference with our compilers, and what a possible future of the feature could look like.
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Michał Dominiak, Nvidia
System Software Engineer

Bachelor of Engineering in Computer Science from Wrocław University of Technology. Professional and enthusiast programmer. Interested in the foundational problems of computing, from the lowest levels of CPU architectures, through operating systems and programming language design. Sometimes also a guitar player and singer.
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Videos Filmed & Edited by Bash Films: http://www.BashFilms.com

c thomas howell CppCon 2018: Michał Dominiak “Co- and Contra-: Adding a Little Variance”
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