The Smart Pointers I Wish I Had - Matthew Fleming - CppCon 2019

http://CppCon.org Discussion & Comments: https://www.reddit.com/r/cpp/ Presentation Slides, PDFs, Source Code and other presenter materials are available at: https://github.com/CppCon/CppCon2019 — The Smart Pointers I Wish I Had C++ offers two owning smart pointers, and a proposed non-owning smart pointer in the C++20 Library Fundamentals v2 Technical Specification. This talk will cover the kinds of semantics I think are important in a non-owning pointer, why I think more than one is desirable, and why the existing C++ owning smart pointers are sub-optimal for some use-cases. I will show how correct use of non-owning smart pointers can reduce memory lifetime issues, clarify code, and nearly eliminate incorrect ownership. For asynchronous programming especially, the lifetime of observing pointers can be a source of significant and difficult to debug issues. I'll cover a mental model to use when writing code that helps focus on where lifetime issues might be likely, and where they will be unlikely. — Matthew Fleming I've been working in systems software for almost 20 years now, mostly on virtual memory and filesystems, in both C and C++. I tend to find myself gravitating lower and lower in the stack, to code primitives, library helpers, and getting very close to the hardware. — Videos Filmed & Edited by Bash Films: http://www.BashFilms.com Work at Hudson River Trading (HRT): https://tinyurl.com/safxfctf