CppCon 2020 The Surprising Costs of void() (and Other Not-Quite-Innocuous Evils)--Patrice Roy

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Registration is now open for CppCon 2021, which starts on October 24 and will be held both in person and online. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from our most recent in-person conference in 2019 and our online conference in 2020. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2021 to attend in person, online, or both!

The Surprising Costs of void() (and Other Not-Quite-Innocuous Evils)

by Patrice Roy

Summary of the talk:

There are some things that might pass us by without us noticing them as evil or, as they have come to be known, Bad Code Smells.

Many of these little things are acceptable in some cases, and thus pass unnoticed in some code reviews. They are respectful of language rules, and thus pass unnoticed through the compiler's virtual hands. They might even lead to working code... and if it works, it's fine, no?

The idea for this talk came about when discussing with colleagues about such suspicious code and coding patterns, and hearing such questions as "but why is that a problem?". It's about those little evils that creep in code and poison our practice in subtle ways (making memory consumption higher than it should be, making execution slower than it should be, making reuse harder than it should be, etc.).

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