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CppCon 2019 has ended
Thursday September 19, 2019 09:00 - 10:00 MDT
You may be familiar with the terms lvalue, rvalue, and xvalue, if only because they occasionally appear in compiler error messages. However, if you have only a vague understanding of what they mean, you're not alone. Lvalues, rvalues, and xvalues aren't actually language features, but rather semantic properties of expressions and sub-expressions. Understanding these properties provides valuable insights into the behavior of built-in operators, the code generated to execute those operators, and the meaning of some otherwise cryptic compiler error messages. Understanding these properties is also essential for working effectively with lvalue and rvalue reference types, as well as overloaded operators.

This session explains why the language distinguishes among lvalues, rvalues, and xvalues. It describes how the semantic properties of lvalues, rvalues, and xvalues are different and how those properties are reflected in the behavior of lvalue and rvalue references.
Speakers
avatar for Ben Saks

Ben Saks

Chief Engineer, Ben Saks Consulting
Ben Saks is the chief engineer of Saks & Associates, which offers training and consulting in C and C++ and their use in developing embedded systems. Ben has represented Saks & Associates on the ISO C++ Standards committee as well as two of the committee’s study groups: SG14 (low-latency... Read More →
Thursday September 19, 2019 09:00 - 10:00 MDT
Aurora C

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