C++ 20 (2a) New Features - Rationale Behind Concepts

The video discusses the rationale behind using concepts in programming, focusing on how they can improve error messages during code compilation. An example is provided where a list of integers is sorted using the STD sort algorithm, leading to complex error messages due to iterator issues. Concepts are introduced as a solution to validate template argument types at compile time, aiming to simplify error messages. The next video will explore concepts as compile-time predicates.

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