Ep 151: C++20's Lambdas As Custom Comparators

Summary

This episode demonstrates how C++20's lambda improvements simplify custom comparators in container classes. Jason revisits his previous Episode 94 on lambdas as comparators in C++17, showing how the new C++20 features - default constructible stateless lambdas and lambdas in unevaluated contexts - eliminate the need for workarounds. He demonstrates a cleaner approach for using lambdas as custom comparators in std::set, highlighting how this allows for default initialization of containers with custom comparison functions.