Explore the intricacies of user-defined literals (UDLs) in C++ through this comprehensive ACCU 2022 conference talk by Pablo Halpern. Delve into the benefits, implementation methods, best practices, and potential pitfalls of UDLs. Learn when to use and when to avoid creating custom literals, understanding their role in minimizing expressive differences between built-in types and user-defined types. Gain insights into various UDL definition techniques, ranging from simple to complex, and discover how to safely embrace this powerful C++ feature to enhance code readability and expressiveness.