Type-Safe Interfaces with Modern C++ - What Is an Optional?

The video tutorial explores the concept of Optional T in C++, detailing its properties, use cases, and implementation. Optional T can be set or unset, representing a value that may or may not be present. It is used to model functions that can fail, control object lifetimes, and manage non-mandatory data members. The tutorial compares Optional T with smart pointers and raw pointers, highlighting its advantages in terms of value semantics and memory efficiency. Examples demonstrate how Optional T can be used in function signatures and data structures, particularly in microservice architectures.

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