C++26: range support for std:optional
7 days ago
- #std::optional
- #C++
- #Ranges
- The new range API of std::optional allows iteration over optional values, executing loops zero or one time.
- Range-based approach integrates std::optional seamlessly into range pipelines, eliminating manual null checks.
- Competing proposals like views::maybe and views::nullable were considered but std::optional's range interface was chosen for simplicity.
- std::optional now specializes std::ranges::enable_view, making it a view containing at most one element.
- Iterator types for std::optional are implementation-defined to ensure safety and simplicity.
- The new interface enhances composability with other range operations without introducing new types.