Modern C++ for C Programmers: Part 4 - Bert Hubert's writings
a day ago
- Lambdas are syntactical sugar that make C++ more expressive and can yield faster code due to better compiler optimization.
- Lambdas can capture variables by value or reference, and can be stored in std::function or used as function pointers if no capture.
- C++ containers like std::vector and std::unordered_map can be combined with algorithms such as std::sort, std::nth_element, and std::lower_bound for efficient data manipulation.
- Using raw pointers to keys in another container can save memory but requires careful handling to avoid dangling references.
- Boost provides additional containers like boost::container::flat_map and boost::container::small_vector for specific performance needs.
- Boost.MultiIndex allows creating containers with multiple indexes (ordered, unordered, unique, non-unique) for efficient multi-key lookups, as demonstrated with TCP session management.
- The article emphasizes using existing C++ algorithms before writing custom code, and highlights the importance of understanding container and algorithm interactions.