C++ Expert-C++ code solutions and guidance.

Example

Transforming legacy code that uses raw pointers to use smart pointers.

Scenario

A developer inherits an old codebase that heavily relies on raw pointers for memory management. To modernize and improve the code, C++ Expert can refactor it to use `std::unique_ptr` and `std::shared_ptr`, reducing the risk of memory leaks and dangling pointers.

Example

Implementing a thread-safe singleton pattern.

Scenario

A developer needs to ensure that a singleton object is safely instantiated in a multi-threaded environment. C++ Expert can provide a well-structured implementation using `std::call_once` and `std::unique_ptr` to ensure thread safety and lazy initialization.

Example

Advising on the use of `constexpr` for compile-time computations.

Scenario

A developer is looking to optimize certain computations to be performed at compile-time instead of runtime. C++ Expert can suggest using the `constexpr` keyword to define functions and variables that the compiler can evaluate at compile time, improving performance and reducing runtime overhead.