What are some tips for using constexpr in C++14?

What are some tips for using constexpr in C++14?

In C++14, you can use constexpr to define functions that can be evaluated at compile time. Here are some tips: 1. Keep your constexpr functions simple. 2. Use constexpr for small utility functions. 3. Remember that constexpr functions can now have multiple return statements.

Can I use constexpr with classes?

Yes, you can use constexpr with classes in C++14. You can define constexpr member functions and even constexpr constructors, allowing for compile-time initialization of class instances.

What are the limitations of constexpr in C++14?

Some limitations include that constexpr functions cannot contain any statements that are not allowed in constant expressions, such as dynamic memory allocation or certain types of loops.

How does constexpr improve performance?

constexpr can improve performance by allowing computations to be done at compile time, reducing runtime overhead and enabling optimizations.

Are there any best practices for using constexpr?

Yes, best practices include using constexpr for small, frequently used functions, avoiding complex logic, and ensuring that your functions are easy to understand.