What are the limitations of constexpr in C++?
An example of an AI chatbot conversation about constexpr limitations in C++.
What are the limitations of constexpr in C++?
In C++, constexpr functions must have a return type that is a literal type, and they can only contain a limited set of operations.
Can constexpr be used with classes?
Yes, you can use constexpr with classes, but the class members must also be constexpr if you want to use them in a constexpr context.
Are there any restrictions on the types of variables used in constexpr?
Yes, only certain types can be used in constexpr, such as integral types, floating-point types, and user-defined types that meet specific criteria.
How does constexpr differ from const?
constexpr implies that the value is known at compile time, while const can be initialized at runtime, making constexpr more restrictive.
Can I use constexpr with templates?
Yes, you can use constexpr with templates, allowing for compile-time computations based on template parameters.
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