Summary

Templates in C++ enable computation to occur during the build process. This means that certain operations, such as computing the factorial of a number, can be performed at compile time instead of runtime. While most compile-time calculations can be replaced with “ordinary functions” using constexpr functions, templates are still useful in cases where they are necessary. In template metaprogramming, it is possible to examine and even change the attributes of a type using type traits. One important concept in this field is SFINAE, which states that the replacement of functional templated declarations should not produce bad code, and templates should only be used when necessary. Another important aspect of templates is the constexpr if statement, which serves as a compile-time if statement. It allows for the conditional execution of statements based on constant expressions, enabling even more complex computations to occur during the build process. In summary, templates...