Differences between std::is_integer and std::is_integral?
c++, c++11, language-lawyer, type-traits
Solution
`std::is_integer<T>` does not exist.
That being said, `std::numeric_limits<T>::is_integer` does exist.
I'm not aware of any significant difference between `std::numeric_limits<T>::is_integer` and `std::is_integral<T>`. The latter was designed much later and became standard in C++11, whereas the former was introduced in C++98.
Problem
C++11 provides two type trait template classes: `std::is_integer` and `std::is_integral`. However, I cannot tell the differences between them. What type, say T, can make `std::is_integer<T>::value` true and make `std::is_integral<T>::value` false?