Type Comparisons and Modifications

Sometimes we need to manipulate or compare different types. We can use the type traits library for that!

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Type Comparisons

The library supports three kinds of type comparisons:

Function Description
template <class Base, class Derived> Checks if Derived is derived from Base.
struct is_base_of
template <class From, class To> Checks if From can be converted to To.
struct is_convertible
template <class T, class U> Checks if the types T and U are the same.
struct is_same

Type Modifications

The type traits library enables you to modify types during compile time. So you can modify the constness of a type:

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