#include <Rodin/Utility/BottomTemplate.h>

template<class T>

Rodin::Utility::BottomTemplate struct

Metafunction to extract the innermost (bottom) type from nested templates.

Template parameters
T	The type to extract the bottom type from.

BottomTemplate recursively unwraps template wrappers to find the innermost type. For a non-template type T, the result is T itself. For a nested template like A<B<C<D>>>, the result is D.

Example usage:

using Nested = std::vector<std::optional<int>>;
using Bottom = BottomTemplate<Nested>::Type;
// Bottom is int (assuming single-param template specialization)

Public types

using Type = T

The type itself when T is not a template instantiation.