std::layout_left::mapping<Extents>::operator()

template < class... Indices > constexpr index_type operator( ) ( Indices... indices ) const noexcept ;		(since C++23)

Maps the multidimensional index indices into an offset value.

Equivalent to return ( ( static_cast <index_type> (indices) * stride(P) ) + ... + 0 ) ; where P is a pack such that std::is_same_v < std::index_sequence_for <Indices...>, std::index_sequence <P...>> is true

This overload participates in overload resolution only if :

• sizeof...(Indices) == extents_type​::​rank() is true
• ( std::is_convertible_v <Indices, index_type> && ...) is true
• ( std::is_nothrow_constructible_v <index_type, Indices> && ...) is true

If extents_type​:: index-cast (i) is not a multidimensional index in extents()

Parameters

indices

-

the multidimensional index in the underlying extents object

Return value

The offset value.

Example

This section is incomplete Reason: no example

See also

operator()	maps a multidimensional index into an offset value (public member function of std::layout_right::mapping<Extents>)
operator()	maps a multidimensional index into an offset value (public member function of std::layout_stride::mapping<Extents>)
operator[]	accesses an element at the specified multidimensional index (public member function of std::mdspan<T,Extents,LayoutPolicy,AccessorPolicy>)