mysql::ranges::detail::Projection_transform< index_tp > Struct Template Reference

Function-like class that projects a tuple-like object to the Nth element. More...

#include <projection_views.h>

Static Public Member Functions
template<class Tuple_t >
static decltype(auto)	transform (Tuple_t &&tuple)
	Select component number index_tp from tuple. More...

Detailed Description

template<std::size_t index_tp>
struct mysql::ranges::detail::Projection_transform< index_tp >

Function-like class that projects a tuple-like object to the Nth element.

Template Parameters

index_tp

The index of the element to project on.

Member Function Documentation

transform()

template<std::size_t index_tp>

template<class Tuple_t >

static decltype(auto) mysql::ranges::detail::Projection_transform< index_tp >::transform ( Tuple_t &&  tuple )

inlinestatic

Select component number index_tp from tuple.

The element type must not be an rvalue reference.

The returned type is:

• a reference, if either the tuple is an lvalue reference, or the element type is an lvalue reference.
• a non-reference, otherwise, i.e., when the element type is a non-reference and the tuple type is an rvalue reference. In this case, the returned value is move-constructed from the tuple element.

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The documentation for this struct was generated from the following file:

• libs/mysql/ranges/projection_views.h