An InputIterator that applies a transformation to the elements of the range. More...

#include <kblib/iterators.h>

Public Types
using	difference_type = std::ptrdiff_t

using	result_type = decltype(kblib::invoke(op, *it))

using	const_result_type = decltype(kblib::invoke(std::as_const(op), *std::as_const(it)))

using	value_type = result_type

using	pointer = void

using	reference = value_type

using	iterator_category = std::input_iterator_tag

Public Member Functions
	transform_iterator (base_iterator _it, operation _op) noexcept(noexcept(base_iterator{ _it}) and noexcept(std::is_nothrow_move_constructible< operation >::value))
	Constructs a transform_iterator which applies _op to the values obtained from *_it. More...

	transform_iterator (base_iterator end_it) noexcept(noexcept(base_iterator{ end_it}))
	constructs a non-dereferenceable sentinel iterator More...

auto	operator* () noexcept(noexcept(kblib::invoke(op, *it))) -> decltype(auto)
	Transforms the value obtained by dereferencing it. More...

decltype(auto)	operator* () const noexcept(noexcept(kblib::invoke(op, *it)))
	Transforms the value obtained by dereferencing it. More...

auto	operator-> () noexcept(noexcept(kblib::invoke(op, *it))) -> auto
	Returns a containing_ptr with the transformed value, because operator-> expects a pointer-like return type. More...

auto	operator-> () const noexcept(noexcept(kblib::invoke(op, *it))) -> auto
	Returns a containing_ptr with the transformed value, because operator-> expects a pointer-like return type. More...

auto	operator++ () noexcept(noexcept(++it)) -> transform_iterator &
	Increments the underlying iterator and returns *this. More...

auto	operator++ (int) noexcept(noexcept(transform_iterator{it++, op})) -> transform_iterator
	Increments the underlying iterator and returns a copy of the current value. More...

auto	base () const noexcept -> base_iterator

Friends
auto	operator== (const transform_iterator &lhs, const transform_iterator &rhs) noexcept -> bool
	Compares the base iterators of lhs and rhs. More...

auto	operator!= (const transform_iterator &lhs, const transform_iterator &rhs) noexcept -> bool
	Compares the base iterators of lhs and rhs. More...

template<typename OIt >
auto	operator== (const transform_iterator &lhs, const OIt &rhs) noexcept -> bool

template<typename OIt >
auto	operator== (const OIt &lhs, const transform_iterator &rhs) noexcept -> bool

template<typename OIt >
auto	operator!= (const transform_iterator &lhs, const OIt &rhs) noexcept -> bool

template<typename OIt >
auto	operator!= (const OIt &lhs, const transform_iterator &rhs) noexcept -> bool

Detailed Description

template<typename base_iterator, typename operation>
class kblib::transform_iterator< base_iterator, operation >

An InputIterator that applies a transformation to the elements of the range.

Attention: This class template depends on features introduced in C++17.

Definition at line 1148 of file iterators.h.

Member Typedef Documentation

◆ const_result_type

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::const_result_type = decltype(kblib::invoke(std::as_const(op), *std::as_const(it)))

Definition at line 1156 of file iterators.h.

◆ difference_type

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::difference_type = std::ptrdiff_t

Definition at line 1154 of file iterators.h.

◆ iterator_category

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::iterator_category = std::input_iterator_tag

Definition at line 1161 of file iterators.h.

◆ pointer

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::pointer = void

Definition at line 1159 of file iterators.h.

◆ reference

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::reference = value_type

Definition at line 1160 of file iterators.h.

◆ result_type

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::result_type = decltype(kblib::invoke(op, *it))

Definition at line 1155 of file iterators.h.

◆ value_type

template<typename base_iterator , typename operation >

using kblib::transform_iterator< base_iterator, operation >::value_type = result_type

Definition at line 1158 of file iterators.h.

Constructor & Destructor Documentation

◆ transform_iterator() [1/2]

template<typename base_iterator , typename operation >

kblib::transform_iterator< base_iterator, operation >::transform_iterator	(	base_iterator	_it,
		operation	_op
	)

inlinenoexcept

Constructs a transform_iterator which applies _op to the values obtained from *_it.

Parameters

_it	An InputIterator to a range to be transformed.
_op	The operation to apply to each element.

Definition at line 1170 of file iterators.h.

◆ transform_iterator() [2/2]

template<typename base_iterator , typename operation >

kblib::transform_iterator< base_iterator, operation >::transform_iterator ( base_iterator end_it )

inlinenoexcept

constructs a non-dereferenceable sentinel iterator

Parameters

end_it An iterator that marks the end of the input range.

Definition at line 1181 of file iterators.h.

Member Function Documentation

◆ base()

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::base ( ) const -> base_iterator

inlinenoexcept

Definition at line 1237 of file iterators.h.

◆ operator*() [1/2]

template<typename base_iterator , typename operation >

decltype(auto) kblib::transform_iterator< base_iterator, operation >::operator* ( ) const

inlinenoexcept

Transforms the value obtained by dereferencing it.

Returns: decltype(auto) The result of invoking op on *it.

Definition at line 1200 of file iterators.h.

◆ operator*() [2/2]

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::operator* ( ) -> decltype(auto)

inlinenoexcept

Transforms the value obtained by dereferencing it.

Returns: decltype(auto) The result of invoking op on *it.

Definition at line 1191 of file iterators.h.

◆ operator++() [1/2]

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::operator++ ( ) -> transform_iterator&

inlinenoexcept

Increments the underlying iterator and returns *this.

Definition at line 1222 of file iterators.h.

◆ operator++() [2/2]

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::operator++ ( int ) -> transform_iterator

inlinenoexcept

Increments the underlying iterator and returns a copy of the current value.

Definition at line 1232 of file iterators.h.

◆ operator->() [1/2]

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::operator-> ( ) const -> auto

inlinenoexcept

Returns a containing_ptr with the transformed value, because operator-> expects a pointer-like return type.

Definition at line 1215 of file iterators.h.

◆ operator->() [2/2]

template<typename base_iterator , typename operation >

auto kblib::transform_iterator< base_iterator, operation >::operator-> ( ) -> auto

inlinenoexcept

Returns a containing_ptr with the transformed value, because operator-> expects a pointer-like return type.

Definition at line 1208 of file iterators.h.

Friends And Related Function Documentation

◆ operator!= [1/3]

template<typename base_iterator , typename operation >

template<typename OIt >

auto operator!=	(	const OIt &	lhs,
		const transform_iterator< base_iterator, operation > &	rhs
	)		-> bool

friend

Definition at line 1272 of file iterators.h.

◆ operator!= [2/3]

template<typename base_iterator , typename operation >

template<typename OIt >

auto operator!=	(	const transform_iterator< base_iterator, operation > &	lhs,
		const OIt &	rhs
	)		-> bool

friend

Definition at line 1267 of file iterators.h.

◆ operator!= [3/3]

template<typename base_iterator , typename operation >

auto operator!=	(	const transform_iterator< base_iterator, operation > &	lhs,
		const transform_iterator< base_iterator, operation > &	rhs
	)		-> bool

friend

Compares the base iterators of lhs and rhs.

Definition at line 1250 of file iterators.h.

◆ operator== [1/3]

template<typename base_iterator , typename operation >

template<typename OIt >

auto operator==	(	const OIt &	lhs,
		const transform_iterator< base_iterator, operation > &	rhs
	)		-> bool

friend

Definition at line 1261 of file iterators.h.

◆ operator== [2/3]

template<typename base_iterator , typename operation >

template<typename OIt >

auto operator==	(	const transform_iterator< base_iterator, operation > &	lhs,
		const OIt &	rhs
	)		-> bool

friend

Definition at line 1256 of file iterators.h.

◆ operator== [3/3]

template<typename base_iterator , typename operation >

auto operator==	(	const transform_iterator< base_iterator, operation > &	lhs,
		const transform_iterator< base_iterator, operation > &	rhs
	)		-> bool

friend

Compares the base iterators of lhs and rhs.

Definition at line 1242 of file iterators.h.

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

kblib/iterators.h

Public Types

Public Member Functions

Friends

Detailed Description

template<typename base_iterator, typename operation> class kblib::transform_iterator< base_iterator, operation >

Member Typedef Documentation

◆ const_result_type

◆ difference_type

◆ iterator_category

◆ pointer

◆ reference

◆ result_type

◆ value_type

Constructor & Destructor Documentation

◆ transform_iterator() [1/2]

◆ transform_iterator() [2/2]

Member Function Documentation

◆ base()

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ operator++() [1/2]

◆ operator++() [2/2]

◆ operator->() [1/2]

◆ operator->() [2/2]

Friends And Related Function Documentation

◆ operator!= [1/3]

◆ operator!= [2/3]

◆ operator!= [3/3]

◆ operator== [1/3]

◆ operator== [2/3]

◆ operator== [3/3]

template<typename base_iterator, typename operation>
class kblib::transform_iterator< base_iterator, operation >