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template<bool Const> class/*iterator*/ | (since C++20) (exposition only*) | |
The return type oftransform_view::begin, and oftransform_view::end when the underlying view is acommon_range.
The type/*iterator*/<true> is returned by the const-qualified overloads. The type/*iterator*/<false> is returned by the non-const-qualified overloads.
Contents |
| Member type | Definition |
Parent(private) | maybe-const <Const,ranges::transform_view<V, F>>(exposition-only member type*) |
Base(private) | maybe-const <Const, V>(exposition-only member type*) |
iterator_concept |
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iterator_category(present only if Base modelsforward_range) | LetMCF bemaybe-const <Const, F>.
Otherwise, let
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value_type | std::remove_cvref_t<std::invoke_result_t<MCF&,ranges::range_reference_t<Base>>>, whereMCF denotesmaybe-const <Const, F> |
difference_type | ranges::range_difference_t<Base> |
| Member name | Definition |
current_(private) | An iterator into (possibly const-qualified)V.(exposition-only member object*) |
parent_(private) | A pointer to parenttransform_view.(exposition-only member object*) |
| constructs an iterator (public member function) | |
| returns the underlying iterator (public member function) | |
| accesses the transformed element (public member function) | |
| accesses an element by index (public member function) | |
| advances or decrements the underlying iterator (public member function) |
| compares the underlying iterators (function) | |
(C++20) | performs iterator arithmetic (function) |
(C++20) | obtains an rvalue reference to the transformed element (function) |
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| P2259R1 | C++20 | memberiterator_category is always defined | defined only ifBase modelsforward_range |
| LWG 3555 | C++20 | the definition ofiterator_concept ignores const | made to consider |
| LWG 3798 | C++20 | iterator_category is input-only if transformation result is rvalue reference | may have a stronger category |
