std::ranges::enumerate_view<V>::iterator

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Ranges library
Range access
Range conversions
(C++23)
Range primitives



Dangling iterator handling
Range concepts
Views

Range factories
Range adaptors
Range generators
Range adaptor objects
Range adaptor closure objects
Helper items
(until C++23)(C++23)


 
 
template< bool Const >
class /*iterator*/
(since C++23)

The return type of enumerate_view::begin, and of enumerate_view::end when the underlying view V is a common_range.

The type /*iterator*/<true> is returned by the const-qualified overloads. The type /*iterator*/<false> is returned by the non-const-qualified overloads.

The name of this class template (shown here as /*iterator*/) is unspecified.

Data members

Typical implementations of /*iterator*/ hold two non-static data members:

  • current_ of type ranges::iterator_t<Base>, that holds an iterator to the current element;
  • pos_ of type difference_type, that holds current index.

These names are for exposition only.

Member types

Member type Definition
Base (private) const V if Const is true, otherwise V. The name is for exposition only.
iterator_category std::input_iterator_tag
iterator_concept
difference_type ranges::range_difference_t<Base>
value_type std::tuple<difference_type, ranges::range_value_t<Base>>.
reference-type (private) std::tuple<difference_type, ranges::range_reference_t<Base>>. The name is for exposition only.

Member functions

constructs an iterator
(public member function)
(C++23)
returns an iterator to current element
(public member function)
(C++23)
returns current index
(public member function)
(C++23)
accesses the element
(public member function)
accesses an element by index
(public member function)
advances or decrements the underlying iterator
(public member function)

Non-member functions

compares the underlying iterators
(function)
performs iterator arithmetic
(function)
(C++23)
casts the result of dereferencing the underlying iterator to its associated rvalue reference type
(function)

Example

References

  • C++23 standard (ISO/IEC 14882:2023):
  • 26.7.23.3 Class template enumerate_view::iterator [range.enumerate.iterator]

See also