Namespaces
Variants
Actions

std::input_iterator

From cppreference.com
< cpp‎ | iterator
 
C++
 
Iterator library
Iterator concepts
(C++20)
(C++20)
input_iterator
(C++20)
(C++20)
(C++20)

Iterator primitives
Algorithm concepts and utilities
Indirect callable concepts
Common algorithm requirements
(C++20)
(C++20)
(C++20)
Utilities
(C++20)
Iterator adaptors
Range access
(C++11)(C++14)
(C++14)(C++14)  
(C++11)(C++14)
(C++14)(C++14)  
(C++17)(C++20)
(C++17)
(C++17)
 
Defined in header <iterator>
template< class I >

    concept input_iterator =
        std::input_or_output_iterator<I> &&
        std::indirectly_readable<I> &&
        requires { typename /*ITER_CONCEPT*/<I>; } &&

        std::derived_from</*ITER_CONCEPT*/<I>, std::input_iterator_tag>;
 (since C++20)

The input_iterator concept is a refinement of input_or_output_iterator, adding the requirement that the referenced values can be read (via indirectly_readable) and the requirement that the iterator concept tag be present.

Contents