C++ named requirements: LegacyContiguousIterator (od C++17)
A LegacyContiguousIterator is a LegacyIterator whose logically adjacent elements are also physically adjacent in memory.
A pointer to an element of an array satisfies all requirements of LegacyContiguousIterator.
Requirements
The type It satisfies LegacyContiguousIterator if
The type It satisfies LegacyIterator And, for every
a
, a dereferenceable iterator of type Itn
, an integral value
such that
a + n
is a valid and dereferenceable iterator value
then
*(a + n)
is equivalent to*(std::addressof(*a) + n)
.
Standard library
The following standard library types are LegacyContiguousIterators.
- array::iterator.
- basic_string_view::iterator.
- basic_string::iterator.
- vector::iterator for
value_type
other thanbool
. - The return type of std::begin(std::valarray) and std::end(std::valarray).
Notes
Fancy pointer to object types are also required to satisfy LegacyContiguousIterator.
LegacyContiguousIterator is replaced with the contiguous_iterator concept: iterator types in the standard library that are required to satisfy LegacyContiguousIterator in C++17 are required to model contiguous_iterator in C++20. (od C++20)