# ContainerRange¶

[req.container_range]

ContainerRange is a range that represents a concurrent container or a part of the container.

ContainerRange object can be used to traverse the container in parallel algorithms like parallel_for.

The type CR satisfies the ContainerRange requirements if:

• The type CR meets the requirements of Range requirements.

• The type CR provides the following member types and functions:

type CR::value_type

The type of the item in the range.

type CR::reference

Reference type to the item in the range.

type CR::const_reference

Constant reference type to the item in the range.

type CR::iterator

Iterator type for range traversal.

type CR::size_type

Unsigned integer type for obtaining grainsize.

type CR::difference_type

The type of the difference between two iterators

iterator CR::begin()

Returns iterator to the beginning of the range.

iterator CR::end()

Returns iterator follows the last element in the range.

size_type CR::grainsize() const

Retuns the range grainsize.