Range V3 Versions Save

0.2.6 2017-06-21

• Experimental coroutines with ranges::experimental::generator (from @CaseyCarter)
• ranges::optional now behaves like std::optional (from @CaseyCarter)
• Extensive bug fixes with Input ranges (from @CaseyCarter)

• view::chunk works on Input ranges (from @CaseyCarter)
• for_each_n algorithm (from @khlebnikov)
• Portability fixes for MinGW, clang-3.6 and -3.7, and gcc-7; and cmake 3.0

0.2.4 April 12, 2017 Fix the following bug:

• action::stable_sort of vector broken on Clang 3.8.1 since ~last Xmas (ericniebler/range-v3#632).

Fix the following bug:

• iterators that return move-only types by value do not satisfy Readable (ericniebler/stl2#399).

New in this release:

• view::linear_distribute(from,to,n) - A view of n elements between from and to, distributed evenly.
• view::indices(n) - A view of the indices [0,1,2...n-1].
• view::closed_indices(n) - A view of the indices [0,1,2...n].

This release also deprecates view::ints(n) as confusing to new users.

New in this release:

• view::cartesian_product
• action::reverse

Thanks to @gnzlbg and @CaseyCarter for their help.

Bring many interfaces into sync with the Ranges TS.

• Many interfaces are simply renamed. The following table shows the old names and the new. (All names are in the ranges::v3 namespace.)

  Old Name	New Name
  indirect_swap	iter_swap
  indirect_move	iter_move
  iterator_value_t	value_type_t
  iterator_reference_t	reference_t
  iterator_difference_t	difference_type_t
  iterator_size_t	size_type_t
  iterator_rvalue_reference_t	rvalue_reference_t
  iterator_common_reference_t	iter_common_reference_t
  range_value_t	range_value_type_t
  range_difference_t	range_difference_type_t
  range_size_t	range_size_type_t
  range_iterator_t	iterator_t
  range_sentinel_t	sentinel_t

• common_iterator now requires that its two types (Iterator and Sentinel) are different. Use common_iterator_t<I, S> to get the old behavior (i.e., if the two types are the same, it is an alias for I; otherwise, it is common_iterator<I, S>).

• The following iterator adaptors now work with iterators that return proxies from their postfix increment operator (i.e., operator++(int)):

  • common_iterator
  • counted_iterator

• The following customization points are now implemented per the Ranges TS spec and will no longer find the associated unconstrained overload in namespace std:::

  • ranges::begin
  • ranges::end
  • ranges::size
  • ranges::swap
  • ranges::iter_swap

  (In practice, this has very little effect but it may effect overloading in rare situations.)

• ranges::is_swappable now only takes one template parameter. The new ranges::is_swappable_with<T, U> tests whether T and U are swappable. ranges::is_swappable<T> is equivalent to ranges::is_swappable_with<T &, T &>.

• The following object concepts have changed to conform with the Ranges TS specification, and approved changes (see P0547):

  • Destructible
  • Constructible
  • DefaultConstructible
  • MoveConstructible
  • CopyConstructible
  • Movable
  • Assignable

• The View concept is no longer satisfied by reference types.

• is_view is now called enable_view

• The syntax for defining a concept has changed slightly. See utility/iterator_concepts.hpp for examples.

This release drops support for gcc 4.8.

Small tweak to Writable concept to fix #573.

This is a fairly stable release, and the first one to use semantic versioning.