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- [/
- Copyright 2010 Neil Groves
- Distributed under the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- /]
- [section:upgrade Upgrade version of Boost.Range]
- [section:upgrade_from_1_55 Upgrade from version 1.55]
- # __iterator_range__ is now implemented by implementing the member functions
- `size()`, `operator[]` via inheritance of base-classes specialized by the
- traversal type of the underlying iterator. This is normally requires no
- alteration of code. It does mean that types that derive from iterator_range may
- need to prefix `this->` to the various member functions. Additionally it has
- been noted that some calling code was relying on member functions such as
- `size()` being present despite the underlying iterators not being random-access
- due to `iterator_reference<Iter>::type` not being a reference. The suggested
- refactoring is to use `boost::size(rng)`.
- # The undocumented __iterator_range__ `pop_front()` has been deprecated and is
- replaced by `drop_front(). Similarly `pop_back()` has been replaced by
- `drop_back()`.
- [endsect]
- [section:upgrade_from_1_49 Upgrade from version 1.49]
- # __size__ now returns the type Rng::size_type if the range has size_type;
- otherwise range_size<Rng>::type is used. This is the distance type promoted to
- an unsigned type.
- [endsect]
- [section:upgrade_from_1_45 Upgrade from version 1.45]
- # __size__ in addition to supporting __random_access_range__ now also supports extensibility via calls to the unqualified `range_calculate_size(rng)` function.
- # __range_adaptors_strided__ now in addition to working with any RandomAccessRange additionally works for any SinglePassRange for which `boost::size(rng)` is valid.
- # __range_adaptors_strided__ no longer requires `distance(rng) % stride_size == 0` or `stride_size < distance(rng)`
- [endsect]
- [section:upgrade_from_1_42 Upgrade from version 1.42]
- New features:
- # __range_adaptors__
- # __range_algorithms__
- Removed:
- # `iterator_range` no longer has a `is_singular` member function. The singularity restrictions have been removed from the `iterator_range` class since this added restrictions to ranges of iterators whose default constructors were not singular. Previously the `is_singular` member function always returned `false` in release build configurations, hence it is not anticipated that this interface change will produce difficulty in upgrading.
- [endsect]
- [section:upgrade_from_1_34 Upgrade from version 1.34]
- Boost version 1.35 introduced some larger refactorings of the library:
- # Direct support for character arrays was abandoned in favor of uniform treatment of all arrays. Instead string algorithms can use the new function __as_literal__`()`.
- # __size__ now requires a __random_access_range__. The old behavior is provided as __distance__`()`.
- # `range_size<T>::type` has been completely removed in favor of `range_difference<T>::type`
- # `boost_range_begin()` and `boost_range_end()` have been renamed `range_begin()` and `range_end()` respectively.
- # `range_result_iterator<T>::type` and `range_reverse_result_iterator<T>::type` have been renamed `range_iterator<T>::type` and `range_reverse_iterator<T>::type`.
- # The procedure that makes a custom type work with the library has been greatly simplified. See __extending_for_udts__ for details.
- [endsect]
- [endsect]
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