Andrey Semashev e25d85446e Use Boost.Iterator to advance iterators. ...

By using Boost.Iterator we rely on the separate traversal category instead of
the standard iterator category to advance iterators efficiently. For instance,
this allows to advance transform iterators over a random access sequence
in constant time, despite that they are formally input iterators.

Also, std::reverse_iterator formally requires at least bidirectional iterator
as the underlying iterator type. Transform iterators from the example above
don't qualify, so potentially std::reverse_iterator could fail to compile.

2017-07-12 21:15:20 +03:00

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boost

Use Boost.Iterator to advance iterators.

2017-07-12 21:15:20 +03:00