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| <div class="titlepage"><div><div><h3 class="title"> |
| <a name="boost_optional.reference.acknowledgements"></a><a class="link" href="acknowledgements.html" title="Acknowledgements">Acknowledgements</a> |
| </h3></div></div></div> |
| <h5> |
| <a name="boost_optional.reference.acknowledgements.h0"></a> |
| <span class="phrase"><a name="boost_optional.reference.acknowledgements.pre_formal_review"></a></span><a class="link" href="acknowledgements.html#boost_optional.reference.acknowledgements.pre_formal_review">Pre-formal |
| review</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem"> |
| Peter Dimov suggested the name 'optional', and was the first to point |
| out the need for aligned storage. |
| </li> |
| <li class="listitem"> |
| Douglas Gregor developed 'type_with_alignment', and later Eric Friedman |
| coded 'aligned_storage', which are the core of the optional class implementation. |
| </li> |
| <li class="listitem"> |
| Andrei Alexandrescu and Brian Parker also worked with aligned storage |
| techniques and their work influenced the current implementation. |
| </li> |
| <li class="listitem"> |
| Gennadiy Rozental made extensive and important comments which shaped |
| the design. |
| </li> |
| <li class="listitem"> |
| Vesa Karvonen and Douglas Gregor made quite useful comparisons between |
| optional, variant and any; and made other relevant comments. |
| </li> |
| <li class="listitem"> |
| Douglas Gregor and Peter Dimov commented on comparisons and evaluation |
| in boolean contexts. |
| </li> |
| <li class="listitem"> |
| Eric Friedman helped understand the issues involved with aligned storage, |
| move/copy operations and exception safety. |
| </li> |
| <li class="listitem"> |
| Many others have participated with useful comments: Aleksey Gurotov, |
| Kevlin Henney, David Abrahams, and others I can't recall. |
| </li> |
| </ul></div> |
| <h5> |
| <a name="boost_optional.reference.acknowledgements.h1"></a> |
| <span class="phrase"><a name="boost_optional.reference.acknowledgements.post_formal_review"></a></span><a class="link" href="acknowledgements.html#boost_optional.reference.acknowledgements.post_formal_review">Post-formal |
| review</a> |
| </h5> |
| <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem"> |
| William Kempf carefully considered the originally proposed interface |
| and suggested the new interface which is currently used. He also started |
| and fueled the discussion about the analogy optional<>/smart pointer |
| and about relational operators. |
| </li> |
| <li class="listitem"> |
| Peter Dimov, Joel de Guzman, David Abrahams, Tanton Gibbs and Ian Hanson |
| focused on the relational semantics of optional (originally undefined); |
| concluding with the fact that the pointer-like interface doesn't make |
| it a pointer so it shall have deep relational operators. |
| </li> |
| <li class="listitem"> |
| Augustus Saunders also explored the different relational semantics between |
| optional<> and a pointer and developed the OptionalPointee concept |
| as an aid against potential conflicts on generic code. |
| </li> |
| <li class="listitem"> |
| Joel de Guzman noticed that optional<> can be seen as an API on |
| top of variant<T,nil_t>. |
| </li> |
| <li class="listitem"> |
| Dave Gomboc explained the meaning and usage of the Haskell analog to |
| optional<>: the Maybe type constructor (analogy originally pointed |
| out by David Sankel). |
| </li> |
| <li class="listitem"> |
| Other comments were posted by Vincent Finn, Anthony Williams, Ed Brey, |
| Rob Stewart, and others. |
| </li> |
| <li class="listitem"> |
| Joel de Guzman made the case for the support of references and helped |
| with the proper semantics. |
| </li> |
| <li class="listitem"> |
| Mat Marcus shown the virtues of a value-oriented interface, influencing |
| the current design, and contributed the idea of "none". |
| </li> |
| <li class="listitem"> |
| Vladimir Batov's design of Boost.Convert library motivated the development |
| of value accessors for <code class="computeroutput"><span class="identifier">optional</span></code>: |
| functions <code class="computeroutput"><span class="identifier">value</span></code>, <code class="computeroutput"><span class="identifier">value_or</span></code>, <code class="computeroutput"><span class="identifier">value_or_eval</span></code>. |
| </li> |
| </ul></div> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"></td> |
| <td align="right"><div class="copyright-footer">Copyright © 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright © 2014-2016 Andrzej Krzemieński<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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