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25<div class="titlepage"><div><div><h3 class="title">
26<a name="boost_optional.reference.acknowledgements"></a><a class="link" href="acknowledgements.html" title="Acknowledgements">Acknowledgements</a>
27</h3></div></div></div>
28<h5>
29<a name="boost_optional.reference.acknowledgements.h0"></a>
30 <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
31 review</a>
32 </h5>
33<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
34<li class="listitem">
35 Peter Dimov suggested the name 'optional', and was the first to point
36 out the need for aligned storage.
37 </li>
38<li class="listitem">
39 Douglas Gregor developed 'type_with_alignment', and later Eric Friedman
40 coded 'aligned_storage', which are the core of the optional class implementation.
41 </li>
42<li class="listitem">
43 Andrei Alexandrescu and Brian Parker also worked with aligned storage
44 techniques and their work influenced the current implementation.
45 </li>
46<li class="listitem">
47 Gennadiy Rozental made extensive and important comments which shaped
48 the design.
49 </li>
50<li class="listitem">
51 Vesa Karvonen and Douglas Gregor made quite useful comparisons between
52 optional, variant and any; and made other relevant comments.
53 </li>
54<li class="listitem">
55 Douglas Gregor and Peter Dimov commented on comparisons and evaluation
56 in boolean contexts.
57 </li>
58<li class="listitem">
59 Eric Friedman helped understand the issues involved with aligned storage,
60 move/copy operations and exception safety.
61 </li>
62<li class="listitem">
63 Many others have participated with useful comments: Aleksey Gurotov,
64 Kevlin Henney, David Abrahams, and others I can't recall.
65 </li>
66</ul></div>
67<h5>
68<a name="boost_optional.reference.acknowledgements.h1"></a>
69 <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
70 review</a>
71 </h5>
72<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
73<li class="listitem">
74 William Kempf carefully considered the originally proposed interface
75 and suggested the new interface which is currently used. He also started
76 and fueled the discussion about the analogy optional&lt;&gt;/smart pointer
77 and about relational operators.
78 </li>
79<li class="listitem">
80 Peter Dimov, Joel de Guzman, David Abrahams, Tanton Gibbs and Ian Hanson
81 focused on the relational semantics of optional (originally undefined);
82 concluding with the fact that the pointer-like interface doesn't make
83 it a pointer so it shall have deep relational operators.
84 </li>
85<li class="listitem">
86 Augustus Saunders also explored the different relational semantics between
87 optional&lt;&gt; and a pointer and developed the OptionalPointee concept
88 as an aid against potential conflicts on generic code.
89 </li>
90<li class="listitem">
91 Joel de Guzman noticed that optional&lt;&gt; can be seen as an API on
92 top of variant&lt;T,nil_t&gt;.
93 </li>
94<li class="listitem">
95 Dave Gomboc explained the meaning and usage of the Haskell analog to
96 optional&lt;&gt;: the Maybe type constructor (analogy originally pointed
97 out by David Sankel).
98 </li>
99<li class="listitem">
100 Other comments were posted by Vincent Finn, Anthony Williams, Ed Brey,
101 Rob Stewart, and others.
102 </li>
103<li class="listitem">
104 Joel de Guzman made the case for the support of references and helped
105 with the proper semantics.
106 </li>
107<li class="listitem">
108 Mat Marcus shown the virtues of a value-oriented interface, influencing
109 the current design, and contributed the idea of "none".
110 </li>
111<li class="listitem">
112 Vladimir Batov's design of Boost.Convert library motivated the development
113 of value accessors for <code class="computeroutput"><span class="identifier">optional</span></code>:
114 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>.
115 </li>
116</ul></div>
117</div>
118<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
119<td align="left"></td>
120<td align="right"><div class="copyright-footer">Copyright &#169; 2003-2007 Fernando Luis Cacciola Carballal<br>Copyright &#169; 2014-2016 Andrzej Krzemie&#324;ski<p>
121 Distributed under the Boost Software License, Version 1.0. (See accompanying
122 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>)
123 </p>
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