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7 <title>Writable Iterator Concept
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12 <h1 class=
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</h1>
14 <!-- Copyright David Abrahams 2006. Distributed under the Boost -->
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17 <p>A class or built-in type
<tt class=
"docutils literal"><span class=
"pre">X
</span></tt> models the
<em>Writable Iterator
</em> concept
18 if, in addition to
<tt class=
"docutils literal"><span class=
"pre">X
</span></tt> being Copy Constructible, the following
19 expressions are valid and respect the stated semantics. Writable
20 Iterators have an associated
<em>set of value types
</em>.
</p>
21 <table border=
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"docutils">
27 <thead valign=
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28 <tr><th class=
"head" colspan=
"3">Writable Iterator Requirements (in addition to Copy Constructible)
</th>
30 <tr><th class=
"head">Expression
</th>
31 <th class=
"head">Return Type
</th>
32 <th class=
"head">Precondition
</th>
36 <tr><td><tt class=
"docutils literal"><span class=
"pre">*a
</span> <span class=
"pre">=
</span> <span class=
"pre">o
</span></tt></td>
38 <td>pre: The type of
<tt class=
"docutils literal"><span class=
"pre">o
</span></tt>
40 value types of
<tt class=
"docutils literal"><span class=
"pre">X
</span></tt></td>
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