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5 | <meta http-equiv="Content-Language" content="en-us"> | |
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7 | ||
8 | <title>Assignable</title> | |
9 | </head> | |
10 | ||
11 | <body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink= | |
12 | "#FF0000"> | |
13 | <img src="../../boost.png" alt="C++ Boost" width="277" height= | |
14 | "86"><br clear="none"> | |
15 | ||
16 | <h1>Assignable</h1> | |
17 | ||
18 | <h3>Description</h3> | |
19 | ||
20 | <p>A type is Assignable if it is possible to assign one object of the type | |
21 | to another object of that type.</p> | |
22 | ||
23 | <h3>Notation</h3> | |
24 | ||
25 | <table summary=""> | |
26 | <tr> | |
27 | <td valign="top"><tt>T</tt></td> | |
28 | ||
29 | <td valign="top">is type that is a model of Assignable</td> | |
30 | </tr> | |
31 | ||
32 | <tr> | |
33 | <td valign="top"><tt>t</tt></td> | |
34 | ||
35 | <td valign="top">is an object of type <tt>T</tt></td> | |
36 | </tr> | |
37 | ||
38 | <tr> | |
39 | <td valign="top"><tt>u</tt></td> | |
40 | ||
41 | <td valign="top">is an object of type <tt>T</tt> or possibly <tt>const | |
42 | T</tt></td> | |
43 | </tr> | |
44 | </table> | |
45 | ||
46 | <h3>Definitions</h3> | |
47 | ||
48 | <h3>Valid expressions</h3> | |
49 | ||
50 | <table border summary=""> | |
51 | <tr> | |
52 | <th>Name</th> | |
53 | ||
54 | <th>Expression</th> | |
55 | ||
56 | <th>Return type</th> | |
57 | ||
58 | <th>Semantics</th> | |
59 | </tr> | |
60 | ||
61 | <tr> | |
62 | <td valign="top">Assignment</td> | |
63 | ||
64 | <td valign="top"><tt>t = u</tt></td> | |
65 | ||
66 | <td valign="top"><tt>T&</tt></td> | |
67 | ||
68 | <td valign="top"><tt>t</tt> is equivalent to <tt>u</tt></td> | |
69 | </tr> | |
70 | </table> | |
71 | ||
72 | <h3>Models</h3> | |
73 | ||
74 | <ul> | |
75 | <li><tt>int</tt></li> | |
76 | ||
77 | <li><tt>std::pair</tt></li> | |
78 | </ul> | |
79 | ||
80 | <h3>See also</h3> | |
81 | ||
82 | <p><a href= | |
83 | "http://www.sgi.com/tech/stl/DefaultConstructible.html">DefaultConstructible</a> | |
84 | and <a href="./CopyConstructible.html">CopyConstructible</a><br></p> | |
85 | <hr> | |
86 | ||
87 | <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src= | |
88 | "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional" | |
89 | height="31" width="88"></a></p> | |
90 | ||
91 | <p>Revised | |
92 | <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05 December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p> | |
93 | ||
94 | <table summary=""> | |
95 | <tr valign="top"> | |
96 | <td nowrap><i>Copyright © 2000</i></td> | |
97 | ||
98 | <td><i><a href="http://www.lsc.nd.edu/~jsiek">Jeremy Siek</a>, Univ.of | |
99 | Notre Dame (<a href= | |
100 | "mailto:jsiek@lsc.nd.edu">jsiek@lsc.nd.edu</a>)</i></td> | |
101 | </tr> | |
102 | </table> | |
103 | ||
104 | <p><i>Distributed under the Boost Software License, Version 1.0. (See | |
105 | accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or | |
106 | copy at <a href= | |
107 | "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p> | |
108 | </body> | |
109 | </html> |