| <?xml version="1.0"?> |
| <concept name="Assignable" category="Utility"><!-- |
| Based on concepts from the SGI Standard Template Library documentation: |
| Copyright (c) 1996-1999 |
| Silicon Graphics Computer Systems, Inc. |
| |
| Copyright (c) 1994 |
| Hewlett-Packard Company |
| --><!-- |
| Copyright 2000-2001 University of Notre Dame du Lac. |
| Copyright 2001-2002 Indiana University. |
| Some concepts based on versions from the MTL draft manual and Boost Graph |
| and Property Map documentation: |
| Copyright (c) Jeremy Siek, Lie-Quan Lee, and Andrew Lumsdaine 2000 |
| --> |
| <param name="X" role="assignable-type"/> |
| |
| <models-sentence>The type <arg num="1"/> must be a model of <self/>.</models-sentence> |
| |
| <description> |
| <para>Assignable types must have copy constructors, |
| <code>operator=</code> for assignment, and the <code>swap()</code> |
| function defined.</para> |
| </description> |
| |
| <notation variables="x y"> |
| <sample-value> |
| <type name="X"/> |
| </sample-value> |
| </notation> |
| |
| <refines const="no" concept="CopyConstructible"/> |
| |
| <valid-expression name="Assignment"> |
| <assign> |
| <sample-value><reference-to><type name="X"/></reference-to></sample-value> |
| <sample-value><const><reference-to><type name="X"/></reference-to></const></sample-value> |
| </assign> |
| <return-type> |
| <require-same-type testable="yes"> |
| <reference-to><type name="X"/></reference-to> |
| </require-same-type> |
| </return-type> |
| <semantics>Require <code>operator=</code></semantics> |
| </valid-expression> |
| |
| <valid-expression name="Swap"> |
| <apply-function name="swap"> |
| <sample-value><reference-to><type name="X"/></reference-to></sample-value> |
| <sample-value><reference-to><type name="X"/></reference-to></sample-value> |
| </apply-function> |
| <return-type><require-same-type><type name="void"/></require-same-type></return-type> |
| <semantics>Require <code>swap()</code> function</semantics> |
| </valid-expression> |
| |
| <example-model> |
| <type name="int"/> |
| </example-model> |
| </concept> |