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| <td class="back"><a id="top"></a><a href="s2.1.c.html" rel="prev"><< §2.1.(c) Covariant refinement</a></td> |
| <td class="top"><a href="index.html" rel="contents">↑ Table of Contents ↑</a></td> |
| <td class="next"><a href="s2.1.e.html" rel="next">§2.1.(e) Use of playedBy bindings >></a></td> |
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| <div class="breadcrumb"><a class="nav" href="s2.html" rel="section">§2 Role Binding</a> > <a class="nav" href="s2.1.html" rel="section">§2.1 playedBy relation</a></div> |
| <div class="subsect depth3" id="s2.1.d"> |
| <h4 class="subsect">§2.1.(d) <span class="title">No-variance</span><a class="img" href="s2.1.d.html" title="PermaLink to (d) No-variance"><img style="vertical-align:text-top;margin-left:5px;" src="../images/permalink.png" |
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| <p>An <em>implicit</em> sub-role (according to <a href="s1.3.1.c.html" |
| title="§1.3.1.(c) Overriding and implicit inheritance" |
| class="sect">§1.3.1.(c)</a>) |
| may only add a <code>playedBy</code> relation but never change an existing one.<br /> |
| Note however, that implicit inheritance may implicitly specialize an existing <code>playedBy</code> |
| relation (this advanced situation is illustrated in <a href="s2.7.d.html" |
| title="§2.7.(d) Implicit playedBy specialization" |
| class="sect">§2.7.(d)</a>). |
| |
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| <td class="back"><a href="s2.1.c.html" rel="prev"><< §2.1.(c) Covariant refinement</a></td> |
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| <td class="next"><a href="s2.1.e.html" rel="next">§2.1.(e) Use of playedBy bindings >></a></td> |
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| <div class="breadcrumb"><a class="nav" href="s2.html" rel="section">§2 Role Binding</a> > <a class="nav" href="s2.1.html" rel="section">§2.1 playedBy relation</a></div> |
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| width="88" /></a><address>© Stephan Herrmann, Christine Hundt, Marco Mosconi</address> |
| OT/J version 1.3 — last modified: 2011-05-12 |
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