82 lines
3.3 KiB
HTML
82 lines
3.3 KiB
HTML
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<!-- This manual documents Guile version 3.0.10.
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Copyright (C) 1996-1997, 2000-2005, 2009-2023 Free Software Foundation,
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Copyright (C) 2021 Maxime Devos
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Copyright (C) 2024 Tomas Volf
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<title>Sorting Methods (Guile Reference Manual)</title>
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<link href="Concept-Index.html" rel="index" title="Concept Index">
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<div class="subsection-level-extent" id="Sorting-Methods">
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Previous: <a href="Class-Precedence-List.html" accesskey="p" rel="prev">Class Precedence List</a>, Up: <a href="Inheritance.html" accesskey="u" rel="up">Inheritance</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h4 class="subsection" id="Sorting-Methods-1"><span>8.7.2 Sorting Methods<a class="copiable-link" href="#Sorting-Methods-1"> ¶</a></span></h4>
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<p>Now, with the idea of the class precedence list, we can state precisely
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how the possible methods are sorted when more than one of the methods of
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a generic function are applicable to the call arguments.
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</p>
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<p>The rules are that
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</p><ul class="itemize mark-bullet">
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<li>the applicable methods are sorted in order of specificity, and the most
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specific method is used first, then the next if that method calls
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<code class="code">next-method</code>, and so on
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</li><li>a method M1 is more specific than another method M2 if the first
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specializing class that differs, between the definitions of M1 and M2,
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is more specific, in M1’s definition, for the corresponding actual call
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argument, than the specializing class in M2’s definition
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</li><li>a class C1 is more specific than another class C2, for an object of
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actual class C, if C1 comes before C2 in C’s class precedence list.
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</li></ul>
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