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<title data-rh="true">compute-applicable-methods | Common Lisp (New) Language Reference</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:image" content="https://lisp-docs.github.io/cl-language-reference/img/1024px-Lisp_logo.svg.png"><meta data-rh="true" name="twitter:image" content="https://lisp-docs.github.io/cl-language-reference/img/1024px-Lisp_logo.svg.png"><meta data-rh="true" property="og:url" content="https://lisp-docs.github.io/cl-language-reference/meta-object-protocol/dictionary/compute-applicable-methods"><meta data-rh="true" property="og:locale" content="en"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="google-site-verification" content="Vzaw013_bfdKeUVG89Ch3W1zC9_vH9ID2dPB9Dz0vr0"><meta data-rh="true" name="docusaurus_version" content="current"><meta data-rh="true" name="docusaurus_tag" content="docs-default-current"><meta data-rh="true" name="docsearch:version" content="current"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-current"><meta data-rh="true" property="og:title" content="compute-applicable-methods | Common Lisp (New) Language Reference"><meta data-rh="true" name="description" content="Generic Function COMPUTE-APPLICABLE-METHODS"><meta data-rh="true" property="og:description" content="Generic Function COMPUTE-APPLICABLE-METHODS"><link data-rh="true" rel="icon" href="../../img/favicon.ico"><link data-rh="true" rel="canonical" href="compute-applicable-methods.html"><link data-rh="true" rel="alternate" href="compute-applicable-methods.html" hreflang="en"><link data-rh="true" rel="alternate" href="compute-applicable-methods.html" hreflang="x-default"><link data-rh="true" rel="preconnect" href="https://C1F2Q5VM6X-dsn.algolia.net" crossorigin="anonymous"><link rel="preconnect" href="https://www.google-analytics.com">
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<p><em>Generic Function</em> <strong>COMPUTE-APPLICABLE-METHODS</strong></p>
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<p><strong>Syntax:</strong></p>
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<p><strong>compute-applicable-methods</strong> <em>generic-function</em> <em>arguments</em> => <em>methods</em></p>
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<p><strong>Arguments and values:</strong></p>
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<p><em>generic-function</em> -- A generic function metaobject.</p>
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<p><em>arguments</em> -- A list of objects.</p>
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<p><em>methods</em> -- A (possibly empty) list of method metaobjects.</p>
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<p><strong>Description:</strong></p>
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<p>This generic function determines the method applicability of a generic function given a list of required arguments. The returned list of method metaobjects is sorted by precedence order with the most specific method appearing first. If no methods are applicable to the supplied arguments the empty list is returned.</p>
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<p>When a generic function is invoked, the discriminating function must determine the ordered list of methods applicable to the arguments. Depending on the generic function and the arguments, this is done in one of three ways: using a memoized value; calling<a href="https://lisp-docs.github.io/cl-language-reference/meta-object-protocol/compute-applicable-methods-using-classes">compute-applicable-methods-using-classes</a>; or calling <strong>compute-applicable-methods</strong>. (Refer to the description of <a href="https://lisp-docs.github.io/cl-language-reference/meta-object-protocol/compute-discriminating-function">compute-discriminating-function</a> for the details of this process.)</p>
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<p>The <em>arguments</em> argument is permitted to contain more elements than the generic function accepts required arguments; in these cases the extra arguments will be ignored. An error is signaled if <em>arguments</em> contains fewer elements than the generic function accepts required arguments.</p>
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<p>The list returned by this generic function will not be mutated by the implementation. The results are undefined if a portable program mutates the list returned by this generic function.</p>
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<p><strong>Methods:</strong></p>
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<hr>
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<h2 class="anchor anchorWithStickyNavbar_LWe7" id="compute-applicable-methods-generic-function-standard-generic-function-arguments"><a href="https://lisp-docs.github.io/cl-language-reference/meta-object-protocol/compute-applicable-methods-standard-generic-function"><strong>compute-applicable-methods</strong> (<em>generic-function</em> standard-generic-function) <em>arguments</em></a><a href="compute-applicable-methods.html#compute-applicable-methods-generic-function-standard-generic-function-arguments" class="hash-link" aria-label="Direct link to compute-applicable-methods-generic-function-standard-generic-function-arguments" title="Direct link to compute-applicable-methods-generic-function-standard-generic-function-arguments"></a></h2></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class="col"><a href="https://github.com/lisp-docs/cl-language-reference/tree/main/docs/meta-object-protocol/dictionary/compute-applicable-methods.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_vwxv"><span class="theme-last-updated">Last updated<!-- --> by <b>daninus14</b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="compute-applicable-methods-using-classes.html"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">compute-applicable-methods-using-classes</div></a><a class="pagination-nav__link pagination-nav__link--next" href="compute-class-precedence-list-class.html"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">compute-class-precedence-list-class</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="compute-applicable-methods.html#compute-applicable-methods-generic-function-standard-generic-function-arguments" class="table-of-contents__link toc-highlight"><strong>compute-applicable-methods</strong> (<em>generic-function</em> standard-generic-function) <em>arguments</em></a></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Docs</div><ul class="footer__items clean-list"><li class="footer__item"><a href="../../../docs/tutorial.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Common Lisp Tutorial</a></li><li class="footer__item"><a href="../../index.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Common Lisp Technical Reference</a></li><li class="footer__item"><a href="../../../docs/help.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Help</a></li></ul></div><div class="col footer__col"><div class="footer__title">Community</div><ul class="footer__items clean-list"><li class="footer__item"><a href="https://stackoverflow.com/questions/tagged/common-lisp" target="_blank" rel="noopener noreferrer" class="footer__link-item">Stack Overflow<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li class="footer__item"><a href="https://discord.gg/hhk46CE" target="_blank" rel="noopener noreferrer" class="footer__link-item">Discord<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d
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