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<p><em>Function</em> <strong>EXTRACT-SPECIALIZER-NAMES</strong></p>
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<p><strong>Syntax:</strong></p>
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<p><strong>extract-specializer-names</strong> <em>specialized-lambda-list</em> => <em>specializer-names</em></p>
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<p><strong>Arguments and values:</strong></p>
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<p><em>specialized-lambda-list</em> -- A specialized lambda list as accepted by <code>defmethod</code>.</p>
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<p><em>specializer-names</em> -- A list of specializer names.</p>
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<p><strong>Description:</strong></p>
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<p>This function takes a specialized lambda list and returns its specializer names. This is a non-destructive operation. Whether the result shares structure with the argument is unspecified. The results are undefined if the result of this function is modified.</p>
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<p>The result of this function will be a list with a number of elements equal to the number of required arguments in <em>specialized-lambda-list</em>. Specializers are defaulted to the symbol <code>t</code>.</p>
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<p>If the <em>specialized-lambda-list</em> argument does not have legal syntax, an error is signaled. This syntax checking does not check the syntax of the actual specializer names, only the syntax of the lambda list and where the specializers appear.</p>
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<p><strong>Examples:</strong></p>
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<p>(extract-specializer-names '((p position))) ==> (POSITION)</p>
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<p>(extract-specializer-names '((p position) x y)) ==> (POSITION T T)</p>
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<p>(extract-specializer-names '(a (b (eql x)) c &rest i)) ==> (T (EQL X) T)</p></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/extract-specializer-names.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="extract-lambda-list.html"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">extract-lambda-list</div></a><a class="pagination-nav__link pagination-nav__link--next" href="fig-defmethod-1.html"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">defmethod expansion</div></a></nav></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="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://www.reddit.com/r/common_lisp" target="_blank" rel="noopener noreferrer" class="footer__link-item">Reddit<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://irclog.tymoon.eu/libera/commonlisp" target="_blank" rel="noopener noreferrer" class="footer__link-item">IRC<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></ul></div><div class="col footer__col"><div class="footer__title">More</div><ul class="footer__items clean-list"><li class="footer__item"><a href="../../../blog.html" target="_blank" rel="noopener noreferrer" class="footer__link-item">Blog</a></li
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