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<div class="chapter" id="Structures">
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Next: <a href="Iteration-and-Tests.html" accesskey="n" rel="next">Iteration and Tests</a>, Previous: <a href="Operating-System.html" accesskey="p" rel="prev">Operating System</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Function-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p>
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<hr>
<span id="Structures-1"></span><h2 class="chapter">10 Structures</h2>
<dl class="def">
<dt id="index-DEFSTRUCT"><span class="category">Macro: </span><span><strong>DEFSTRUCT</strong><a href='#index-DEFSTRUCT' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Package:LISP
</p>
<p>Syntax:
</p><div class="example">
<pre class="example">(defstruct
{name | (name {:conc-name | (:conc-name prefix-string) |
:constructor | (:constructor symbol [lambda-list]) |
:copier | (:copier symbol) |
:predicate | (:predicate symbol) |
(:include symbol) |
(:print-function function) |
(:type {vector | (vector type) | list}) |
:named | (:static { nil | t})
(:initial-offset number)}*)}
[doc]
{slot-name |
(slot-name [default-value-form] {:type type | :read-only flag}*) }*
)
</pre></div>
<p>Defines a structure. The doc-string DOC, if supplied, is saved as a STRUCTURE
doc and can be retrieved by (documentation ’NAME ’structure).
STATIC is gcl specific and makes the body non relocatable.
</p>
<p>See the files misc/rusage.lsp misc/cstruct.lsp, for examples of making
a lisp structure correspond to a C structure.
</p>
</dd></dl>
<dl class="def">
<dt id="index-HELP"><span class="category">Function: </span><span><strong>HELP</strong> <em>(&optional symbol)</em><a href='#index-HELP' class='copiable-anchor'> ¶</a></span></dt>
<dd><p>Package:LISP
</p>
<p>GCL specific: Prints the documentation associated with SYMBOL. With no
argument, this function prints the greeting message to GCL beginners.
</p>
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