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<a name="Introduction-to-Lists"></a>
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<p>
Next: <a href="maxima_21.html#Functions-and-Variables-for-Lists" accesskey="n" rel="next">Functions and Variables for Lists</a>, Previous: <a href="maxima_19.html#Lists" accesskey="p" rel="previous">Lists</a>, Up: <a href="maxima_19.html#Lists" accesskey="u" rel="up">Lists</a> [<a href="maxima_toc.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="maxima_423.html#Function-and-Variable-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Introduction-to-Lists-1"></a>
<h4 class="subsection">5.4.1 Introduction to Lists</h4>
<p>Lists are the basic building block for Maxima and Lisp. All data types
other than arrays, <code><a href="maxima_23.html#hashed-arrays">hashed arrays</a></code> and numbers are represented as Lisp lists,
These Lisp lists have the form
</p>
<div class="example">
<pre class="example">((MPLUS) $A 2)
</pre></div>
<p>to indicate an expression <code>a+2</code>. At Maxima level one would see
the infix notation <code>a+2</code>. Maxima also has lists which are printed
as
</p>
<div class="example">
<pre class="example">[1, 2, 7, x+y]
</pre></div>
<p>for a list with 4 elements. Internally this corresponds to a Lisp list
of the form
</p>
<div class="example">
<pre class="example">((MLIST) 1 2 7 ((MPLUS) $X $Y))
</pre></div>
<p>The flag which denotes the type field of the Maxima expression is a list
itself, since after it has been through the simplifier the list would become
</p>
<div class="example">
<pre class="example">((MLIST SIMP) 1 2 7 ((MPLUS SIMP) $X $Y))
</pre></div>
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Next: <a href="maxima_21.html#Functions-and-Variables-for-Lists" accesskey="n" rel="next">Functions and Variables for Lists</a>, Previous: <a href="maxima_19.html#Lists" accesskey="p" rel="previous">Lists</a>, Up: <a href="maxima_19.html#Lists" accesskey="u" rel="up">Lists</a> [<a href="maxima_toc.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="maxima_423.html#Function-and-Variable-Index" title="Index" rel="index">Index</a>]</p>
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