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<concept id="GUID-6006AAB0-B319-546F-8D79-E2D4887A1E72" xml:lang="en"><title>Singly

linked lists</title><shortdesc>A singly linked list is one where each element points forwards

to the next element.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>Unlike a doubly linked list, elements do <i>not</i> point back to the previous

element. The list has an anchor point which points forwards to the first element

and also has a pointer to the last element.</p>

<p>Anchor points are always referred to as <i>headers</i>.</p>

<p>A singly linked list is useful for maintaining a non-circular queue of

items; for example, a stack.</p>

<fig id="GUID-8FC485D1-5B95-5B71-94F1-00C78A61F7F0">

<title>Singly linked list</title>

<image href="GUID-25CBA151-ED8E-5A88-A9FD-F20810371B4D_d0e316032_href.png" placement="inline"/>

</fig>

<p>Singly linked lists involve the creation and use of the classes:</p>

<ul>

<li id="GUID-8D31B03F-8978-5292-BE6E-4D3C0EE62460"><p><codeph>TSglQueLink</codeph> </p> </li>

<li id="GUID-547C604A-1F01-5FF7-A316-8F09EE9462EC"><p><codeph>TSglQue&lt;class

T&gt;</codeph> </p> </li>

<li id="GUID-E567AD7E-DB54-54B9-8C1E-5C9A36B1C927"><p><codeph>TSglQueIter&lt;class

T</codeph> </p> </li>

</ul>

<p>In practice, these classes are almost always used as components of other

classes.</p>