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<b>Data Structures and Algorithms
with Object-Oriented Design Patterns in C++</b><br>
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<H2><A NAME="SECTION005250000000000000000">Accessors</A></H2>
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Three <tt>LinkedList<T></tt> class member variable accessors are
defined in Program <A HREF="page93.html#proglinklist3c" tppabs="http://dictator.uwaterloo.ca/Bruno.Preiss/books/opus4/html/page93.html#proglinklist3c"><IMG ALIGN=BOTTOM ALT="gif" SRC="cross_ref_motif.gif" tppabs="http://dictator.uwaterloo.ca/Bruno.Preiss/books/opus4/icons/cross_ref_motif.gif"></A>.
The member functions <tt>Head</tt> and <tt>Tail</tt>
provide read-only access to the corresponding data members
of <tt>LinkedList<T></tt>.
The function <tt>IsEmpty</tt> returns a Boolean result
which indicates whether the list is empty.
Clearly, the running time of the of the accessors is <I>O</I>(1).
<P>
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<STRONG>Program:</STRONG> <tt>LinkedList<T></tt> Class Accessor Function Definitions<BR>
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