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Class simset.Head 

java.lang.Object
   |
   +----simset.Linkage
           |
           +----simset.Head
public class Head
extends simset.Linkage
This class is used for representing circular two-way lists.

Items in a list are represented by objects of class Link, or more usefully, subclasses of Link.

See Also:
simset.Link, simset.Linkage

Constructor Index

o Head()

Method Index

o cardinal()
Returns the number of items currently in this list.
o clear()
Removes all items from this list.
o empty()
Tests if this list is empty.
o first()
Returns the first item in this list.
o last()
Returns the last item in this list.

Constructors

o Head 
 public Head()

Methods

o first 
 public final simset.Link first()
Returns the first item in this list.

Returns:
The first item.
o last 
 public final simset.Link last()
Returns the last item in this list.

Returns:
The last item.
o empty 
 public final boolean empty()
Tests if this list is empty.

Returns:
true, if this list is empty; false otherwise.
o cardinal 
 public final int cardinal()
Returns the number of items currently in this list.

Returns:
The number of items.
o clear 
 public final void clear()
Removes all items from this list. 

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