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EqTable
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The EqTable domain provides tables where the keys are compared using
eq?.  Keys are considered equal only if they are the same instance of
a structure.  This is useful if the keys are themselves updatable
structures.  Otherwise, all operations are the same as for type Table.

The operation table is here used to create a table where the keys are
lists of integers. ::

  e: EqTable(List Integer, Integer) := table()
   table()
                    Type: EqTable(List Integer,Integer)

These two lists are equal according to =, but not according to eq?. ::

  l1 := [1,2,3]
   [1,2,3]
                    Type: List PositiveInteger

  l2 := [1,2,3]
   [1,2,3]
                    Type: List PositiveInteger
                    
Because the two lists are not eq?, separate values can be stored under
each. ::

  e.l1 := 111
   111
                    Type: PositiveInteger

  e.l2 := 222
   222
                    Type: PositiveInteger

  e.l1
   111
                    Type: PositiveInteger

See Also:

* ``)help Table``
* ``)show EqTable``