17.2 IsUnknown

IsUnknown( obj )

returns true if obj is an object of type unknown, and false otherwise. Will signal an error if obj is an unbound variable.

    gap> IsUnknown( Unknown ); IsUnknown( Unknown() );
    false
    true
    gap> IsUnknown( Unknown(2) );
    true

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GAP 3.4.4
April 1997