@T10:30:31=@T10:30 //False, should be { }
@T10:30:31~@T10:30 //True, should be { }
{ } = ‘a’ // True, should be { }
@2012-01 = @2012 // False, should be { }
@2012-01 ~ @2012 // True, should be False
@2012-01-01T10:30 = @2012-01-01T10:30 //syntax error, should be True
@2012-01-01T10:30 = @2012-01-01T10:31 //syntax error, should be False
@2012-01-01T10:30:31 = @2012-01-01T10:30 //syntax error, should be { }
The following expressions return results different to what I expect from the docco at http://hl7.org/fhirpath/#operations