Convert a list resulting from the summaries performed in a
summaryFunction into a summaryResult object, thereby
supplying it with a print() method.
summaryResult(ls)A list with entries $feature (a character string describing
what summary was obtained), $result (the result of the summary, either
a value from the variable, a numeric or a character string) and
$value (the result in its most raw format, often identical to the
$result input).
A S3 object of class summaryResult, identical to the inputted
list, ls, except for its class attribute.