the function from component trace to value
the default value
the default value
the function from component trace to value
Return the sum of the values given by the function to a partial component trace
Return the sum of the values given by the function to a partial component trace
possibly partial component trace
values type is Numeric
sum of the values if exists, otherwise the default value
Return the first value given by the function to a possibly partial component trace
Return the first value given by the function to a possibly partial component trace
possibly partial component trace
first value, otherwise the default value
Case class encoding a partial function over component traces
the type of return values
the function from component trace to value
the default value