MATH.16:5.2 - Process both results or either result

One calculation returns an integer count; another returns a text label. A report containing both results needs a product. Its projections recover the count and the label, and the two values determine the report.

A different interface accepts either an integer count or a text label. It must display a count numerically and leave a text label as supplied. A tagged union, the coproduct of these sets, allows both handlers to determine one display function. An input tagged as a count follows the numeric handler; a text-tagged input follows the text handler.

The word “combine” did not decide which object to build. The question about formation and use did: recover two components from one report, or process either input through its own rule. These constructions describe values and functions. Whether executing the calculations reads or changes shared state is a further question about their execution.