TupleMap returns a Tuple with each value replaced by the result of each function.

TupleOf creates a Tuple of (v, v2, v3, v4).

TupleResultOf creates a result.Result of either (v, v2, v3, v4) or err.

TupleValueOf creates an optional.Value of (v, v2, v3, v4) if ok is true.

Tuple contains four values.