MaybeTypen
MaybeTypen is a theoretical construct in type theory and programming language design that generalizes optional types to support optional values along with additional context about provenance or usage. It is intended as a flexible abstraction for modeling computations that may yield a value or may be absent, while enabling static reasoning about how absence originated or should be handled.
A MaybeTypen is typically parameterized by a contained type T and a provenance annotation M. The canonical
Operations on MaybeTypen mirror those of other optional or maybe types. Common operations include map, which
Examples are expressed in pseudo-code: maybeInt = Present(42); maybeInt' = map(maybeInt, f); value = getOrElse(maybeInt, 0). If Absent, map
See also: Maybe/Option type, Result/Either type, Nullable types, Monads, Null safety concepts.