MapNone

MapNone is a value used in programming, specifically in data structures like maps or dictionaries, to represent the absence of a value for a given key. Think of it as a placeholder indicating that a particular key has no associated data. It’s similar to a “null” or “empty” value used to distinguish between keys that are intentionally left empty versus those that have meaningful data. MapNone helps developers handle missing or optional data gracefully, preventing errors or misinterpretation when accessing such keys.