MapgetOrDefaultkey
MapgetOrDefaultkey is a descriptive name sometimes used to refer to the "get-or-default" operation on map-like containers: retrieving the value associated with a given key, or returning a supplied default when the key is not present. The pattern appears across many programming languages and libraries; for example, Java's Map.getOrDefault(key, defaultValue) and Python's dict.get(key, default) implement this behavior.
Typical semantics are non-mutating: the map is not modified when a default is returned. This distinguishes get-or-default
Common use cases include providing fallback values, handling optional configuration entries, and simplifying aggregation logic. Important