A one item collection is admittedly a lame one, but it is a collection. Pointers are collections of zero or one items in a sense.
Now, the verb "map" is the traditional name for this operator, but I agree it sounds confusing when the noun "map" is also a collection type. C# and SQL call this Select, if that helps.
Now, the verb "map" is the traditional name for this operator, but I agree it sounds confusing when the noun "map" is also a collection type. C# and SQL call this Select, if that helps.