RealmCollection Extension Reference

min()

Returns the minimum (lowest) value of the collection, or nil if the collection is empty.
max()

Returns the maximum (highest) value of the collection, or nil if the collection is empty.

sum()

Returns the sum of the values in the collection, or nil if the collection is empty.
average()

Returns the average of all of the values in the collection.

sorted(ascending:)

Returns a Results containing the objects in the collection, but sorted.

Objects are sorted based on their values. For example, to sort a collection of Dates from neweset to oldest based, you might call dates.sorted(ascending: true).