I have a list of Person objects. Each Person object has an int id property, along with some others. Currently my list of Person objects has multiple objects with the same id. I want to filter the list so each id only exists at most once in the list.

E.g. a list of

Person(1),
Person(1),
Person(2),
Person(2),
Person(3),
Person(1)

should look like

Person(1),
Person(2),
Person(3)

In ruby this is simply personList.uniq { |person| person.id }