Map Sorter v0.2.12 MapSorter View Source
Sorts a list of maps
as per a list of sort specs
(ascending/descending keys).
Also supports:
- keywords
- structs implementing the Access behaviour
- nested maps, keywords or structs implementing the Access behaviour
Link to this section Summary
Functions
Sorts maps
as per the given sort specs
(compile time or runtime)
Link to this section Functions
Sorts maps
as per the given sort specs
(compile time or runtime).
Examples of sort specs
for flat data structures:
- implicit: [:dob, :name] ≡ [asc: :dob, asc: :name]
- mixed: [:dob, desc: :name] ≡ [asc: :dob, desc: :name]
- explicit: [asc: :dob, desc: :name]
Examples of sort specs
for nested data structures:
- implicit: [[:birth, :date], :name]
- mixed: [[:birth, :date], desc: :name]
- explicit: [asc: [:birth, :date], desc: :name]
Examples
iex> require MapSorter
iex> people = [
...> %{name: "Mike", likes: "movies" , dob: "1992-04-15"},
...> %{name: "Mary", likes: "travels", dob: "1992-04-15"},
...> %{name: "Bill", likes: "karate" , dob: "1977-08-28"},
...> %{name: "Joe" , likes: "boxing" , dob: "1977-08-28"},
...> %{name: "Jill", likes: "cooking", dob: "1976-09-28"}
...> ]
iex> sort_specs = [:dob, desc: :likes]
iex> sorted_people = %{
...> explicit: MapSorter.sort(people, asc: :dob, desc: :likes),
...> mixed: MapSorter.sort(people, [:dob, desc: :likes]),
...> runtime: MapSorter.sort(people, sort_specs)
...> }
iex> sorted_people.explicit == sorted_people.mixed and
...> sorted_people.explicit == sorted_people.runtime and
...> sorted_people.explicit
[
%{name: "Jill", likes: "cooking", dob: "1976-09-28"},
%{name: "Bill", likes: "karate" , dob: "1977-08-28"},
%{name: "Joe" , likes: "boxing" , dob: "1977-08-28"},
%{name: "Mary", likes: "travels", dob: "1992-04-15"},
%{name: "Mike", likes: "movies" , dob: "1992-04-15"}
]