Elixir library extending Enum.min_by/2, Enum.max_by/2 and Enum.min_max_by/2 to return a list of results instead of just one.
This enables searching for all matching results based multiple min/max value criteria. See Examples.
API documentation is available at http://hexdocs.pm/minmaxlist
To use Minmaxlist with your projects, edit your mix.exs file and add it as a dependency:
defp deps do
[
{:minmaxlist, "~> x.x.x"},
]
endMinmaxlist is designed to assist in filtering result sets by min/max value while returning list of results that matches the requirement. This is especially useful for example,
Find the youngest people with highest income.
import Minmaxlist
[
%{name: "A", age: 24, income: 4000},
%{name: "B", age: 22, income: 3300},
%{name: "C", age: 22, income: 2800},
%{name: "D", age: 25, income: 5000},
%{name: "E", age: 22, income: 3300},
%{name: "F", age: 25, income: 5500},
%{name: "G", age: 24, income: 4500},
] |> min_list_by(&(&1.age)) |> max_list_by(&(&1.income))
# => [%{name: "B", age: 22, income: 3300}, %{name: "E", age: 22, income: 3300}]Find the youngest and oldest people,
import Minmaxlist
[
%{name: "A", age: 24, income: 4000},
%{name: "B", age: 22, income: 3300},
%{name: "C", age: 22, income: 2800},
%{name: "D", age: 25, income: 5000},
%{name: "E", age: 22, income: 3300},
%{name: "F", age: 25, income: 5500},
%{name: "G", age: 24, income: 4500},
] |> min_max_list_by(&(&1.age))
# => {
# [%{name: "B", age: 22, income: 3300}, %{name: "C", age: 22, income: 2800}, %{name: "E", age: 22, income: 3300}],
# [%{name: "D", age: 25, income: 5000}, %{name: "F", age: 25, income: 5500}]
# }This software is licensed under MIT License.