How to Sort a Map By Value In Elixir

sort_map_by_value_example.ex

# I couldn't find this easily in the documentation or on Google.
# Here's how you sort a map in Elixir.
# Maps aren't a sorted structure, so the result is a keyword list.

input = %{
  player_1: %{score: 2}, 
  player_2: %{score: 1},
  player_3: %{score: 10}
  player_4: %{score: 5}
}

# sort_by is ascending by default
#[
#  player_2: %{score: 1},
#  player_1: %{score: 2},
#  player_4: %{score: 5},
#  player_3: %{score: 10}
#]
Enum.sort_by(input, fn {_k, v} -> v.score end)

# use :desc to reverse
#[
#  player_3: %{score: 10},
#  player_4: %{score: 5},
#  player_1: %{score: 2},
#  player_2: %{score: 1}
#]
Enum.sort_by(input, fn {_k, v} -> v.score end, :desc)

# Easy peasy!