shahryarjb

iex(7)> map = %{name: "shahryar" , likes: "programming", where: "dallas"}
%{likes: "programming", name: "shahryar", where: "dallas"}
iex(8)> Map.keys map
[:likes, :name, :where]
iex(9)> Map.values map
["programming", "shahryar", "dallas"]
iex(10)> map[:name]
"shahryar"
iex(11)> map.name
"shahryar"

shahryarjb

iex(28)> person1 = %{ name: "shahryar" , height: 1.88}
%{height: 1.88, name: "shahryar"}
iex(29)> %{ name: a_name } = person1
%{height: 1.88, name: "shahryar"}
iex(30)> a_name
"shahryar"
iex(31)> %{ name: _ , height: _ } = person1
%{height: 1.88, name: "shahryar"}
iex(32)> %{ name: "shahryar" } = person1
%{height: 1.88, name: "shahryar"}

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir

people = [
  %{ name: "Grumpy",    height: 1.24 },
  %{ name: "Dave",      height: 1.88 },
  %{ name: "Dopey",     height: 1.32 },
  %{ name: "Shaquille", height: 2.16 },
  %{ name: "Sneezy",    height: 1.28 }
]

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir
defmodule Subscriber do
  defstruct name: "", paid: false, over_18: true
end


iex(1)> s1 = %Subscriber{name: "shahryar" }
%Subscriber{name: "shahryar", over_18: true, paid: false}
iex(2)> s2 = %Subscriber{name: "ruby" , over_18: false }

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir

defmodule Attendee do
  defstruct name: "", paid: false, over_18: true

  def may_attend_after_party(attendee = %Attendee{}) do
    attendee.paid && attendee.over_18
  end

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir

defmodule Customer do
  defstruct name: "", company: ""
end

defmodule BugReport do
  defstruct owner: %Customer{}, details: "", severity: 1
end

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir
nested = %{
    buttercup: %{ 
      actor: %{
        first: "Robin",
        last:  "Wright"
      },
      role: "princess"
    },

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir

authors = [
  %{ name: "José",  language: "Elixir" },
  %{ name: "Matz",  language: "Ruby" },
  %{ name: "Larry", language: "Perl" }
]

languages_with_an_r = fn (:get, collection, next_fn) ->

shahryarjb

# my blog  : https://trangell.com/fa/
# public : http://iranonrails.ir

cast = [
  %{
    character: "Buttercup",
    actor: %{
      first: "Robin",
      last:  "Wright"
    },

shahryarjb

iex(3)> set1 = 1..5 |>
...(3)> Enum.into(MapSet.new)
#MapSet<[1, 2, 3, 4, 5]>
iex(4)> MapSet.member? set1, 3
true
iex(5)> MapSet.member? set1, 6
false
iex(6)> set2 = 3..8 |> Enum.into(MapSet.new)
#MapSet<[3, 4, 5, 6, 7, 8]>
iex(7)> MapSet.union set1 , set2