Function Dot Notation

Section

defmodule Parent.Child1.Child2 do
  def callback(function, parameter) do
    function.(parameter)
  end

  def hello(name) do
    "Hello #{name}!"
  end

  def my_function do
    1
  end
end

:atom

[right: 1]

[{:left, 1}]

defmodule Test do
  def function(opts) do
    IO.inspect(opts)
  end
end

Test.function([{:right, 1}])

# keyword lists
[{:key, "value"}] == [key: "value"]

# Encourage Idiomatic Use/ Provide Syntax Sugar
# Safe Data/Trusted Data
%{
  key: "value"
}

# not trusted
%{
  "key" => "value"
}

%{
  :key => "value"
}

defmodule Test do
  def hello(name) do
    "Hello #{name}!"
  end
end

Test.hello("Bill!") |> IO.inspect()
Test.hello("Zeshhaan!") |> IO.inspect()
Test.hello("Icia!") |> IO.inspect()
Test.hello(2) |> IO.inspect()
Test.hello(3) |> IO.inspect()
Test.hello(4) |> IO.inspect()

"Concatenation" <> " Hello!"

name = "4"
my_weird_string = "Interpolation #{[73, 74]}"

my_weird_string <> "Bob"

'IJ'

10

?z

?A..?z

'ABC' == [65, 66, 67]

"ABC" == [65, 66, 67]