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Elixir

Atoms​

Strings​

Lists​

Tuples & Keyword Lists​

Maps​

Enum​

Pattern Matching​

Pin Operator​

If and unless​

Case​

Cond​

With​

Sigils​

Functions and pipes​

defmodule Xpto do
    
    @doc """
Sum of two values
"""
    def sum(val1, vale) do
        val1 + val2
    end

    def sum2(val1, val2), do: val1 + val2

    def get_key(key, opts \\ []) do
        deleted = Keyword.get(ops, :deleted)

    end
    
end

Pipe is a first class citizen

"Elixir rocks" |> String.upcase() |> String.split()

Modules​

defmodule Example do
    import Example.Helper

    cast_to_integer("1")
end

defmodule Example.Helper do
    def cast_to_integer(val) when is_binary(val) do

    end

    def cast_to_integer(val) when is_numeric(val) do
        val
    end

    def cast_to_integer(_) do
        nil
    end
end

Structs

defmodule MyApp.Vehicle do
    defstruct [:manufacturer, :model]
end

v = %Vehicle{manufacturer: "Audi", model:"A3"}

case v do
    %Vehicle{manufacturer: manufacturer} -> manufacturer
end

Metaprogramming​

Behaviours​

Comparável a interfaces. Permite definir um conjunto de funções devem ser implementadas 

@callback init(state :: term) :: ok

defmodule Example.Compressor do
@behaviour Example.Compressor

def perform(payload, opts) do
end
end
# Returns errors as there isn't an init function

Protocols​

Forma de aplicar polimorfismo

defmodule String.Chars, for Tuple do
    defstruct [:manufacture, ]

Mix​

Build tool para projetos de elixir

mix new example
cd example
mix deps.get
mix compile

mix test # test project

Programming Languages