Elixir

IO.puts "Hello, World!"

δ = 0.00001

raise "oops, something went wrong"

def fib(0), do: 1
def fib(1), do: 1
def fib(n) when n >= 2, do: fib(n-1) + fib(n-2)

def abs(number) when number > 0, do: number
def abs(number), do: -number

template = """
This is the first line.
This is the second line.
This is the third line.
"""

seven = 3 + 4

1.23e45

fn -> IO.puts("hello world") end

"Elixir" |> String.graphemes() |> Enum.frequencies()

https://hexdocs.pm/elixir/Stream.html

# https://hexdocs.pm/elixir/Macro.html
defmodule Example do
  defmacro macro_inspect(value) do
    IO.inspect(value)
    value
  end
  def fun_inspect(value) do
    IO.inspect(value)
    value
  end
end

https://hexdocs.pm/elixir/Protocol.html

1..3

%{key: "value"}

# 0b[01]+

# \d(_?\d)*

# \d(_?\d)*\.\d(_?\d)*([eE][-+]?\d(_?\d)*)?

# 0x[\da-fA-F]+

# 0o[0-7]+

"Hello world"

my_list = [1, 2, 3, 4, 5]

~r/integer: \d+/

send(pid, :ping)

# A comment

def multiply(a, b \\ 1) do
  a * b
end

if true do
  IO.puts("Hello world")
end

name = "John"

# Alias the module so it can be called as Bar instead of Foo.Bar
alias Foo.Bar, as: Bar

# Require the module in order to use its macros
require Foo

# Import functions from Foo so they can be called without the `Foo.` prefix
import Foo

# Invokes the custom code defined in Foo as an extension point
use Foo

# A comment

File.write!("helloworld.txt", "Hello, world!\n")

#!/usr/bin/env elixir