radik909

defmodule Prime do
  @moduledoc """
    A number 'n' is prime only when it is not divisible by any number between 2 and √n
  """
  def run(2), do: true
  def run(num) when num > 2 and rem(num, 2) != 0 do
    is_prime(3, num, round(:math.sqrt(num) + 1))
  end
  def run(_), do: false

radik909

defmodule Factorial do
  @moduledoc """
    Factorial for a given non-negative number
  """
  def run(0), do: 1
  def run(num) when num > 0 do
    Enum.reduce 1..num, 1, &(&1 * &2)
  end
  def run(_), do: nil
end

radik909

React Native - initialization

Node

Make sure you have Node version > 6

CRNA

I recommend using CRNA to build ReactNative apps.

radik909

Tools 💪

• Prefer latest node version(>=8.0)
• Use yarn over npm

Code formatting

• Use Prettier for formatting your code.
• Integrate Prettier with your editor.

radik909

defmodule Fibonacci do
  def run(num) when num > 0 do
    Stream.unfold({1, 1}, fn {a, b} ->  
      {a, {b, a + b}}
    end)
    |> Enum.take(num)
  end
end

IO.gets("Enter the limit: ")