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    def interest_calc(initial_amount, interest, monthly_addition, months) do
      Stream.unfold(initial_amount, fn x ->
        month_end_principle = x + monthly_addition
        new_principle = month_end_principle * (1 + (interest/12))
        {new_principle, new_principle}
      end) |> Enum.take(months)
    end

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# provides a stream of primes below n
# where range is a list from 2 to n
Stream.unfold(range,fn [head|tail] -> {head, tail |> Enum.filter(fn x -> rem(x,head) != 0 end)}; [] -> nil end)

# Parallelized version ~20% speed increase
    def eliminate_factors(workers, prime_number) do
      Enum.map(workers, fn worker ->
        send(worker, {:factor, prime_number})
      end)
      Enum.map(workers, fn worker ->

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  def  fibonacci_stream do
    Stream.unfold( [1], fn
      [prev, curr] ->
          next = prev + curr
          {next, [curr, next]}
        ([1]) ->
          {1, [1,1]}
        end)
    end
    

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      <section class="slide" id="declarative">
        <h2>Declarative</h2>
        <blockquote>A programming paradigm that expresses the logic of a computation without describing its control flow</blockquote>
        <section class="slide"><center><h3>Lets make a list of numbers 1-5</h3></center></section>
        <section class="slide">
          <h3>Declarative</h3>
          <pre class="prettyprint"><code>
            let x = take 5 [1..]
          </code></pre>
          <h3>Imperative</h3>

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import Token
import Text.Regex.Posix
import Data.List

lexer :: String -> [Token]
lexer input lineNumber 
  | input =~ endline :: Bool =
    let token = input =~ endline :: String
      in lexer (delete (contents token) input) lineNumber + 1 
  |input =~ whitespace :: Bool = 

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function parseGetResponse(response){
  var splitUrl = response.split("?")[1].split("&");
  var variables = {};
  for(var i=0; i<splitUrl.length; i += 1){
    var broken = splitUrl[i].split("=");
    var key=broken[0];
    var value = broken[1];
    variables[key] = value;
  }
  return variables;

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	if($a123 > 3)

	{

		$a123=0;

	}

	if($a123 == 0)

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function get_random_id()
{
	$random = '';
	
	for ($i = 1; $i <= 8; $i++) 
	{
		$random.= mt_rand(0, 9);
	}
	
	return $random;