Ruby Documentation Generator

def deep_reverse(lst):
    return [deep_reverse(i) if isinstance(i, list) else i for i in lst[::-1]]

import asyncio
async def hello_world():
    print('Hello')
    await asyncio.sleep(1)
    print('world')

import random
random.seed(4)
num_samples = 100000000
hits = 0
for _ in range(num_samples):
    x = random.random()
    y = random.random()
    if x**2 + y**2 <= 1.0:
        hits += 1
pi_estimate = 4.0 * hits / num_samples

SELECT Name FROM Customers WHERE Country IN (SELECT Country FROM Suppliers ORDER BY Country);

def factorial_recursive(n):
    # Base case: 1! = 1
    if n == 1:
        return 1
    # Recursive case: n! = n * (n-1)!
    else:
        return n * factorial_recursive(n-1)

=QUERY(A1:C3, "SELECT MAX(A) WHERE B='purple' GROUP BY C LABEL MAX(A) 'Maximum'")

fun main(args: Array<String>) {
  val nums = setOf(1, 2, 3, 4)
  val chars = setOf('A', 'B', 'C', 'D')
  nums zip chars
}

let add = (x) => (y) => x + y;
let addFive = add(5);
console.log(addFive(3));

public class SingletonDemo {
   private static SingletonDemo singletonInstance = null;
   private SingletonDemo() {}
   public static SingletonDemo getInstance() {
   if (singletonInstance == null) {
   singletonInstance = new SingletonDemo();
  }
  return singletonInstance;
  }
}

SELECT OrderID, ProductID, UnitPrice,
  (SELECT AVG(UnitPrice)
   FROM [Order Details]
   WHERE ProductID = OD.ProductID) AS 'Average Price for Product'
FROM [Order Details] AS OD
WHERE UnitPrice > (SELECT AVG(UnitPrice) * 1.2
FROM [Order Details]
WHERE ProductID = OD.ProductID)