ponzao

(letfn [(factorial [n i] 
              (if (> i 1)
                (factorial
                  (* n i)
                  (dec i))
                n))]
  (factorial 1 5))

ponzao

val n: Option[Int] = None
val res = n.map(_ + 4).map(_ + 100)
res.getOrElse(0) // => 0

val n: Option[Int] = Some(10)
val res = n.map(_ + 4).map(_ + 100)
res.getOrElse(0) // => 114

ponzao

(defn char-counter [str]
  (reduce 
    (fn [m c]
      (assoc m c (inc (get m c 0))))
    {}  
    str))

ponzao

private ExpectedCondition<Boolean> element(final By findCondition) {
    return new ExpectedCondition<Boolean>() {
        @Override
        public Boolean apply(WebDriver from) {
            RenderedWebElement element = (RenderedWebElement)
                driver.findElement(findCondition);
            return element.isDisplayed();
        }
    };
}

ponzao

factorial = { 1 }
setmetatable(factorial, { __index = function(table, key)
        table[key] = table[key - 1] * key
        return table[key]
    end, __call = function(table, n)
        for i = 1, n do
            print(table[i])
        end
    end })