2.4

function curry(func) {

  return function curried(...args) {
    if (args.length >= func.length) {
      return func.apply(this, args);
    } else {
      return function(...args2) {
        return curried.apply(this, args.concat(args2));
      }
    }
  };

}
function format_date(day, month , year){
    return day + "."+ month + "." + year;
}

var date = curry(format_date);