Functions with unknown amount of args.

[espruino-discuss]

Posted at 2013-11-14 by user6155

Is this (see listing) possible with espruino javascript.

function add() {
  var i, len, result = 0;
  for (i = 0; len = arguments.length; i < len; ++i) {
  result += arguments[i];
  }
  return result;
}

add(3, 7, 4, 6);  //result = 20

[gfwilliams]

Posted at 2013-11-14 by @gfwilliams

Hi,

Yes, it is. It was only added within the last month or two though. I've just discovered that prefix increment isn't in there yet (and I think you have a typo after 'i=0'), however the following code works fine:

function add() {
  var i, len, result = 0;
  for (i = 0, len = arguments.length; i < len; i++) {
  result += arguments[i];
  }
  return result;
}
add(3, 7, 4, 6);  //result = 20