Equivalent JS and CoffeeScript functions?

equivs.txt

JS:
//////////

function getSpeedySignature (ofString) {
	var sum
		,len
		,i;

	sum = 0;
	len = ofString.length;

	for (i = 0; i < len; i++) {
		sum += ofString.charCodeAt(i);
	}

	return sum;
}


CoffeeScript:
//////////

getSpeedySignature: (ofString) ->
  sum = 0
  len = ofString.length

  return ofString.split('').reduce (prev, curr, i) -> 
    +prev + curr.charCodeAt(0)
  ,0

Looks good! The only changes I'd make are 1) move the reduce callback out for readability (it's actually fewer lines that way, too), 2) ditch len since it's unused, and 3) ditch the explicit return. So:

getSpeedySignature = (ofString) ->
  sum = 0
  addCharCode = (prev, curr, i) -> +prev + curr.charCodeAt(0)
  ofString.split('').reduce addCharCode, 0

Ohhh, that is much nicer. Nice, thanks for the critique! This is the first thing I've written in CoffeeScript, the syntax is quite nice (although it's a big departure from the C-style syntaxes I'm used to).