SJS new each

exports.sym_each = Symbol("each")

function each(sequence, r) {
  if (isArrayLike(sequence) || isBuffer(sequence)) {
    for (var i=0, l=sequence.length; i<l; ++i) {
      var res = r(sequence[i]);
      if (__oni_rt.is_ef(res))
        return async_each(sequence, r, i, res);
    }
  }
  else if (isString(sequence)) {
    for (var i=0, l=sequence.length; i<l; ++i) {
      var res = r(sequence.charAt(i));
      if (__oni_rt.is_ef(res))
        return async_each(sequence, r, i, res);
    }
  }
  else
    return sequence[sym_each](sequence, r);
}
exports.each = each;