1. override
String toString()

Returns a string representation of this object.

Source 

@override
String toString() {
  StringBuffer buffer = new StringBuffer();

  terms.forEach((Term t) => buffer.write('$t'));

  if (constant != 0.0) {
    buffer.write(constant.sign > 0.0 ? '+' : '-');
    buffer.write(constant.abs());
  }

  return buffer.toString();
}