pub fn i32<T, E: ParseError<T>>(input: T) -> IResult<T, i32, E> where
T: InputIter + Slice<RangeFrom<usize>> + InputLength + InputTake + Clone,
<T as InputIter>::Item: AsChar,
T: for<'a> Compare<&'a [u8]>, Expand description
will parse a number in text form to a number
Complete version: can parse until the end of input.