Parse Multiple Lines Of Integers With nom In Rust

//! ```cargo
//! [dependencies]
//! nom = "7.1.3"
//! ```

use nom::branch::alt;
use nom::character::complete::i64;
use nom::character::complete::line_ending;
use nom::character::complete::space1;
use nom::combinator::eof;
use nom::multi::many1;
use nom::multi::separated_list1;
use nom::sequence::pair;
use nom::IResult;
use nom::Parser;

fn main() {

    let input = "1 2 3 4 5
-9 -8 234 123123 433
28927 -234";

    let data = parse(input).unwrap().1;
    dbg!(data);
}

fn parse(source: &str) -> IResult<&str, Vec<Vec<i64>>> {
    let (source, results) = many1(
        pair(
            separated_list1(space1, i64),
            alt((line_ending, eof)),
        )
        .map(|(x, _)| x),
    )(source)?;
    Ok((source, results))
}