Alpha support for `Result`s

[gobanos]

Generators & Runners now support Results in return position !
I need some feedback before release, so please install alpha & comment on this issue.

Setup

In your Cargo.toml:

aoc-runner = "0.2.0-alpha1"
aoc-runner-derive = "0.2.0-alpha1"

In your terminal:
$ cargo install cargo-aoc --force --version 0.2.0-alpha1

Examples

#[aoc_generator(day1)]
fn parse_input(input: &str) -> Result<Vec<i32>, ParseIntError> {
    input
        .lines()
        .map(|l| l.parse())
        .collect()
}

#[aoc(day1, part1)]
fn part1(freqs: &[i32]) -> i32 {
    freqs.iter().sum()
}

Known limitation

By far, the biggest limitation is that I need the return type to be called Result (it still can be prefixed with a path), with at least a template parameter.
So these wont work :

type MyRes = Result<Vec<i32>, ParseIntError>;

#[aoc_generator(day1)]
fn parse_input(input: &str) -> MyRes {
    ...
}

type Result = std::result::Result<Vec<i32>, ParseIntError>;

#[aoc_generator(day1)]
fn parse_input(input: &str) -> MyRes {
    ...
}

[uberjay]

Oh wow, I was just wishing cargo-aoc has this feature. I'll give it a try right now!

[nugend]

Could you also support Options?

[uberjay]

It's alright! To be honest, It's a little hard to tell how useful it'll be only 2 days in. Something that would be pretty handy in conjunction with this would be a way to feed in alternate input data. I guess I could just use #[test] functions for this!

[gbear605]

It's working fine for me!

[gobanos]

cargo-aoc 0.2.0, with support for Result & Option is out : https://github.com/gobanos/cargo-aoc/releases/tag/0.2.0