Approx-derive 0.2.1 now with enums

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If you have used the approx crate you may have noticed that it does not provide any derive(AbsDiffEq) or derive(RelativeEq) macros.

The approx-derive crate fixes this. It has a new release 0.2.1 which now also has support for enums and more complex nested structures. You can find the repo at github.com/jonaspleyer/approx-derive.

use approx::*;
use approx_derive::*;

#[derive(Clone, Eq, PartialEq, Debug)]
enum SamplingMethod {
    LatinHyperCube,
    Grid,
    MonteCarlo,
}

#[derive(AbsDiffEq, PartialEq, Debug)]
enum Parameter {
    Sampled {
        min: f32,
        max: f32,
        #[approx(equal)]
        sampling_method: SamplingMethod,
    },
    Fixed(f32),
}

let p1 = Parameter::Fixed(1.0);
let p2 = Parameter::Sampled {
    min: 0.0,
    max: 10.0,
    sampling_method: SamplingMethod::Grid,
};
let p3 = Parameter::Sampled {
    min: 0.1,
    max: 9.99,
    sampling_method: SamplingMethod::Grid,
};

approx::assert_abs_diff_ne!(p1, p2);
approx::assert_abs_diff_eq!(p2, p3, epsilon = 0.2);
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