fn new()

in src/builder.rs [178:203]

• 22 lines of code
• 3 McCabe index (conditional complexity)

    fn new(id: &[u8], subset_size: usize, universe_size: usize, inverted: bool) -> Self {
        assert!(subset_size <= universe_size);

        // TODO: Tune epsilon as a function of the inputs. Numerical experiments?
        let epsilon = 0.02;
        let m = ((1.0 + epsilon) * (subset_size as f64)).floor() as usize;

        let rank = if subset_size == 0 || 2 * subset_size >= universe_size {
            0
        } else {
            (((universe_size - subset_size) as f64) / (subset_size as f64))
                .log2()
                .floor() as usize
        };

        Ribbon {
            id: AsRef::<[u8]>::as_ref(id).to_vec(),
            rows: vec![Equation::zero(); m],
            m,
            epsilon,
            rank,
            exceptions: vec![],
            inverted,
            phantom: std::marker::PhantomData,
        }
    }