Method sub

src/math/sparse_vector.rs:105–111

(self, rhs: Self)

    type Output = Self;

    fn sub(self, rhs: Self) -> Self::Output {
        let mut c = self;
        for &i in rhs.st.keys() {
            c.put(i, c.get(i) - rhs.get(i));
        }
        c
    }
}

impl ToString for SparseVector {