Method to_string

src/math/sparse_vector.rs:115–122

(&self)

impl ToString for SparseVector {
    fn to_string(&self) -> String {
        let keys = self.st.keys();
        let mut v = Vec::with_capacity(keys.len());
        for &i in keys {
            v.push(format!("({}, {})", i, self.get(i)));
        }
        v.join("")
    }
}

impl Clone for SparseVector {