Method vector_subtraction

src/darkbird/storage_vector.rs:341–350

Performs element-wise subtraction of two vectors stored in the storage. The vectors are identified by their keys (IDs). The function returns the result of the subtraction as a new vector. The vectors must have the same number of dimensions. # Arguments `key1` - The key (ID) of the minuend vector. `key2` - The key (ID) of the subtrahend vector. # Returns An `Option` containing the result of th

(&self, key1: &str, key2: &str)

    /// assert_eq!(result, Some(vec![-3.0, -3.0, -3.0]));
    /// ```
    pub fn vector_subtraction(&self, key1: &str, key2: &str) -> Option<Vector> {
        let v1 = self.vcache.get(key1)?;
        let v2 = self.vcache.get(key2)?;
        if v1.0.len() != v2.0.len() {
            return None;
        }

        let v = v1.0.iter().zip(v2.0.iter()).map(|(x, y)| x - y).collect::<Vec<f32>>();
        return Some(Vector(v))
    }

    /// Performs scalar multiplication of a vector stored in the storage.
    ///