Method unary_mut

arrow-array/src/array/dictionary_array.rs:549–560

(self, op: F)

    /// ```
    #[allow(clippy::result_large_err)]
    pub fn unary_mut<F, V>(self, op: F) -> Result<DictionaryArray<K>, DictionaryArray<K>>
    where
        V: ArrowPrimitiveType,
        F: Fn(V::Native) -> V::Native,
    {
        let mut builder: PrimitiveDictionaryBuilder<K, V> = self.into_primitive_dict_builder()?;
        builder
            .values_slice_mut()
            .iter_mut()
            .for_each(|v| *v = op(*v));
        Ok(builder.finish())
    }

    /// Computes an occupancy mask for this dictionary's values
    ///