Method reinterpret_cast

arrow-array/src/array/primitive_array.rs:858–863

Reinterprets this array's contents as a different data type without copying This can be used to efficiently convert between primitive arrays with the same underlying representation Note: this will not modify the underlying values, and therefore may change the semantic values of the array, e.g. 100 milliseconds in a [`TimestampNanosecondArray`] will become 100 seconds in a [`TimestampSecondArray`

(&self)

    /// let b: TimestampNanosecondArray = a.reinterpret_cast();
    /// ```
    pub fn reinterpret_cast<K>(&self) -> PrimitiveArray<K>
    where
        K: ArrowPrimitiveType<Native = T::Native>,
    {
        PrimitiveArray::new(self.values.clone(), self.nulls.clone())
    }

    /// Applies a unary infallible function to a primitive array, producing a
    /// new array of potentially different type.