Function unary

pub fn unary<I, F, O>(array: &PrimitiveArray<I>, op: F) -> PrimitiveArray<O>
where
    I: ArrowPrimitiveType,
    O: ArrowPrimitiveType,
    F: Fn(<I as ArrowPrimitiveType>::Native) -> <O as ArrowPrimitiveType>::Native,

See PrimitiveArray::unary