Function polars::export::arrow::array::get_value_display

pub fn get_value_display<'a, F>(
    array: &'a (dyn Array + 'a), 
    null: &'static str
) -> Box<dyn Fn(&mut F, usize) + 'a, Global> where
    F: 'a + Write, 

Returns a function that writes the value of the element of array at position index to a Write, writing null in the null slots.