rect_iter

Function copy_rect_conv

Source 
pub fn copy_rect_conv<T, U, I, J>(
    source: &impl Get2D<Item = T>,
    dest: &mut impl GetMut2D<Item = U>,
    source_range: RectRange<I>,
    dest_range: RectRange<J>,
    convert: impl Fn(&T) -> U,
) -> Result<(), IndexError>
where
    I: Num + PartialOrd + ToPrimitive + Copy,
    J: Num + PartialOrd + ToPrimitive + Copy,