Method append_byte_map

datafusion/functions/src/strings.rs:506–511

(&mut self, src: &[u8], mut map: F)

    /// Panics if the cumulative byte length exceeds `O::MAX`.
    #[inline]
    pub unsafe fn append_byte_map<F: FnMut(u8) -> u8>(&mut self, src: &[u8], mut map: F) {
        self.value_buffer.extend(src.iter().map(|&b| map(b)));
        let next_offset =
            O::from_usize(self.value_buffer.len()).expect("byte array offset overflow");
        self.offsets_buffer.push(next_offset);
    }

    /// See [`BulkNullStringArrayBuilder::append_with`].
    ///