Method suffix_bytes_iter

arrow-array/src/array/byte_view_array.rs:419–439

Returns an iterator over the last `suffix_len` bytes of each array element, including null values. Note that for [`StringViewArray`] the last bytes may start in the middle of a UTF-8 codepoint, and thus may not be a valid `&str`. If `suffix_len` is larger than the element's length, the iterator will return an empty slice (`&[]`).

(&self, suffix_len: usize)

    /// If `suffix_len` is larger than the element's length, the iterator will
    /// return an empty slice (`&[]`).
    pub fn suffix_bytes_iter(&self, suffix_len: usize) -> impl Iterator<Item = &[u8]> {
        self.views().into_iter().map(move |v| {
            let len = (*v as u32) as usize;

            if len < suffix_len {
                return &[] as &[u8];
            }

            if len as u32 <= MAX_INLINE_VIEW_LEN {
                unsafe { &StringViewArray::inline_value(v, len)[len - suffix_len..] }
            } else {
                let view = ByteView::from(*v);
                let data = unsafe {
                    self.data_buffers()
                        .get_unchecked(view.buffer_index as usize)
                };
                let offset = view.offset as usize;
                unsafe { data.get_unchecked(offset + len - suffix_len..offset + len) }
            }
        })
    }

    /// Return an iterator over the length of each array element, including null values.
    ///