## kernels.to_arrow()


Serialize one ibnr result to an Arrow IPC stream.


Usage

``` python
kernels.to_arrow(
    obj,
    *,
    compression=None,
)
```


`compression` is `None`, `"lz4"` or `"zstd"`; anything else is refused by pyarrow. Leave it alone unless the link is the bottleneck: on posterior draws zstd buys 7.5% of the size for about three times the encode cost, and lz4 comes out larger than the uncompressed envelope.