Ritchie Vink

Support HDF5 reading/writing (with optional dependencies)

31

We can reduce friction by figuring out how to load data most efficiently to polars memory.

feat: use `itoa` and `ryu` for inter/float to string.

2

This can speed up formatting and csv writing.

The last planned `0.15.x` release. @stinodego @alexander-beedie FYI. I will start merging the breaking PR's shortly.

Carefully chose my wording. Planned 0.15.x release. ;) Patch the regression regarding semi joins.

### Problem description We should investigate how we can support ADBC. This might also allow us to write back to a database. ## python example https://arrow.apache.org/adbc/0.1.0/python/quickstart.html ## api https://arrow.apache.org/docs/format/ADBC.html

Spurious pytest failure

1

### Polars version checks - [X] I have checked that this issue has not already been reported. - [X] I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of...

fixes #6397

fixes #6573