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Migration instructions for file driver. #953

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Feb 9, 2024
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Migration instructions for file driver. #953

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13 changes: 13 additions & 0 deletions doc/migration_guide.md
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Expand Up @@ -119,3 +119,16 @@ Note that objects of type `DataSpace::DataSpaceType` will no longer silently
convert to an integer. Including the two constants
`DataSpace::dataspace_{scalar,null}`.

## Deprecation `FileDriver` and `MPIOFileDriver`.
These have been deprecated to stick more closely with familiar HDF5 concepts.
The `FileDriver` is synonymous to `FileAccessProps`; and `MPIOFileDriver` is
the same as:
```
auto fapl = FileAccessProps{};
fapl.add(MPIOFileAccess(mpi_comm, mpi_info));
```

We felt that the savings in typing effort weren't worth introducing the concept
of a "file driver". Removing the concept hopefully makes it easier to add a
better abstraction for the handling of the property lists, when we discover
such an abstraction.
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