Antoine Pitrou created ARROW-5102:
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Summary: [C++] Reduce header dependencies
Key: ARROW-5102
URL: https://issues.apache.org/jira/browse/ARROW-5102
Project: Apache Arrow
Issue Type: Wish
Components: C++
Affects Versions: 0.13.0
Reporter: Antoine Pitrou
To tame C++ compile times, we should try to reduce the number of heavy
dependencies in our .h files.
Two possible avenues come to mind:
* avoid including `unordered_map` and friends
* avoid including C++ stream libraries (such as `iostream`, `ios`, `sstream`...)
Unfortunately we're currently including `sstream` in `status.h` for some
template APIs. We may move those to a separate include file (e.g.
`status-builder.h`).
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