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Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2019/04/03 08:54:00 UTC

[jira] [Created] (ARROW-5102) [C++] Reduce header dependencies

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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