Ben Kietzman created ARROW-10484:
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Summary: [C++] Future<{void,Status}> could be more generic
Key: ARROW-10484
URL: https://issues.apache.org/jira/browse/ARROW-10484
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Affects Versions: 2.0.0
Reporter: Ben Kietzman
Assignee: Ben Kietzman
Fix For: 3.0.0
The members of {{Future<{void,Status}>}} differ from other instantiations of
{{Future<>}} since they contain only a Status and not a value. This is
reasonable, however it complicates generic usage of {{Future<>}} since special
cases must be added for the different interfaces. IMHO it'd be acceptable to
provide an empty "ValueType" (or maybe {{std::nullptr_t}} to follow the
precedent of Datum's default state) for those specializations to keep the
interface generic.
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