[jira] [Created] (ARROW-7086) [C++] Provide a wrapper for invoking factories to produce a Result

["Ben Kietzman (Jira)" <ji...@apache.org>]

Ben Kietzman created ARROW-7086:
-----------------------------------

             Summary: [C++] Provide a wrapper for invoking factories to produce a Result
                 Key: ARROW-7086
                 URL: https://issues.apache.org/jira/browse/ARROW-7086
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++
    Affects Versions: 0.15.1
            Reporter: Ben Kietzman
            Assignee: Ben Kietzman
             Fix For: 1.0.0


There is a proliferation of code like:

{code}
Result<int> SafeAdd(int a, int b) {
  int out;
  RETURN_NOT_OK(DoSafeAdd(a, b, &out));
  return out;
}
{code}

Ideally, this should be resolved by moving the implementation of SafeAdd into the Result returning function then using {{Result::Value}} in the Status returning function. In cases where this is inconvenient, it'd be helpful to have an adapter for doing this more efficiently:

{code}
Result<int> SafeAdd(int a, int b) {
  return ResultInvoke(DoSafeAdd, a, b);
}
{code}



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