[jira] [Commented] (ARROW-517) C++: Verbose Array::Equals

["Wes McKinney (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15889254#comment-15889254 ] 

Wes McKinney commented on ARROW-517:
------------------------------------

I don't think this is difficult to implement (probably want to add a {{verbose}} flag to {{RangeEqualsVisitor}} in {{compare.cc}}), but the one tedious item is that we need to implement string formatting functions for scalar values (i.e. something that knows how to write a human-readable value into an {{std::ostream}})

> C++: Verbose Array::Equals
> --------------------------
>
>                 Key: ARROW-517
>                 URL: https://issues.apache.org/jira/browse/ARROW-517
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++
>            Reporter: Uwe L. Korn
>
> In failing unit tests I often wished {{Array::Equals}} would tell me where they aren't equal. This would save a lot of time in debugging.



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