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https://issues.apache.org/jira/browse/CSV-82?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13238362#comment-13238362
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Sebb commented on CSV-82:
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bq. In case 2 a null value is returned, because some column may be optional.
I don't understand this concept of optional columns.
Surely any CSV header line needs to provide names for all the columns?
Otherwise, what's the point of the header line?
> CSVRecord inconsistent behaviour when header mapping is not found
> -----------------------------------------------------------------
>
> Key: CSV-82
> URL: https://issues.apache.org/jira/browse/CSV-82
> Project: Commons CSV
> Issue Type: Bug
> Reporter: Sebb
>
> The CSVRecord#get(String) method has inconsistent behaviour.
> If no header mapping was provided, then it throws IllegalStateException.
> If the header name is not found, null is returned.
> Apart from being inconsistent, it might be useful in the future to be able to
> return null as a column value (as distinct from the empty string).
> It should throw IllegalArgumentException for a missing header name, instead
> of returning null.
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