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https://issues.apache.org/jira/browse/PDFBOX-4554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16851879#comment-16851879
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Jason Pyeron commented on PDFBOX-4554:
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if the input is in range 0...100 and the source is of length 1000, I have to 
copy the array first to shorten it. That is what you don't seem to grok.

> operations taking a byte[] need to allow for offset and length too
> ------------------------------------------------------------------
>
>                 Key: PDFBOX-4554
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4554
>             Project: PDFBox
>          Issue Type: Improvement
>            Reporter: Jason Pyeron
>            Priority: Major
>
> Without this, massive amounts of memory must be copied/allocated to "trim" 
> byte[].
> See forthcoming pull request.



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