It seems that io.SizedReaderAt was added temporarily during the 1.7 cycle, but promptly removed. I see an standing github issue for it (15822) but it doesn't seem to have much activity.
I would like to express my hope that it comes back (and hopefully others will to). A use case that I am interested in is turning a ReaderAt into a Reader, which is currently non-trivial to convert. The io package has a SectionReader, but to create one of those you need to know the size, which a plain ReaderAt won't provide. There are some other places in the API that would benefit from such a class, such as the archive/zip package. Currently, it is not possible to read from an in memory Zip file, because the only method to open zips is OpenReader(name string) !? I understand that the index is at the back of the file, so a plain reader can't be passed in. However, a SizedReaderAt would conveniently fit as a zip Reader, since it know the size in advance. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
