Re: [boost] [gil::io] Feedback for scanline_read_iterator

Hi Nathan,

...

you mean pass a boolean into operator*?

Surely not, as the signature of an overloaded operator is fixed :)

I think Phil means rather than do the read in operator++, just set a flag in operator++ that the read should be done, and actually do it in operator* (which then clears the flag). Then if someone calls operator++ again without calling operator* (which you can detect by the flag being set in operator++), you can do a skip in operator++, and thus avoid decoding the line you didn't need.

Interesting idea. I'll update the code. Christian