Hi,<div><br></div><div>I don&#39;t think a container is a good choice. Streams were invented for a reason (regardless of the language), which is to allow tranfers of data without loading it all in memory. If a user wants to load directly from/to a file, a network or any out-of-memory resource, he needs streams in order to minimize memory consumption. If however he wants it all in a container for any reason, <span></span>stream iterators are here for that.</div>

<div><br></div><div>Regarding variants<span></span>, I implemented them for a few algos (this is not &quot;public-facing&quot; for the time being) and I did it for WTK as it was useful for testing. For now the implementation is a little bit boiler-plate, with most of the magic repeated in all algos. Moving forward I intend to factorize but I need the big picture first</div>
<div><br></div><div>Regards</div><div>Bruno</div>