.. alg.req.ind.copy alg.req.ind.move alg.req.ind.swap alg.req.mergeable alg.req.permutable alg.req.sortable bidirectional.iterators forward.iterators indirectcallable indirectcallable.traits input.iterators iterator.assoc.types iterator.concepts iterator.cust iterator.iterators iterator.requirements.general output.iterators random.access.iterators