On Dec 24 2010, at 17:32 , Ulf Zibis wrote: > Trying to correct white space ... > > Am 23.12.2010 23:59, schrieb Paul Benedict: >> Ulf, a previous email by Remi said only to invoke size() if the collection >> is a Set. > Thanks I missed that. > My guess was, that size() should be always faster than instantiating an > iterator for the final for-loop, and then seeing, that there is no element.
An earlier webrev had an isEmpty() check in the "c1 is a Set" half of the branch. This optimization would pay off in some cases but cost a small amount in others. Since I don't have any strong sense of whether including it would be of actual benefit or harm I opted to take it out in later revisions. Mike
