Talk:Set of real numbers: Difference between revisions

::::::::: I don't really want to specify a test case for empty test. To make available operations more or less complete, you need one of the three (besides ones already in the mandetory part): is empty, set equality, or is subset. Provide any one, and the other two can be easily constructed through other binary operators. It just seemed to me that empty test is likely the least amount of work. And since length calculation would require one of them (or prove me wrong), a test case isn't necessary. As to how you do any of the required or optional task, I'm not really concerned: if all the basic methods are available, the implementation should be reasonably usable, that's all that matters. --[[User:Ledrug|Ledrug]] 01:37, 5 October 2011 (UTC)

:::::::::: As I said before, I am doing my length calculation without any of those three. The data structure I use does not concern itself with the distinction between open and closed interval and thus is not capable of supporting is empty nor set equality nor is subset. That said, the version with empty set support does have enough information to compute length -- I'll try posting an implementation of that for comparison. --[[User:Rdm|Rdm]] 10:39, 5 October 2011 (UTC)