On Wed, 28 Jan 2015, adamn...@gmail.com wrote: > Hmm, I've never tried this before. > > Suppose a function GetCurrent(DateRange as Date[]), now intuitively > DateRange is an array of 2 dates. No-one would be silly enough to pass an > array with more than two elements would they? My cynical nature says yes > they could/would. > > I could ignore the array length and just use DateRange[0] and DateRange[1] as > the limits but that may produce confusing outcomes, or an error if DateRange > contains only one element. >
That's how I do it in the Graph class. A vertex is identified via a name String and an edge is a String[2]. I expect the user to provide a String[] with at least 2 elements of which indices 2, 3, ... are ignored. If they don't follow these rules, they can go jump in the lake -- or wherever it is where runtime errors dwell. The thing is, as you implied, that there is (likely) no error recovery strategy which is guaranteed to be natural for everyone. My personal practice in these cases is to let the interpreter raise the appropriate error. Less defined behaviour in a component's interface makes it easier to be backwards-compatible :-) (The otherwise very good suggestion of using a Struct/Class was not applicable to the graph case, IIRC.) Regards, Tobi -- "There's an old saying: Don't change anything... ever!" -- Mr. Monk ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
