Doesn’t the option until/while syntax fit the bill for early exit? I agree an automatically-maintained index would be nice, though.
Jeremy > On 5 May 2020, at 19:13, James Crate via 4D_Tech <4d_tech@lists.4d.com> wrote: > > In 4D, when enumerating collections or entity selections, about half the time > I want an index for progress calculation, and other times I have to use the > indexed for loop because I want to early exit. > > For other languages, providing the index on enumeration varies by language > and enumeration construct, but most have an enumeration construct that > provides an index. Almost all support break. > > So 4D’s implementation could be considered more redundant, less > feature-complete. If an index were provided instead of start/end, and you > could set that index to .length to exit the loop, we’d pretty much never have > to use an indexed loop for a collection or entity selection. > > Jim Crate ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
