Right, Gary, Initially I simply wrote exported functions.
The motivation for experimenting with protocols is so that I can write a ClojureScript protocol that mimics, say the iOS UITableViewDataSource Objective-C @protocol. Then, with that in place, I can write ClojureScript reifications of that protocol to be passed back to Objective-C. It is then a simple matter on the Objective-C side to make that reification *be* a UITableView's dataSource delegate (with the help of a little reusable wrapper Obj-C object around the JSValue.) In addition to perhaps keeping things tidy (keeping like methods together), it makes it easier to pass multiple @protocol instances back to iOS. (Imagine the case of two or more table views on one iOS screen, each with their own distinct ClojureScriipt implementation.) Also, a lot of this ends up being boilerplate that needs to only be written once, and then, I recoup the costs of fleshing out this plumbing by simply spitting out a (reify ... ) form whenever needed. Arguably, none of this is required because all of the UITableViewDataSource methods have the tableView as the first argument, which could be used by straightforward exported functions to dispatch or otherwise switch to the right implementation, which could in turn be a reified protocol. It just seems that, since Objective-C *wants* an object as a dataSource, that it would be interesting to try to satisfy that need (more or less directly) using the facilities available in ClojureScript. I'll ditch all of this when Apple introduces FunctionalSwift along with functional APIs, and the Clojure(Swift) compiler targets that new language. :) - Mike On Wednesday, June 18, 2014 2:48:33 PM UTC-4, Gary Trakhman wrote: > > 'any problem.. fixed.. by another layer of indirection' > > You could also just make exportable functions that call the protocols, > keeping them more as impl-details, core.cljs does this, and you gain things > like varargs (hmm, do protocol-varargs work on cljs? nope: > http://dev.clojure.org/jira/browse/CLJS-362 ) > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
