On Mon, Apr 20, 2015 at 1:45 PM, Kurt Sys <[email protected]> wrote:
> The basic stuff I need is really very similar. What I like about react, is > not the dom diffing as such, the 'should-update' mixin. This really can > make things way easier. It doesn't play as nice as I thought it to be > between rum and datascript queries, but it'll work. Datascript queries are > really amazingly powerful to me. I use them really a lot, and full dom > diffing might be pretty, or more, expensive compared to a 'should-update'. > > That said, I had been looking to clara before (for another kind of > project), but I pretty much like the idea of using it as 'database/query > engine'-someting. Would you implement something like the should-update on > component basis as well. I'm really very interested in your wrapper/library > and how it would work out. > The nice thing about Clara (and rule engines in general) is that you can declare that certain functions (RHS) are to be called when a set of conditions/queries (LHS) over your data evaluate truthfully. There is no need for "should-update" polling, it is more don't call us, we will call you - control is inverted. When a user or server event happens the handler code inserts the event data into the engine and then calls the fire-rules function to trigger subsequent actions based on the rule conditions. Clara does truth maintenance which is an awesome feature but in my use case I have to work around it slightly to accommodate transient facts/events. Not a big deal just something to keep in mind when first understanding how it works. I don't really see there being a need for a wrapper around Clara - you can use it as-is. I'm just trying to figure out the best way to integrate it in the client-side context. It was built with a particular set of use cases in mind that don't always match up with my experience with other rule engines that are more "mutation" oriented. Clara's rule engine is a value in the same way that Datomic's database is a value. This is super powerful but that means you need to organize your code slightly to take this into account. Alan -- Note that posts from new members are moderated - please be patient with your first post. --- You received this message because you are subscribed to the Google Groups "ClojureScript" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/clojurescript.
