Maps

Hi, absolutely love the speed, robustness, and elegance of S.js.

I am building something with S.js that requires me to keep a large data structure that looks something like a Map<string, DataSignal<any>>. I would like the insertions and deletions to the Map to be reactive because some of the computations in the map rebuild their computed values based on other values in the map being available or not available .

I don’t need Mobx in this application, or else I would use it’s reactive Map, because it’s a very low level app, where the performance of S.js is desired. Any idea for a simple way to achieve observing some kind of keyed data structure with S.js? It doesn’t have to a true ES6 Map, just some way to achieve the desired effect.

[ryansolid]

In regards to the dirty tracking you could do it that way. For arrays we are pretty used to using rest operators, concating, or other immutable methods to clone the array and set the Signals so it’s why I feel less awkward setting it. If I were to make a pure Map option I’d expect this handled for me, But I think this is probably more inspired from the desire of encapsulating existing data structure uses than what makes the most sense to how to pattern code with Signals.

[mrjjwright]

@adamhaile Is it ok to share 2 different unique indexes over the same SArray?