ArrayComputed issues

[wagenet]

• Ember Data relationships and multiple computed.sort CPs can cause error - Ember Data relationships and multiple computed.sort CPs can cause error #4919
• iterDeps (ember.js#2818, canary) calls "propertyDidChange" on attributes, that were used by Ember.computed.sort - iterDeps (ember.js#2818, canary) calls "propertyDidChange" on attributes, that were used by Ember.computed.sort #4231
• SortableMixin does not work when whole array changes - SortableMixin does not work when whole array changes #3706
• TypeError for Ember.computed.sort in DependentArraysObserver.prototype.dependentArrayWillChange - TypeError for Ember.computed.sort in DependentArraysObserver.prototype.dependentArrayWillChange #5596
• Ember computed sort fails with contentIndex property - Ember computed sort fails with contentIndex property #9485

PRs:

• Ember.computed.sort Observers - [BUGFIX beta] Ember.computed.sort Observers #5150
• fix reduce computed - fix reduce computed #9492

[patricklx]

Is there work being done on array computed or reduce computed?
Else, i can do something ;). Currently i have some free time.

I read somewhere that, for example, beforeObserver will be deprecated. So reduce computed must be adapted.

I also see some possible optimizations in reduce computed, e.g. use run.once to coalescence the item changes. But a get could still flush them directly and get the new value

Some array computed macros could make use of flushedChanges to detect if an item really needs to be removed, currently they are removed and added again.

Finally value changes could only be triggered once, after flushedChanges. Currently it is done on every setValue

[mmun]

@patricklx ping me on IRC if you want to chat about this. I'm mmun on #emberjs-dev.

[estshy]

Is there any chance that those errors would be fixed in incoming release? I'm waiting to deploy an application to production and it's necessary for it to get array computed worked properly ;)

[wagenet]

@estshy Unfortunately, many of these issues may necessitate a more significant overhaul so I can't give an ETA at the moment. We'd love to hear from people interested in helping out though.

[Serabe]

@wagenet I might be one of those people. I'm skimming through the code trying to get to understand it and having a goal might help me.