Access the Array object on indexSplices for splice observations

[rdcr...@google.com]

Howdy,

I have a basic "computeIsListVisible()" function that observes array changes using array.splices, and should return true if the list is non-empty.  When the array is changed, it's passed in an object with indexSplices and keySplices, but doesn't include a (documented) reference to the array that changed.  It seems like wanting to know which array changed is a reasonably common use case - could this be included and documented, so that the modified array doesn't have to be curried in somehow?

Side note: the array object that changed is actually included as an "object" property on the indexSplice record, but since it's undocumented, I'm assuming it can disappear at any moment. :)

Cheers,

- Devlin

[Eric Bidelman]

Please file a docs bug. Thanks!

https://github.com/polymer/docs

Follow Polymer on Google+: plus.google.com/107187849809354688692
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