If true, MultiValueMapItem.lamportTimestamp is present in aggregated items.
If true, MultiValueMapItem.wallClockTime is present in aggregated items.
The aggregate function, called on concurrently-set values plus metadata (as MultiValueMapItems).
items is always non-empty, and its order is
eventually consistent. Specifically, it is
in order by [[MultiValueMapItem.sender]].
The aggregated value.
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Wrapper for an aggregate function.
By default, if multiple users set a value on a CVar, CValueMap, or CMap concurrently, one value is picked arbitrarily. You can supply an Aggregator in their constructor to instead apply aggregate to the concurrently-set values, returning your desired value.
For example, our whiteboard demo takes the RGB average of concurrently-set colors, thus blending concurrent strokes.