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mingo
mingo
operators/pipeline/count
$count
Function $count
Returns a count of the number of documents at this stage of the aggregation pipeline.
See
usage
.
$count
(
collection
,
expr
,
options
)
:
Iterator
Parameters
collection
:
Iterator
expr
:
unknown
options
:
Options
Returns
Iterator
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Returns a count of the number of documents at this stage of the aggregation pipeline.
See usage.