Collection.findOne

Convenience function for getting just one element from a find. Must be deleted with unlock().

struct Collection

ReturnType

findOne

(

ReturnType = BSON

T1 = BSON

T2 = BSON

)

(

T1 filter = empty!T1()

T2 options = empty!T2()

const mongoc_read_prefs_t* readPrefs = null

)

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