Mongodb, create index on a subdocument which is a list

Question

Is it possible to create index on name field in fruit subdocument ?

{                                                                               
    "trees": 5,
    "fruit":[{"name":"apple", "color":"red"}, {"name":"pear", "color":"green"}]
}

Answer 1

db.yourCollection.ensureIndex({"fruit.name":1})