How to delete n-th element of array in mongodb

Question

For example I have this document:

db.test.save({
  _id: 1,
  list: [
    { key: \"a\" },
    { key: \"b\" },
    { key: \"c\" },
    { key: \"d\" },
    { ke         


        

Answer 1

if you know the value which you want to remove

db.test.update({{_id: 1},{"$pull" : {"list" : { "key" : "c"}}},false,false)

more info at

http://www.mongodb.org/display/DOCS/Advanced+Queries#AdvancedQueries-ValueinanArray