What is atomic operation be to change a boolean in Mongo?

What is atomic operation be to change a boolean in Mongo?

References

Reference NO 1

http://stackoverflow.com/questions/13647398/what-is-atomic-operation-be-to-change-a-boolean-in-mongo

Reference NO 2

http://docs.mongodb.org/manual/reference/command/findAndModify

Reference NO 3

http://docs.mongodb.org/manual/reference/method/db.collection.mapReduce

Reference NO 4

http://api.mongodb.org/java/2.5.3/com/mongodb/DBCollection.html

Reference NO 5

http://php.net/manual/en/mongocollection.update.php

Reference NO 6

http://mongodb.github.io/node-mongodb-native/api-generated/collection.html

Reference NO 7

http://camel.apache.org/mongodb.html

Reference NO 8

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