box.atomic()

box.atomic(tx-function[, function-arguments])

Execute a function, acting as if the function starts with an implicit box.begin() and ends with an implicit box.commit() if successful, or ends with an implicit box.rollback() if there is an error.

Return:	the result of the function passed to atomic() as an argument.

Possible errors:

• error and abort the transaction in case of a conflict.
• error if the operation fails to write to disk.
• error if for some reason memory cannot be allocated.