pub fn with_transaction<T, E, F>(f: F) -> Result<T, E>
Expand description
Execute the supplied function in a new storage transaction.
All changes to storage performed by the supplied function are discarded if the returned
outcome is TransactionOutcome::Rollback
.
Transactions can be nested up to TRANSACTIONAL_LIMIT
times; more than that will result in an
error.
Commits happen to the parent transaction.