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OOPS::TxHash - Transactions on a simple hash
use OOPS::TxHash; my %underlying_hash; my $th = tie my %hash, 'OOPS::TxHash', \%underlying_hash or die; $th->commit; $th->abort;
OOPS::TxHash provides transactions on a hash. Changes to the tied hash will only be reflected on the underlying if commit() is called.
This is not recursive: if a hash value is a reference and the reference is followed to a value and the value is changed, it will be changed for both the hash and the underlying hash.
The abort() method will reset the values of the hash to the underlying hash.
No commit() is called by DESTROY: you must call commit() explicitly if you want the changes preserved.