> For the complete Linea documentation index, see [llms.txt](/llms.txt). > Agents can fetch this page as Markdown at [https://docs.linea.build/api/linea-smart-contracts/messageservice/lib/transientstoragehelpers.md](https://docs.linea.build/api/linea-smart-contracts/messageservice/lib/transientstoragehelpers.md). # TransientStorageHelpers # `TransientStorageHelpers` ### tstoreUint256 ```solidity function tstoreUint256(bytes32 _key, uint256 _value) internal ``` Internal function that stores a uint256 value at a given key in the EVM's transient storage using the `tstore` opcode. #### Parameters | Name | Type | Description | | --- | --- | --- | | _key | bytes32 | The key in the EVM transient storage where the value should be stored. | | _value | uint256 | The uint256 value to be stored at the specified key in the EVM transient storage. | ### tloadUint256 ```solidity function tloadUint256(bytes32 _key) internal view returns (uint256 value) ``` Internal function that retrieves a uint256 value from the EVM's transient storage using the `tload` opcode. #### Parameters | Name | Type | Description | | --- | --- | --- | | _key | bytes32 | The key in the EVM transient storage from which the value should be retrieved. | #### Return Values | Name | Type | Description | | --- | --- | --- | | value | uint256 | The uint256 value retrieved from the specified key in the EVM transient storage. | ### tstoreAddress ```solidity function tstoreAddress(bytes32 _key, address _addr) internal ``` Internal function that stores an address at a given key in the EVM's transient storage using the `tstore` opcode. #### Parameters | Name | Type | Description | | --- | --- | --- | | _key | bytes32 | The key in the EVM transient storage where the value should be stored. | | _addr | address | The address to be stored at the specified key in the EVM transient storage. | ### tloadAddress ```solidity function tloadAddress(bytes32 _key) internal view returns (address addr) ``` Internal function that retrieves an address from the EVM's transient storage using the `tload` opcode. #### Parameters | Name | Type | Description | | --- | --- | --- | | _key | bytes32 | The key in the EVM transient storage from which the value should be retrieved. | #### Return Values | Name | Type | Description | | --- | --- | --- | | addr | address | The address retrieved from the specified key in the EVM transient storage. | Contributions not accepted These reference pages are automatically generated based on Linea's [smart contracts](https://github.com/Consensys/linea-monorepo/tree/main/contracts/src). To ensure they accurately match the deployed smart contracts, we cannot accept any contributions that edit these pages.