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Version: v. 1

record

Signature​

function record() external;

Description​

Tell the VM to start recording all storage reads and writes. To access the reads and writes, use accesses.

ℹ️ Note

Every write also counts as an additional read.

Examples​

/// contract NumsContract {
///     uint256 public num1 = 100; // slot 0
///     uint256 public num2 = 200; // slot 1
/// }

vm.record();
numsContract.num2();
(bytes32[] memory reads, bytes32[] memory writes) = vm.accesses(
  address(numsContract)
);
emit log_uint(uint256(reads[0])); // 1

SEE ALSO​

Spark Standard Library

Std Storage