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Pre Conditions

Definition

Pre conditions are statements that define the necessary state of a system or program before a specific operation or function can be executed successfully. In the realm of smart contracts and blockchain transactions, these are formal assertions specifying what must be true about the contract’s state, input parameters, or caller’s permissions prior to a transaction being processed. They act as guard clauses, preventing invalid operations and ensuring that the contract only proceeds under safe and expected circumstances. Satisfying pre conditions is fundamental for preventing errors and maintaining the security of decentralized applications.