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Error handling in Solidity

An error will undo all changes made to the state during a transaction.

- require is used to validate inputs and conditions before execution.
- revert is similar to require. See the code below for details.
- assert is used to check for code that should never be false.

If the condition specified in require evaluates to false, the transaction is reverted, and all state changes made up to that point are undone
60 $DEGEN