Error Handling.md

78 - Error Handling

Error Handling:

1. assert(bool condition): causes a Panic error and thus state change reversion if the condition is not met - to be used for internal errors.

2. require(bool condition): reverts if the condition is not met - to be used for errors in inputs or external components.

3. require(bool condition, string memory message): reverts if the condition is not met - to be used for errors in inputs or external components. Also provides an error message.

4. revert(): abort execution and revert state changes

5. revert(string memory reason): abort execution and revert state changes, providing an explanatory string

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Slide Screenshot

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Slide Deck

• assert(bool condition) -> Panic/revert
• require(bool condition [, string memory message]) -> Error, revert
• assert() vs require()

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References

• Youtube Reference