Contract Address argument (Interface Types)

[AnandK-2024]

When a function takes a contract address as an argument, it is better to pass an interface or contract type rather than a raw address. If the function is called elsewhere within the source code, the compiler will provide additional type safety guarantees.

The benefits of using the TypeSafeAuction contract above can then be seen from the following example. If validateBet() is called with an address argument, or a contract type other than Validator, the compiler will throw this error: