What Is a Common Pattern for Handling the Success of an External Call ?

A common secure pattern is to immediately check the boolean return value of the low-level call function using a require statement. The pattern is (bool success, ) = recipient.call{value: amount}(""); require(success, "External call failed");.

This ensures that if the external call fails for any reason, the entire transaction is reverted, preventing any subsequent logic from executing and maintaining the contract's state integrity.