Report for issue #59 updated by RaymondFam

data/RaymondFam-Q.md

@@ -53,9 +53,7 @@ Zero address and zero value checks should be implemented when initializer is del
 https://github.com/PartyDAO/party-contracts-c4/blob/main/contracts/crowdfund/BuyCrowdfund.sol#L64-L88
 https://github.com/PartyDAO/party-contracts-c4/blob/main/contracts/party/Party.sol#L33-L45
 
-## Assert Costs More Gas Than Require
-The `assert()` function when false, uses up all the remaining gas and reverts all the changes made. On the other hand, a `require()` function when false, also reverts back all the changes made to the contract but does refund all the remaining gas fees we offered to pay.
+## Use call instead of transferEth
+`call`, which returns a boolean value indicating success or failure, in combination with re-entrancy guard is the recommended method to use after December 2019. And, guard against re-entrancy by making all state changes before calling other contracts using re-entrancy guard modifier. Here's one instance entailed:
 
-https://github.com/PartyDAO/party-contracts-c4/blob/main/contracts/proposals/ListOnOpenseaProposal.sol#L221
-
-On a side note, the assert function should only be used to examine invariants and test for internal problems. When used correctly, it can assess your contract and discover the conditions and function calls that will result in a failed assert. A properly running program should never reach a failing assert statement; if this occurs, there is a flaw in your contract that has to be addressed.
+https://github.com/PartyDAO/party-contracts-c4/blob/main/contracts/crowdfund/Crowdfund.sol#L487