Do I need to write return something???

[h0leee]

Hi, I am in Patrick's video. In functions, when they say return in the beginning, I need to return something right? In this function, it is not erroring and I don't know why.

function checkUpkeep( bytes calldata /*checkData*/ ) external override returns (bool upkeepNeeded, bytes memory /* performData */) { bool isOpen = (RaffleState.OPEN == s_raffleState); bool timePassed = ((block.timestamp - s_lastTimeStamp) > i_interval); bool hasPlayers = (s_players.length > 0); bool hasBalance = address(this).balance > 0; upkeepNeeded = (isOpen && timePassed && hasPlayers && hasBalance); }

I don't need to say return to those two variables???

[Nlferu]

Hello @h0leee

If you are doing below:

function checkUpkeep(bytes memory /* checkData */) public view override returns (bool upkeepNeeded, bytes memory /* performData */)

You are basically declaring that this function will return 2 variables: bool and bytes type. If you declare that it will return some variables you must return them at the end of this function. If you won't return them it should throw error.

[h0leee]

It is not erroring for me and I don't know why.

[Koowah]

@h0leee

In that case, you gave the return variable names in the declaration, so there's no need for a return statement.

function foo() public pure returns (uint256) { return 5}
is equivalent to
function foo() public pure returns (uint256 x) { X = 5 }

[h0leee]

thanks you so much one more time!!!! I see it now!

[Koowah]

@h0leee My pleasure. Don't forget to mark the discussion as answered 😄