Attempting to print s_Funders and s_addressToAmountFunded in FundMe contract

[Stark-Code]

I thought it would be nice to add some additional functionality to the FundMe contract. A function that prints the information of the s_Funders array and the s_addressToAmountFunded mapping. Cant seem to get it working. Running on localhost. First calling the fund script, then calling the withdraw script which is where the function is intended to work.

//FundMe Contract
// relevant code...
import "hardhat/console.sol";
mapping(address => uint256) public s_addressToAmountFunded;
address[] public s_funders;

function printFundData() public view {
        console.log("FundMap"); // Doesnt print
        address[] memory funders = s_funders;
        console.log(funders[0]); // Doesnt print
        for (uint256 i=0; i<funders.length;i++) {
            console.log(funders[i]); // Doesnt seem to print anything
            // console.log(s_addressToAmountFunded[funders[i]]); // Throws an error if uncommented (See error below)
        }        
 }

And calling this in the withdraw script with

console.log("Printing fundMap") // This prints
await fundMe.printFundData()

Error: call revert exception; VM Exception while processing transaction: reverted with panic code 50 [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ] (method="getFundMap()", data="0x4e487b710000000000000000000000000000000000000000000000000000000000000032", errorArgs=[{"type":"BigNumber","hex":"0x32"}], errorName="Panic", errorSignature="Panic(uint256)", reason=null, code=CALL_EXCEPTION, version=abi/5.6.4)
    at Logger.makeError (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/logger/src.ts/index.ts:261:28)
    at Logger.throwError (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/logger/src.ts/index.ts:273:20)
    at Interface.decodeFunctionResult (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/abi/src.ts/interface.ts:427:23)
    at Contract.<anonymous> (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/contracts/src.ts/index.ts:400:44)
    at step (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/contracts/lib/index.js:48:23)
    at Object.next (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/contracts/lib/index.js:29:53)
    at fulfilled (/home/john/VisualStudioCode/FCC-Blockchain/hh-fund-me/node_modules/@ethersproject/contracts/lib/index.js:20:58)
    at processTicksAndRejections (node:internal/process/task_queues:95:5) {
  reason: null,
  code: 'CALL_EXCEPTION',
  method: 'getFundMap()',
  data: '0x4e487b710000000000000000000000000000000000000000000000000000000000000032',
  errorArgs: [ BigNumber { _hex: '0x32', _isBigNumber: true } ],
  errorName: 'Panic',
  errorSignature: 'Panic(uint256)',
  address: '0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512',
  args: [],
  transaction: {
    data: '0xaece0c6f',
    to: '0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512',
    from: '0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266'
  }
}
error Command failed with exit code 1.

[alymurtazamemon]

@Stark-Code Maybe it consumes more gas, than your mentioned default one. Try to add gas manually.

[krakxn]

I am certain console.log is NOT used in Solidity, you can use events to keep track of them instead. That seems like the plausible issue here, that is why it never prints, hence your problem.

Note: Uhm.. let me know if I am wrong here.

[Stark-Code]

Hey you can take a look here about the console library provided by hardhat.
https://hardhat.org/tutorial/debugging-with-hardhat-network

[krakxn]

Sorry, didn't notice the import "hardhat/console.sol"; in your code.

Quick tip

You can make the code even easier to read by specifying the language like this, ie language after the three backticks

```javascript
insert code
```

Your code will look like this after the changes:

//FundMe Contract
// relevant code...
import "hardhat/console.sol";
mapping(address => uint256) public s_addressToAmountFunded;
address[] public s_funders;

function printFundData() public view {
        console.log("FundMap"); // Doesnt print
        address[] memory funders = s_funders;
        console.log(funders[0]); // Doesnt print
        for (uint256 i=0; i<funders.length;i++) {
            console.log(funders[i]); // Doesnt seem to print anything
            // console.log(s_addressToAmountFunded[funders[i]]); // Throws an error if uncommented (See error below)
        }        
 }

[Stark-Code]

Oh yeah I forgot about that. Thanks for the tip!

[krakxn]

All the best!

[Stark-Code]

Ok, I figured it out. I was running the code on a localhost. Turns out console.log is only available on the hardhat network.