I want to declare an array to store my strings as follows. bytes32[3] verifiedResult; verifiedResult = ["verified successfully", "verified failed", "not clear"]
I am in the process of building a dapp for a project. I have one last thing to adjust: detect when a user changes metamask account to reset the state but it doe
I want to declare an array to store my strings as follows. bytes32[3] verifiedResult; verifiedResult = ["verified successfully", "verified failed", "not clear"]
First question so bare with me if it is not very clear, but I'll try my best. I am currently running through a youtube video to test my contract with hardhat, e
I am trying to perform a certain action say like selling a token only when the message sent to a contract is signed by the contract owner. I knew how I would do
If a smart contract has the compiled bytecode for a contract can the first deploy a subsequent contract? According to Ethereum.org: "To deploy a smart contract,
i try to write NFT marketplace and i have problem with reselling items from user that buy item from owner and new, third user. I use next.js + openzeppelin + ha
Solifity 0.8.0 with struct struct Placeholder{ string a; uint256 b; } mapping(uint256 => Placeholder[]) public placeholder; why this error Member "b" no
I installed py-solc-x via pip3 install py-solc-x in the terminal but when I run the program, I still get an importerror. What's going on here? My code: from sol
I am new to solidity. This is my 1st simple project when I do node compile.js & I am getting following error: My Error : { contracts: {}, errors: [ ":
I am getting this error message when trying to interact with my smart contract on my react front end. I am running localhost3000 and which requires metamask to
While trying to troubleshoot another issue with my project, I must've broken something along the way, but I have no idea how to fix this. These are my import st
When creating a ERC721 contract that manages thousands of image NFTs, saving these image byte pixels in arrays on the contract doesn't seem ve
When creating a ERC721 contract that manages thousands of image NFTs, saving these image byte pixels in arrays on the contract doesn't seem ve
I'm trying to run my brownie dapp in a docker container, but i always have the same error and can't seem to fix it: FileNotFoundError: [Errno 2] No such file or
The project we are supposed to make is a minting page that can set royalty fee on opensea testnet from the dapp itself (i.e. you cannot set it from open sea's i
I'm trying to import some contract files from open zeppelin so my solidity smart contracts can inherit their functionality, when trying to write chai tests that
Getting this error while trying to run a eth-brownie script on MacOS ModuleNotFoundError: No module named 'Users.xyz' Run command: brownie run scripts/mainne
2_deploy_contracts.js ===================== Replacing 'SimpleStorage' ------------------------- Error [ERR_UNHANDLED_ERROR]: Unhandled error. ({ code:
This is the code thats giving the error, the line is set to bold. //SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.13; contract CrowdFunding{ mapp