2

I think you could use web3 to link the contract to be deployed to the library that is already deployed, as the following StackExchange answer suggests. code: const ConvertLib = artifacts.require("ConvertLib"); const MetaCoin = artifacts.require("MetaCoin"); module.exports = function(deployer) { ConvertLib.address = "0xabce987676......


1

It sounds like you want to just fill an order but your code is attempting to do it through meta transactions, which is what executeTransaction() does. To execute a fill through a meta-transaction, the taker will need to sign the meta-transaction object as well, and that is the signature that goes into executeTransaction(). @0x/order-utils has helpers for ...


1

Keep only one SPDX license and remove others You have typos and extra brackets in the Token contract. Replace it with this - contract Token is ERC20 { address public admin; address public liquidator; constructor() ERC20("Token", "TKN", 10000000000000000000000000000) public { admin = msg.sender; } ...


1

This error is specific to MEW 6, use their older version to resolve it: https://v5.myetherwallet.com/


1

When you compile a contract that calls external library functions, the compiler embeds the address of the library (or a placeholder for such an address) in its bytecode. It works this way no matter if you compile the contract and the library together. Linking to an already deployed library is actually the usual situation that any tool has to handle. If you ...


1

I think the main point you are missing is the middle word of EVM - Ethereum Virtual Machine. It's called virtual machine because it's a machine which is only emulated on physical machines. All client nodes form the EVM. Some nodes are only verifying transactions, and some nodes do the actual heavy lifting: executing transactions and including them in blocks -...


1

HECO blockchain recently implemented something like this. HECO is an Ethereum fork modified to implement POSA and other features. As far as I know, nodes are probably all controlled by Huobi (CEX). Last june, they implemented a hard fork that allowed to blacklist addresses and, similarly to what you want, to only allow a whitelist of addresses to deploy ...


1

The formula in your question describes a gas cost for the total amount of memory allocated in a contract call (i.e. the biggest memory location that contains a nonzero value. Zeroing memory after using it does not decrease the total amount of allocated memory). Note this is in addition to the base 3 gas of an mstore opcode. In the above formula, a is the ...


1

I had exactly the same issue and managed to solve it by passing correct ABI object. Looks like earlier versions of solc returned ABI as a JSON string and current version returns actual JavaScript object (but I'm not sure). So you can't just print contract's ABI and paste it to web3 instance (as I did). I had to JSON.stringify returned object first and then ...


Only top voted, non community-wiki answers of a minimum length are eligible