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I already built a smart contract for Ethereum Blockchain by using truffle; Now, I'm looking to connect my smart contract with the IoT environment. So are there any IoT simulators...
Asked on 11/04/2021 by Byo0ona
1 answerI wrote contract and deployed it on remix today but it takes over 5 min to confirm.And I tried to call function of deployed contract , but the transaction still...
Asked on 11/04/2021 by Timmy Chien
1 answerSo I've sent a few tokens from my MEW which I haven't used in a two years and some of the transactions are taking 2+ hours and are still pending....
Asked on 11/04/2021 by N G
2 answerMy question is mainly to know if what I want to achieve is possible or not, unfortunately I cannot find (understand?) my answer elsewhere. I have no experience with Solidity,...
Asked on 11/04/2021 by Anarz
2 answerI ran the pet shop project. It uses "truffle unbox". The petshop project at:Petshop project using Assert.equal without any error is able to execute Assert.equal command...
Asked on 08/26/2021
0 answerI'm attempting to deploy a contract using Hardhat (via scaffold-eth), but am getting the following error:Error: Factory contains unresolved libraries. You must deploy and link the following libraries before...
Asked on 08/26/2021
1 answerI want to use number as normal integer, not in decimal. For example, when I use uniswap function IUniswapV2Router02Instance.methods.swapETHForExactTokens(1, , , ).send() in my project, an argument integer (1) is...
Asked on 08/26/2021 by gnxvw
1 answerI created a private test network using Puppeth and two nodes using Geth:geth account new --datadir node1geth account new --datadir node2geth init mynetwork.json --datadir node1geth init mynetwork.json --datadir node2geth...
Asked on 08/26/2021 by Peter Lawson
0 answerI'm writing a 2 Player Game. Rules:Player 1 must place a bet (and send some ether to the contract).Then, Player 2 must match the bet placed by Player 1, and...
Asked on 08/26/2021 by antoniopgs
1 answerI am trying to use the library “ethereumjs-tx” but it does not work.I get this error message: “TypeError: Tx is not a constructor” on the code “const tx =...
Asked on 08/26/2021
1 answerGet help from others!
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