Ethereum

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Awarded 1478 times.
Remix Warning: This looks like an address but has an invalid checksum
Awarded 12 hours ago
Hardhat vs foundry, which to use for testing?
Awarded Nov 6 at 15:16
Foundry not outputting console.log
Awarded Nov 3 at 11:25
is there a way to get the result of web3's encodeFunctionCall with ethers?
Awarded Nov 3 at 0:34
Substring in solidity
Awarded Oct 30 at 5:42
I got scammed or suspect scam on Ethereum. What to do?
Awarded Oct 26 at 17:27
Commit-Reveal contract still vulnerable to front running. How can it be improved?
Awarded Oct 26 at 7:20
Invalid array length, expected integer literal
Awarded Oct 17 at 14:28
TypeError: Web3 is not a constructor when trying to use node.js with truffle-contract
Awarded Oct 15 at 4:42
How much gas does it cost to emit an event?
Awarded Oct 14 at 14:26
Composition Over Inheritance - Gas Efficiency
Awarded Oct 2 at 0:48
Why (conceptually) can't mappings be local variables?
Awarded Sep 29 at 15:48
How to fix "TypeError: Cannot read property 'sendTransaction' of null" when deploying a contract on Ropsten with hardHat?
Awarded Sep 28 at 12:33
TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')
Awarded Sep 26 at 20:56
API to gather list of top token holders
Awarded Sep 25 at 15:50
What is the value of "address(this)" when delegate calling?
Awarded Sep 21 at 19:19
Explicit type conversion not allowed from "bytes1" to "uint256"
Awarded Sep 18 at 16:15
Inside a smart contract, is it possible to get latest mined block's number and its hash?
Awarded Sep 13 at 14:23
How do I use BigNumber values in Hardhat tests?
Awarded Sep 12 at 9:12
What's the best way to transform bytes of a signature into v, r, s in solidity?
Awarded Sep 11 at 14:35
Miner-modifiability of block timestamp after the Merge
Awarded Sep 6 at 14:07
Signing messages as a Gnosis Safe (eip1271 support)
Awarded Aug 30 at 10:35
How to increase gas limit in block using geth?
Awarded Aug 18 at 19:16
How to use ethers keccak256?
Awarded Aug 16 at 20:00
What does it really mean to burn tokens?
Awarded Aug 11 at 12:05
simulate transaction without sending to blockchain
Awarded Aug 11 at 2:57
Building a raw contract transaction with ethers.js
Awarded Aug 5 at 15:50
ProviderError: Error: Transaction reverted: function selector was not recognized and there's no fallback function
Awarded Aug 1 at 5:26
Uniswap V2 calculate quantity tradable at target execution price in Solidity?
Awarded Jul 30 at 10:51
access struct from mapping in a different contract
Awarded Jul 25 at 19:18
How can i transfer ERC20 tokens from a contract to an user account?
Awarded Jul 18 at 17:36
What is the reason behind writing "using Counters for Counters.counters" when using the Counters openzeppelin library
Awarded Jul 15 at 13:06
Testing for custom error reverts in hardhat
Awarded Jul 13 at 8:50
Passing Struct as an argument in call
Awarded Jul 11 at 18:25
What is a function signature and function selector in solidity (and EVM languages)?
Awarded Jul 11 at 14:56
Will revert() refund all gas of the transaction or just the remaining gas?
Awarded Jul 10 at 13:11
How can I get a private key from a mnemonic phrase?
Awarded Jul 10 at 12:09
Can a contract access the code of another contract?
Awarded Jul 9 at 16:33
Iterating over all public values of a mapping in web3
Awarded Jul 6 at 23:16
Access to public variable from other contract
Awarded Jul 4 at 15:51
Can CREATE2 with the same salt override existing contract?
Awarded Jun 30 at 22:57
During ECDSA signing, how do I generate the Recovery ID?
Awarded Jun 29 at 0:43
Explicit type conversion not allowed from "int_const -1" to "uint128"
Awarded Jun 28 at 12:05
Testing Error thrown with hardhat
Awarded Jun 26 at 11:49
Hardhat: Error: unresolved libraries, but why?
Awarded Jun 25 at 21:40
Received invalid block tag 87. Latest block number is 0
Awarded Jun 21 at 13:18
How to check if a contract has a method?
Awarded Jun 19 at 11:21
Does view functions cost gas? And how to send transaction in a proper way?
Awarded Jun 12 at 9:05
What exactly is a proxy contract and why is there a security vulnerability involved in it?
Awarded Jun 11 at 8:51
ethers formatEther(wei) with max 4 decimal places
Awarded Jun 11 at 7:05
Revert reason for arithmetic overflows in Solidity v0.8
Awarded Jun 8 at 1:57
About Abi Encoder V2
Awarded Jun 1 at 14:31
How to start with ERC-4337?
Awarded May 30 at 1:25
How to fix: Warning! Error encountered during contract execution [Out of gas]
Awarded May 26 at 14:50
Correct syntax for estimating gas cost of a function in Web3?
Awarded May 26 at 13:55
When to use abi.encode, abi.encodePacked or abi.encodeWithSignature in solidity
Awarded May 24 at 12:57
What does "Enable optimization" mean in Remix, and what does it do?
Awarded May 19 at 3:28
Hardhat Test returns transaction instead of return value
Awarded May 18 at 3:00
Solidity - Return value of Smart Contract Transaction
Awarded May 15 at 15:33
How to call a contract function/method using ethersjs
Awarded May 9 at 19:20
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