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rajohs
  • Member for 2 years
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0 votes
1 answer
12 views

Is it more gas efficient to delete a mappping if it maps to a bool instead of setting it to false?

0 votes
1 answer
36 views

Is it best practice to check the token balance when withdrawing ERC20 tokens from a contract?

0 votes
1 answer
418 views

How to generate the correct hash for signatures?

0 votes
1 answer
2k views

How to estimate the gas price with ethers.js v6?

0 votes
3 answers
1k views

How to call ethers.utils.defaultAbiCoder.encode(types, values) in python?

1 vote
0 answers
435 views

Uniswap: get token price for USDC in solidity

1 vote
2 answers
1k views

Can you fetch the whole transaction history of specific contracts somewhere?

1 vote
1 answer
652 views

Decoding logs of Approval event with web3js results in error

0 votes
0 answers
73 views

Why can't I resolve a polygon address on etherscan but I can do so on poygonscan?

1 vote
1 answer
643 views

How to use the alchemy api on a local hardhat node?

0 votes
1 answer
106 views

Should you use keecak256 to hash labels in ENS?

0 votes
1 answer
101 views

ENS nameprep algorigthm. What exactly are the conditions?

0 votes
1 answer
33 views

How can I query the NFTs associated with an account on a local test environment?

1 vote
2 answers
827 views

How do I get the price chainlink price feed when testin with hardhat?

0 votes
1 answer
677 views

Calling a contract with ethers only returns hex value

2 votes
2 answers
566 views

transfer/deposit ether on contract fails