Top new questions this week:
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This is about Uni V2 pools.
So usually we call the function addLiquidity to add liquidity, but the function decides how many tokens should be added depending on the reserves.
What if we directly send ...
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I understand how to estimate gas cost for L2s like Arbitrum and Optimism because their documents provide some details, e.g. total gas cost = L1 poster fee + L2 network fee. But I really cannot find ...
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I have done a bit of research on this, and I have found only the same chain NFT swap but I want to know the different chain swapping b/w two users, Please provide some links or guidance to achieve NFT ...
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Code: https://www.contractreader.io/contract/mainnet/0x0C7D4bdA40CF78F9F1BAf6e3D5774f1E22c9CC4B
My question is about this verifyCalldata() call:
function verifyAddress(
uint256 _projectId,
...
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On maven's release page, web3j 5.0.0 is the highest release version for web3j, which was released in May 2020.
The most recent releases of web3j are in 4.x version series. Interestingly, the web3j ...
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When I was reading the library code, I came across the following comment: "the values being non-zero value makes deployment a bit more expensive, but in exchange the refund on every call to ...
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Hello everyone
I'm new in the smart contract and Dapp development and I'm so confused about choosing a framework. my questions are dumb but I couldn't find the answers by myself. Here is my problem:
I ...
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Greatest hits from previous weeks:
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People often say that Ethereum is a "turing complete" blockchain, or that it comes with a built-in "turing complete" programming language. What does this mean, and why is it an important feature for ...
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An Ethereum application that I want to use talks about needing "gas" to run. What is gas, and where do I get it?
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I sent some amount of ETH to a wallet. I checked the wallets balance on ether chain. I entered the address in the search field and noticed both lowercase and uppercase versions of the address seemed ...
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One of the answers to this question suggested using Geth's --fast flag to help quickly synchronise the block data.
How does the flag work, and how does using it speed up the synchronisation? Are we ...
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If I am writing a smart contract for some kind of (gambling) game, how can I generate a random number securely? What are the best practises and security trade-offs to be aware of?
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Currently reading solidity documentation: https://solidity.readthedocs.io/en/develop/types.html#function-types
By default, function types are internal, so the internal keyword can
be omitted. In ...
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I use the Mist wallet.
I would like to know:
How I can get the private key of my account.
How I can use this private key to sign messages.
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Can you answer these questions?
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Please, tell me, is it possible to do it using Uniswap V2 router (via smart-contract or dapps)
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I looked at docs and it says to use Queries, but I have no idea how to imply it. Could you please help me?
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