Top new questions this week:
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I want to call another solidity contract's method using Call/DelegateCall. Although the transaction seems successful, but I did not get the expected result, and it shows "Although one or more ...
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When I start a transaction, MetaMask shows it with Cancel button.
When does this Cancel button disappear? Maybe after one confirmation? After N (what is N?) confirmations?
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I wanted to pull the historical data stored by the reference data contracts by chainlink oracles. Since all the data is on-chain, I should be able to view it all? But currently, my contract can only ...
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I recently stumbled across ds-math's rpow() being a O(lg n) safe implementation of exponentiation.
Such a function is ultimately created because the EVM EXP opcode is unsafe wrt. overflows. The ...
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When declaring fallback function we needs to make sure that it is declared external but why fallback function cannot be declared as public. Since external is a subset of public why can't we declare ...
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Say I want to take a cut of an NFT each time the token is transferred. If I were to change the openzeppelin erc721 transfer function to transfer 1% of the NFTs holding to myself, can that standard ...
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I was running debug_traceTransaction on the transactions in the first 100,000 blocks, and I came across 25 that were flagged as failed, but etherscan.io says they are fine. The gas used is below gas, ...
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Greatest hits from previous weeks:
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I transferred tokens (GNT) from an exchange to a metamask account but I can't figure out how to get them out. They do not show up in metamask, but etherscan shows them. I tried to import the account ...
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I know basically zero about Ethereum, block chain etc. I have Augur reps. I have been asked to create an Ethereum address for the sale augur site. I don't have the slightest idea how to generate an ...
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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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I've heard that Ethereum mining is ASIC resistant since it requires memory-hard hashing algorithms. However, why can't miners buy large DRAM and devote the memory to ASIC mining? What prevents miners ...
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I'm trying to send Ether using geth 1.3.5, like this:
eth.sendTransaction({
from: eth.accounts[0],
to:'0x[ADDRESS_HERE]',
value: web3.toWei(5, "ether"),
gas:21000
});`
And I'm getting ...
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How fast is Ethereum blockchain growing and how big is it likely to get in the future? Is it still about 1 GB per month? Are there any data pruning or compression algorithms in place or planned to be ...
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ABI is referenced in many places including the official Ethereum website. What is an ABI and why is it necessary to use?
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Can you answer these questions?
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This seems to happen randomly during an influx of new transactions. I am running a node with high txpool limits.
--txpool.globalslots 1000000 --txpool.accountslots 128 --txpool.accountqueue 512 ...
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when I try to send my transaction using infura I get this error
"The send transactions "from" field must be defined"
My problem is my web3 object. When I used Metamask and ...
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