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Ethereum : Recent Questions and Answers (Page 21)

Find answers to your questions about Ethereum or help others by answering their Ethereum questions.

C++ (or generally OOP) inheritance in Solidity

In Solidity, when one does inheritance, the two contracts share state. Some pseudocode,contract A {uint myVar = 1setVar() {myVar = 3}}contract B is A {myVar = 2} If I...

Asked on 02/13/2021 by luca590

1 answer

How is the Ethereum Name Service Avatar records used?

What is the use or how is the avatar field in the ENS TEXT...

Asked on 02/12/2021 by user65561

0 answer

Nethereum C# FilterInput.GetAllChanges always empty

I use Nethereum in my project to get all pending transactions on a specific smartcontract address. To do that based on the existing docs and Nethereum playground I try the...

Asked on 02/12/2021 by ExaltedOil

1 answer

Can't understand the problem with the code

I am reading the following tutorial. Tutorial What is the problem with the following code:function withdraw(uint amount) public { require(balances[msg.sender] >= amount);...

Asked on 02/10/2021

0 answer

Testing Gas Token on testnet failing transaction

I am trying to test my contract with gas token but I am getting fail txs which doesn't tell much the cause. This contract works properly if I do not...

Asked on 02/09/2021 by Marr

0 answer

How do I monitor the status of a Geth sync in fast mode?

I started up a fresh Geth node and it's syncing in fast mode. I'm currently here:INFO [10-26|18:11:04.053] Imported new state entries ...

Asked on 02/06/2021 by iameli

1 answer

I am unable to install web3 on my mac

I tried to install web3 in my mac by using sudo npm install web3 but failed many a times . Please help me to sort this matter out . i...

Asked on 02/05/2021 by Saiteja Kuruva

1 answer

Is Ethereum blockchain really temper proof or immutable?

Suppose there is a user A which transfers some ethers to user B through a proper transaction.So is it possible to alter the transaction. Something like going back to...

Asked on 02/03/2021 by krritik

1 answer

Out of stack DUP2 1/1024 when adding string to parameter

The below function was working fine until I added a string parameter and saved the string to a mapping. Now when I call it it fails with an 'out of...

Asked on 02/01/2021 by koukotsu

0 answer

How to find contract's address?

I successfully setup a private blockchain and created the "hello world" contract according to tutorial from etherium web site. One thing that I can't figure out is how to...

Asked on 01/31/2021 by user3280964

6 answer

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