User Jesbus

74 votes

What's the difference between 'address' and 'address payable'?

answered Dec 15, 2018 at 12:05

52 votes

Who is msg.sender when calling a contract from a contract

answered Oct 21, 2017 at 20:42

32 votes

Accepted

Show gas used in solidity

answered May 12, 2018 at 18:32

24 votes

Accepted

Is there any profit from using pure and view functions modifiers?

answered Oct 15, 2017 at 13:32

19 votes

Max/min values of standard data types

answered Oct 5, 2017 at 7:21

15 votes

Accepted

Does knowing half private key provide any useful information?

answered Nov 1, 2017 at 10:40

15 votes

Accepted

What is the regex to validate an Ethereum transaction hash?

answered Dec 24, 2017 at 14:14

13 votes

Accepted

How to pop from (decrease the length of) a memory array in Solidity

answered Jun 23, 2018 at 10:30

12 votes

Accepted

How do I share an enum definition between contracts?

answered Oct 25, 2017 at 6:22

11 votes

Accepted

How can I check if a user is logged in to Metamask?

answered Sep 28, 2017 at 16:10

10 votes

What is nonce in Ethereum? How does it prevent double spending?

answered Sep 29, 2017 at 13:06

10 votes

Accepted

How is hosting of a DApp done?

answered Sep 29, 2017 at 13:20

10 votes

How to write an optimized (gas-cost) smart contract?

answered Oct 19, 2017 at 16:02

9 votes

Accepted

How to check if a bytes32 represents an empty string?

answered Sep 27, 2017 at 10:09

9 votes

Accepted

What about calls you can do safely in constructor?

answered Dec 12, 2018 at 8:59

8 votes

Error when calling the selfdistruct method in solidity

answered Dec 13, 2018 at 21:02

8 votes

Is there a way to view the private key of test account in Remix (javascript VM)

answered Dec 16, 2020 at 0:28

7 votes

Accepted

What is the gas cost of keccak256("abc")?

answered Dec 13, 2018 at 11:45

7 votes

Accepted

how to join two bytes32 values in solidity?

answered Dec 12, 2018 at 10:06

7 votes

Accepted

How to stop miner who does not execute operations?

answered Dec 21, 2017 at 14:58

7 votes

Accepted

Where is the barrier between using uint256 and bytes32?

answered Oct 12, 2017 at 17:46

7 votes

Accepted

How does the EVM ensure perfect determinism and what does that mean?

answered Nov 15, 2017 at 14:12

6 votes

Is gas usage deterministic?

answered Nov 20, 2017 at 8:53

6 votes

Accepted

Build a hash from a string and a number uint256 on Solidity

answered Oct 16, 2017 at 16:16

6 votes

Accepted

Are duplicate addresses rare or not?

answered Nov 3, 2017 at 22:18

6 votes

Accepted

What is the relationship between Gwei and gas?

answered Nov 4, 2017 at 8:49

6 votes

Accepted

Sign data with a contract account

answered Oct 1, 2017 at 11:40

6 votes

Accepted

smart contract variable storage

answered Oct 12, 2017 at 17:35

6 votes

What is the purpose of giving name to return variables in function declaration?

answered Dec 21, 2017 at 11:46

6 votes

Is there a solidity string limit of 32 bytes?

answered Jun 2, 2018 at 11:29

Stack Exchange Network

203 Answers

What's the difference between 'address' and 'address payable'?

Who is msg.sender when calling a contract from a contract

Show gas used in solidity

Is there any profit from using pure and view functions modifiers?

Max/min values of standard data types

Does knowing half private key provide any useful information?

What is the regex to validate an Ethereum transaction hash?

How to pop from (decrease the length of) a memory array in Solidity

How do I share an enum definition between contracts?

How can I check if a user is logged in to Metamask?

What is nonce in Ethereum? How does it prevent double spending?

How is hosting of a DApp done?

How to write an optimized (gas-cost) smart contract?

How to check if a bytes32 represents an empty string?

What about calls you can do safely in constructor?

Error when calling the selfdistruct method in solidity

Is there a way to view the private key of test account in Remix (javascript VM)

What is the gas cost of keccak256("abc")?

how to join two bytes32 values in solidity?

How to stop miner who does not execute operations?

Where is the barrier between using uint256 and bytes32?

How does the EVM ensure perfect determinism and what does that mean?

Is gas usage deterministic?

Build a hash from a string and a number uint256 on Solidity

Are duplicate addresses rare or not?

What is the relationship between Gwei and gas?

Sign data with a contract account

smart contract variable storage

What is the purpose of giving name to return variables in function declaration?

Is there a solidity string limit of 32 bytes?