User Paul Razvan Berg

2

10

votes

4

answers

3k

views

What is the difference between web3.js and ethers.js?

web3js ethers.js

Feb 7 at 2:02 Kinji 21

4

9

votes

1

answer

522

views

What fixed or float point math libraries are available in solidity?

solidity floating-point

1d ago Paul Razvan Berg 6,515

9

votes

1

answer

947

views

Is the ABI required to call a contract with ethers.js?

contract-invocation abi ethers.js

Mar 6 at 14:52 Paul Razvan Berg 6,515

5

7

votes

4

answers

1k

views

Is it possible to batch approve + transfer with CREATE2?

transactions erc-20 create2 erc-20-approve

Feb 19 '20 at 4:33 cryptomaniac 1

6

votes

1

answer

25

views

Does Solidity pre-compute the powers of two defined in the body of functions?

solidity contract-design gas optimization

Mar 27 at 10:41 Paul Razvan Berg 6,515

6

votes

2

answers

481

views

Is Chainlink's price reference data free to consume?

oracles chainlink

Mar 4 at 13:09 Patrick Collins 1,880

6

votes

1

answer

127

views

Where does the line blur between a task and a script in Hardhat?

hardhat

Feb 12 at 20:31 Franco Victorio 484

1

6

votes

1

answer

282

views

What are function signatures in ABIv2 and how do they enhance Ethereum?

abi encoding

Nov 26 '19 at 0:25 Paul Razvan Berg 6,515

1

6

votes

1

answer

101

views

ELI5 what are erasure codes?

sharding erasure-codes

Jun 20 '19 at 14:42 eth♦ 69.5k

2

5

votes

1

answer

446

views

Time-dependent tests with Hardhat?

ganache testing time hardhat

Jan 31 at 10:23 Paul Razvan Berg 6,515

5

votes

2

answers

146

views

Graph traversals on Ethereum, at scale

solidity contract-design design-patterns graphs

Jun 14 at 20:16 Alberto Cuesta Cañada 21

5

votes

1

answer

111

views

Why is the subcall gas limit set to 63/64th of the remaining gas?

security call-depth-attacks stack

Sep 25 '19 at 6:54 k06a 1,458

1

5

votes

1

answer

537

views

What is SMTChecker used for in Solidity?

contract-development smtchecker formal-verification

Sep 1 '19 at 15:27 Ismael 25.5k

1

4

votes

1

answer

38

views

How to take the average of two uint256s without overflowing?

solidity overflow uint256 math

Mar 31 at 7:54 Paul Razvan Berg 6,515

1

4

votes

1

answer

132

views

How to get the zero address from ecrecover?

cryptography ecrecover

Oct 1 at 17:06 Paul Razvan Berg 6,515

4

votes

0

answers

306

views

`eth_getTransactionReceipt` returns the transaction hash not the receipt

testing ganache truffle-test receipts ganache-cli

Sep 4 '19 at 17:38 Paul Razvan Berg 6,515

1

4

votes

2

answers

251

views

Understanding the formal description of a transaction and its associated refunds

yellow-paper selfdestruct receipts gas-refund

Jan 6 '19 at 14:43 Paul Razvan Berg 6,515

4

votes

1

answer

48

views

Does function order also matter when writing upgradeable smart contracts?

upgrading openzeppelin-sdk contract-upgrading

Nov 20 '18 at 7:21 Paul Razvan Berg 6,515

3

votes

1

answer

263

views

SPDX license when importing other people's contracts

solidity contract-design etherscan contract-verification

Dec 9 at 10:17 Rosco Kalis 1,683

3

votes

1

answer

336

views

How does getDefaultProvider work in ethers.js?

etherscan infura web3-providers ethers.js

Dec 3 at 14:23 Rosco Kalis 1,683

3

votes

2

answers

34

views

Can I change the comments in a contract and still pass Etherscan verification?

contract-deployment etherscan contract-verification

Dec 3 at 13:54 Rosco Kalis 1,683

2

3

votes

1

answer

3k

views

What is DSProxy and how does it work?

contract-development contract-design smart-contract-wallets dsproxy

Nov 20 at 10:46 eth♦ 69.5k

3

votes

1

answer

125

views

What is the value of “address(this)” when delegate calling?

solidity delegatecall proxy-contracts

Nov 16 at 14:45 Paul Razvan Berg 6,515

1

3

votes

2

answers

201

views

Do unused structs affect the bytecode?

solidity contract-development

Nov 4 at 7:29 Paul Razvan Berg 6,515

3

votes

1

answer

148

views

Can the block number be set back in ganache?

testing ganache blocks timestamp time

Sep 19 '19 at 17:18 Shane Fontaine 9,045

3

votes

1

answer

157

views

What are remappings and how do they work in solidity?

contract-development solc import

Sep 2 '19 at 12:20 Paul Razvan Berg 6,515

3

votes

1

answer

87

views

What exactly does the “m” function in the formal Bloom filter specifications do?

yellow-paper bloom-filter

Jun 4 '19 at 10:21 HSKim 3

3

votes

1

answer

55

views

How is The Graph a decentralised solution?

contract-design events storage data-feeds

May 4 '19 at 21:06 Rob Hitchens 44.2k

2

3

votes

1

answer

140

views

ELI5 what are VDFs and why are they important for Serenity?

serenity

Jan 5 '19 at 11:59 Paul Razvan Berg 6,515

3

votes

1

answer

735

views

How to initialise a mapping of a struct inside a function?

solidity mapping struct

Nov 10 '18 at 14:16 Paul Razvan Berg 6,515

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140 Questions

What is the difference between web3.js and ethers.js?

What fixed or float point math libraries are available in solidity?

Is the ABI required to call a contract with ethers.js?

Is it possible to batch approve + transfer with CREATE2?

Does Solidity pre-compute the powers of two defined in the body of functions?

Is Chainlink's price reference data free to consume?

Where does the line blur between a task and a script in Hardhat?

What are function signatures in ABIv2 and how do they enhance Ethereum?

ELI5 what are erasure codes?

Time-dependent tests with Hardhat?

Graph traversals on Ethereum, at scale

Why is the subcall gas limit set to 63/64th of the remaining gas?

What is SMTChecker used for in Solidity?

How to take the average of two uint256s without overflowing?

How to get the zero address from ecrecover?

`eth_getTransactionReceipt` returns the transaction hash not the receipt

Understanding the formal description of a transaction and its associated refunds

Does function order also matter when writing upgradeable smart contracts?

SPDX license when importing other people's contracts

How does getDefaultProvider work in ethers.js?

Can I change the comments in a contract and still pass Etherscan verification?

What is DSProxy and how does it work?

What is the value of “address(this)” when delegate calling?

Do unused structs affect the bytecode?

Can the block number be set back in ganache?

What are remappings and how do they work in solidity?

What exactly does the “m” function in the formal Bloom filter specifications do?

How is The Graph a decentralised solution?

ELI5 what are VDFs and why are they important for Serenity?

How to initialise a mapping of a struct inside a function?