Hottest Questions This Month

1

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1

answer

710

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About contract kill and forensic investigation

modified Feb 9 at 20:28 eth♦ 54.8k

2

votes

2

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146

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Undefined results for “web3.eth.accounts” in truffle console

web3js truffle

answered Jan 27 at 10:10 Alex W 29

4

votes

1

answer

208

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Why does solidity check only the first 4 bytes of the calldata to determine the method?

solidity blockchain evm

modified Jan 23 at 13:11 Rick Park 1,505

5

votes

2

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85

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How is it possible to pay 2,100 Ether ($309,267) for a transaction fee?

transactions gas gas-limit gas-price fees

modified yesterday alper 2,370

3

votes

2

answers

57

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Do logs/events last forever?

events

answered Jan 29 at 22:52 Rob Hitchens B9lab 28.1k

0

votes

1

answer

197

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Truffle does nothing and shows no output when running tests

solidity truffle

answered Feb 5 at 16:07 Prachiti 36

2

votes

3

answers

89

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What other constants depend on the current call like msg.sender?

contract-design contract-invocation constant

answered Jan 24 at 19:11 Rob Hitchens B9lab 28.1k

0

votes

3

answers

119

views

How to upgrade solidity compiler solc to version 0.5.x?

solidity truffle

modified Jan 24 at 13:40 Bitcoiners 13

2

votes

1

answer

151

views

What does the assert() indicate here?

solidity remix erc-223

modified Feb 5 at 6:01 Aniket 2,174

2

votes

2

answers

116

views

Why are transaction tries in Ethereum not plain Merkle Tries?

transactions storage patricia-merkle-tries state-trie storage-trie

answered Feb 7 at 11:32 martellalex 28

1

vote

4

answers

107

views

Is there a way to use constructor function as a fallback, example: "function Mycontract public payable () {}

solidity remix

modified Feb 7 at 13:11 Rick Park 1,505

1

vote

1

answer

103

views

How can i implement deadlines in smartContract?

solidity contract-development blockchain blocks timestamp

modified Feb 3 at 18:53 shane 1,891

1

vote

2

answers

61

views

Passing Struct as an argument in call

solidity struct abi experimental-features

modified yesterday eth♦ 54.8k

5

votes

1

answer

43

views

How to jump to any arbitrary location in already deployed contracts

solidity security evm

modified Jan 29 at 8:56 Rick Park 1,505

0

votes

2

answers

66

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solidity code compilation error?

solidity remix truffle-contract

modified Jan 25 at 21:21 ivicaa 5,388

5

votes

2

answers

38

views

Is it safe to commit truffle build files to Github (open source)?

solidity truffle privacy truffle-compile

modified Jan 29 at 8:53 goodvibration 3,807

2

votes

2

answers

73

views

What is the unit used when using the SetBalance() function of the state package?

solidity go-ethereum ether

answered Jan 25 at 18:17 Richard Horrocks 21.8k

1

vote

2

answers

87

views

Variables in interfaces

interfaces

answered Feb 11 at 12:13 goodvibration 3,807

1

vote

1

answer

84

views

Can anyone please explain me the following solidity code?

solidity

modified Jan 27 at 20:58 Rosco Kalis 982

2

votes

0

answers

130

views

solidity-coverage show 0% coverage

solidity

modified Jan 28 at 12:41 Катерина Белоцкая 11

1

vote

1

answer

164

views

DOMException: Failed to execute 'postMessage' on 'Window' error when using Metamask and truffle Ganache

truffle metamask ganache

modified Feb 1 at 4:37 Yuki 4

1

vote

1

answer

76

views

Why transactions/contracts aren't priced/tracked based on computer running time

transactions contract-design database

answered Feb 17 at 15:16 Lauri Peltonen 5,509

0

votes

2

answers

52

views

How can I select a single account in Ganache? [closed]

web3js truffle dapp-development javascript ganache

modified Feb 4 at 21:05 Rob Hitchens B9lab 28.1k

2

votes

1

answer

64

views

Rolling a die at some point in the future

randomness

modified Feb 10 at 15:58 Lauri Peltonen 5,509

2

votes

2

answers

45

views

Truffle - test only function?

solidity truffle

answered Jan 26 at 22:51 Rosco Kalis 982

1

vote

0

answers

95

views

Beacon Chain in Solidity

ethereum2.0

modified Feb 1 at 17:37 Igor Barinov 1,240

1

vote

1

answer

43

views

How to change the nonce between transactions in web3j?

web3j java

modified Jan 28 at 22:03 Greg Jeanmart 5,082

1

vote

1

answer

70

views

Converting an address type variable to payable address type throws me error [closed]

solidity contract-development address.transfer

modified Feb 1 at 6:32 Prasanth A S 11

1

vote

1

answer

54

views

Issue in type conversion : Explicit type conversion not allowed from unit256 to bytes1

solidity remix design-patterns

modified yesterday eth♦ 54.8k

0

votes

1

answer

32

views

Is it possible to send Ether using delegatecall?

evm payable delegatecall modifiers

answered Jan 24 at 9:46 ChenchenYo 314

1

vote

2

answers

67

views

Solidity public variable getter call doesn't return

solidity remix rinkeby

answered Feb 6 at 11:12 Nicholas Mueller 16

4

votes

1

answer

51

views

block-header hash verification

hash hash-algorithm block-header

answered yesterday AnuragP 46

2

votes

1

answer

64

views

Is gas burned in a PoA network?

gas poa

answered Jan 24 at 21:12 ivicaa 5,388

0

votes

0

answers

76

views

Type address is not implicitly convertible to expected type address payable [closed]

solidity ethereum-wallet-dapp ethereumjs

asked Feb 1 at 6:40 Prasanth A S 11

3

votes

1

answer

46

views

Switching from 'storage' to 'memory' increases the gas-cost

solidity gas storage memory

modified Jan 30 at 20:45 ivicaa 5,388

1

vote

1

answer

58

views

ParserError: Expected pragma, import directive or contract/interface/library definition

solidity remix

modified Jan 25 at 18:54 anticrypt 8

0

votes

1

answer

35

views

How to start auditing smart contract?

contract-development contract-design security

modified Feb 9 at 20:28 eth♦ 54.8k

1

vote

2

answers

57

views

TypeError: Name has to refer to a struct, enum or contract when compiling a contract

solidity contract-development truffle

modified Jan 30 at 11:34 Rosco Kalis 982

0

votes

2

answers

44

views

What should I input to these parameters in my MultiSigWallet Contract's function?

multisignature

modified 6 hours ago J A Gonzalez 1

3

votes

1

answer

44

views

How does the network validate a block in PoS

blockchain proof-of-stake proof-of-work

answered Feb 3 at 21:27 Yanzal 83

0

votes

3

answers

42

views

withdraw function does not work on ganache

solidity

modified Feb 14 at 15:18 Devraj Singh Rawat 16

1

vote

3

answers

53

views

Calldata with too many parameters

solidity evm calldata

answered Jan 26 at 14:25 fiction 18

0

votes

1

answer

53

views

How to use sendTransaction to send ERC20 tokens through Metamask?

web3js erc-20 metamask

answered Jan 30 at 9:54 Hamza Ahmed 180

1

vote

2

answers

25

views

Why I can not trade coins stored in cold wallet?

wallets ethereum-wallet-dapp

modified Feb 8 at 20:01 MSwezey 751

0

votes

2

answers

32

views

Soldity: += not compatible with int type

solidity remix

modified Jan 30 at 14:26 Rick Park 1,505

0

votes

1

answer

41

views

Public smart contract that calls Private contract API

private-blockchain contract-invocation quorum

modified Jan 29 at 15:09 Rob Hitchens B9lab 28.1k

0

votes

4

answers

41

views

Programming contracts and blockchain: Where do I start?

solidity

answered Feb 6 at 17:38 Rob Hitchens B9lab 28.1k

1

vote

1

answer

40

views

Error processing transaction request: sender doesn't have enough funds to send tx

web3j ganache

answered Jan 30 at 10:58 Greg Jeanmart 5,082

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