User Zach

3

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2

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12k

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Can someone explain 'signing a transaction' and how its different from sending ether?

solidity javascript

Apr 1 '18 at 16:26 lungj 6,155

4

votes

1

answer

414

views

How to automatically get user's wallet info if they are connected but NOT show the metamask pop up if they are not?

web3js metamask javascript

Nov 20 at 9:11 Sergi Juanati 1,280

2

votes

1

answer

338

views

Revert on non-fungible token, when sending external call from second contract

solidity contract-development dapp-development

Jan 6 at 5:03 Community♦ 1

2

votes

1

answer

446

views

Web3 sending TX times out after 280 seconds because network lag

go-ethereum web3js

Nov 24 at 9:08 Community♦ 1

2

votes

1

answer

230

views

Signing a message to sell NFT/token - what happens if you transfer the NFT later?

dapp-development signature nft

Jun 27 at 11:06 clement 1,589

2

votes

1

answer

648

views

Trying to mint 721 tokens from external contract gives invalid opcode

solidity go-ethereum dapp-development erc-721

Mar 2 '18 at 18:17 William Entriken 1,719

1

vote

2

answers

409

views

How to dynamically load contracts data with their ABI from etherscan API?

go-ethereum ether javascript etherscan

Dec 4 at 23:07 Community♦ 1

1

vote

1

answer

54

views

Finding values within an Array/Mapping based off min and max values

solidity arrays mapping

Oct 21 at 7:21 Zach 163

1

vote

0

answers

32

views

How to update multiple values in a mapping without a loop?

solidity mapping

Jul 21 at 16:58 Zach 163

1

vote

2

answers

859

views

How do I know if this fake token is ERC20?

solidity erc-20

Feb 19 '18 at 18:18 Community♦ 1

1

vote

2

answers

507

views

Setting the address for a contract - within another contract

solidity go-ethereum remix

Feb 8 '18 at 8:05 Community♦ 1

1

vote

1

answer

270

views

Review my token? Everything 'seems' to work on the testnet. Any issues?

go-ethereum ether tokens

Jan 18 '18 at 8:24 Community♦ 1

0

votes

1

answer

14

views

How to pass quotes inside a string via remix?

solidity remix

Jan 31 at 12:35 Miroslav Nedelchev 1,686

0

votes

0

answers

19

views

Web3 error: “value out of bounds” when passing in value for smart contract call

web3js javascript

Jan 19 at 3:07 Zach 163

0

votes

1

answer

42

views

Cannot sign data using eth_signTypedData_v3 in coinbase wallet but can in every other dapp wallet?

wallets dapps signature

Dec 21 at 4:40 Zach 163

0

votes

1

answer

21

views

Value created from web3.hexToNumberString - how to convert back to value in solidity?

solidity web3js

Dec 20 at 7:11 Zach 163

0

votes

1

answer

2k

views

Metamask shows “ALERT: Transaction Error. Exception thrown in contract code” but transaction succeeds without error

solidity metamask

Nov 7 at 18:00 Community♦ 1

1

0

votes

0

answers

134

views

Remix never returns a transaction - but everything works - why?

solidity remix erc-20

Sep 15 '19 at 4:45 Zach 163

0

votes

1

answer

190

views

How would you generate this transaction hash?

web3js ethereumjs react

Nov 16 '18 at 12:07 Xavier Leprêtre B9lab 6,456

0

votes

2

answers

1k

views

Help using and reading Arrays[] and mappings

solidity go-ethereum mapping

Jan 22 '18 at 16:18 Community♦ 1

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20 Questions

Can someone explain 'signing a transaction' and how its different from sending ether?

How to automatically get user's wallet info if they are connected but NOT show the metamask pop up if they are not?

Revert on non-fungible token, when sending external call from second contract

Web3 sending TX times out after 280 seconds because network lag

Signing a message to sell NFT/token - what happens if you transfer the NFT later?

Trying to mint 721 tokens from external contract gives invalid opcode

How to dynamically load contracts data with their ABI from etherscan API?

Finding values within an Array/Mapping based off min and max values

How to update multiple values in a mapping without a loop?

How do I know if this fake token is ERC20?

Setting the address for a contract - within another contract

Review my token? Everything 'seems' to work on the testnet. Any issues?

How to pass quotes inside a string via remix?

Web3 error: “value out of bounds” when passing in value for smart contract call

Cannot sign data using eth_signTypedData_v3 in coinbase wallet but can in every other dapp wallet?

Value created from web3.hexToNumberString - how to convert back to value in solidity?

Metamask shows “ALERT: Transaction Error. Exception thrown in contract code” but transaction succeeds without error

Remix never returns a transaction - but everything works - why?

How would you generate this transaction hash?

Help using and reading Arrays[] and mappings