User Greg Jeanmart - Ethereum Stack Exchange

Greg Jeanmart

Member for 7 years, 3 months
Last seen this week

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greg.jeanmart.me
London, United Kingdom

147 Answers

Score Activity Newest

32 votes

Accepted

Steps to deploy a contract using MetaMask and Truffle

answered Jul 30, 2017 at 12:27

31 votes

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how to estimate gas cost?

answered Sep 29, 2017 at 17:03

26 votes

Accepted

What are the popular API to get current exchange rates for Ethereum to USD

answered Feb 2, 2018 at 11:01

24 votes

Accepted

Problem with Truffle Console: Cannot read property 'call' of undefined

answered Feb 6, 2017 at 19:34

21 votes

What is the reason for writing truffle tests in .sol and .js files?

answered Aug 2, 2017 at 22:05

17 votes

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How to calculate with time and dates?

answered Jan 21, 2018 at 18:08

16 votes

Accepted

Error calling a function from another contract: Member "*" not found or not visible after argument-dependent lookup in type

answered Jul 8, 2017 at 17:20

15 votes

Truffle and Node JS

answered Aug 19, 2017 at 11:50

13 votes

web3.isConnected is not a function

answered Sep 10, 2017 at 13:05

10 votes

How to get value of a contract public property using web3.eth

answered Jul 23, 2017 at 12:37

10 votes

Can I deploy a contract using the MetaMask console and if so, how?

answered Jan 2, 2017 at 11:06

10 votes

Accepted

How to create a RawTransaction for contract interaction Web3j

answered Jul 15, 2019 at 9:13

9 votes

What should be the gas and gasPrice for Ropsten Network in Truffle Config?

answered Feb 19, 2018 at 10:08

9 votes

Accepted

Comparison of Metamask vs Ganache

answered Aug 3, 2018 at 10:45

9 votes

Accepted

How much does it cost to store each IPFS hash in Ethereum blockchain

answered Oct 24, 2018 at 8:49

8 votes

How can I get my address via web3?

answered Sep 11, 2017 at 19:37

8 votes

Syncing keeps behind the blockchain

answered Apr 1, 2020 at 13:08

7 votes

How to mine with geth

answered Feb 18, 2018 at 12:53

7 votes

Accepted

How do I "Buy" tokens on the Rinkeby (test) environment?

answered Dec 30, 2017 at 11:22

7 votes

Accepted

How to change the nonce between transactions in web3j?

answered Jan 28, 2019 at 22:03

7 votes

How are truffle artifacts different from ABI?

answered Dec 29, 2018 at 14:38

6 votes

Accepted

IPFS versioning - How to get all files from the IPFS key?

answered Nov 27, 2018 at 23:33

6 votes

Truffle and Ganache - do I need to set the same gas-price and gas-limit in both of them?

answered Jan 22, 2019 at 10:47

6 votes

Accepted

Sign data with private key inside a truffle test file

answered Apr 4, 2018 at 9:55

6 votes

Accepted

Truffle - test - how to get more than 10 accounts?

answered May 13, 2018 at 18:44

6 votes

Accepted

Error encountered, bailing. Network state unknown. Review successful transactions manually

answered Jan 18, 2018 at 10:14

6 votes

Accepted

How to Re-Deploy a Contract to Ropsten using Truffle?

answered Feb 17, 2018 at 11:02

6 votes

Accepted

Why is MeteorJS so popular for making dApps?

answered Oct 18, 2017 at 13:16

6 votes

Accepted

Basic testing with Truffle (not changing contract's state)

answered Aug 22, 2017 at 11:24

6 votes

Accepted

How can dapps work on smartphones?

answered Jun 24, 2017 at 8:25

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