User Henk

39 votes

Accepted

How to fill dynamic in-memory array

answered Apr 26, 2018 at 12:34

13 votes

Accepted

Contract event - transactionIndex and logIndex

answered Jul 26, 2018 at 9:38

11 votes

Accepted

what is the role of Migrations.sol contract in truffle project?

answered Aug 13, 2018 at 10:07

10 votes

Accepted

Truffle test: How to test Ether transfer? Balance of specific account?

answered Jun 26, 2018 at 7:43

8 votes

How to check if the call to another contract returned successfully?

answered Aug 15, 2018 at 7:07

6 votes

Does it make a difference to index an event with one parameter?

answered Aug 14, 2018 at 8:19

6 votes

Accepted

Why use VS Code IDE instead of remix?

answered Sep 20, 2018 at 8:57

6 votes

Accepted

Can i receive/use an already existing ERC 20 token in a new smart contract?

answered Oct 22, 2018 at 18:04

5 votes

Function selector for constructor & fallback function?

answered Aug 20, 2018 at 15:41

5 votes

Accepted

Call parent class modifier possible?

answered Aug 24, 2018 at 9:20

5 votes

Can anyone explain what is the main purpose of events in solidity and when to use it?

answered Aug 19, 2018 at 16:37

5 votes

Accepted

Error: Could not find artifacts for ./mycontract from any sources

answered May 16, 2018 at 10:58

5 votes

Accepted

Compare structs and arrays with keccak256 in order to save gas

answered May 30, 2018 at 15:20

5 votes

Accepted

SafeMath library vs SafeMath contract on the inheritance chain

answered Apr 26, 2018 at 13:09

5 votes

Accepted

Add user details to smart Contract

answered Apr 13, 2018 at 8:47

5 votes

Accepted

Error: Invalid number of arguments to Solidity function (mapping)

answered Apr 30, 2018 at 6:36

5 votes

Accepted

Returning ether from a payable function using transfer

answered May 3, 2018 at 10:21

4 votes

Why cannot I get uint returns without 'view' modifier?

answered Apr 30, 2018 at 8:21

4 votes

Accepted

Understanding the ERC20 transferFrom default implementation - why is it working?

answered May 2, 2018 at 6:19

4 votes

What does signing transactions mean ? and where does it happen?

answered Apr 10, 2018 at 7:52

4 votes

How to create a multiple contract with multiple instance

answered Jul 3, 2018 at 6:58

4 votes

Use of delegatecall with msg.data

answered Aug 9, 2018 at 9:41

4 votes

Accepted

Deploying contract with parameters using web3.js and Node.js

answered Aug 1, 2018 at 8:46

4 votes

Accepted

Store and retrieve data in an array in Solidity

answered Aug 24, 2018 at 7:38

3 votes

Accepted

What are the parameters for the approveAndCall function in tokens?

answered Aug 30, 2018 at 10:17

3 votes

how to import multiple files on remix IDE using github url?

answered Oct 4, 2018 at 13:04

3 votes

Accepted

Web3js 1.0 events: closing the contract.events "socket"

answered Oct 15, 2018 at 17:28

3 votes

Estimate Gas Price (not Gas) using Web3

answered Oct 19, 2018 at 18:37

3 votes

Accepted

Solidity Contracts Callback

answered Aug 1, 2018 at 9:47

3 votes

Accepted

The contract code couldn't be stored, please check your gas amount. [Zeppelin, Truffle.js, Ropsten]

answered Aug 2, 2018 at 7:19

Stack Exchange Network

139 Answers

How to fill dynamic in-memory array

Contract event - transactionIndex and logIndex

what is the role of Migrations.sol contract in truffle project?

Truffle test: How to test Ether transfer? Balance of specific account?

How to check if the call to another contract returned successfully?

Does it make a difference to index an event with one parameter?

Why use VS Code IDE instead of remix?

Can i receive/use an already existing ERC 20 token in a new smart contract?

Function selector for constructor & fallback function?

Call parent class modifier possible?

Can anyone explain what is the main purpose of events in solidity and when to use it?

Error: Could not find artifacts for ./mycontract from any sources

Compare structs and arrays with keccak256 in order to save gas

SafeMath library vs SafeMath contract on the inheritance chain

Add user details to smart Contract

Error: Invalid number of arguments to Solidity function (mapping)

Returning ether from a payable function using transfer

Why cannot I get uint returns without 'view' modifier?

Understanding the ERC20 transferFrom default implementation - why is it working?

What does signing transactions mean ? and where does it happen?

How to create a multiple contract with multiple instance

Use of delegatecall with msg.data

Deploying contract with parameters using web3.js and Node.js

Store and retrieve data in an array in Solidity

What are the parameters for the approveAndCall function in tokens?

how to import multiple files on remix IDE using github url?

Web3js 1.0 events: closing the contract.events "socket"

Estimate Gas Price (not Gas) using Web3

Solidity Contracts Callback

The contract code couldn't be stored, please check your gas amount. [Zeppelin, Truffle.js, Ropsten]