Linked Questions
16 questions linked to/from <address>.send vs <address>.transfer best practice usage?
0
votes
1answer
249 views
What is the core difference between send and transfer method of address payable in solidity? [duplicate]
I'm learning solidity I got two methods for transferring ether
<address payable>.send(1 ether)
<address payable>.transfer(1 ether)
Both are used to transferring ether to the recipient ...
5
votes
3answers
19k views
How to transfer Ether between accounts in Solidity?
I'd like get ether balance of account in solidity. I tried the following, but it didn't work. Could you tell me how to do it?
contract MultiplyContract{
address public buyer;
address public ...
18
votes
3answers
6k views
send VS call - differences and when to use and when not to use
Can somebody please explain the differences between using a send and call for contracts and when to use and not use these different methods?
For example :
msg.sender.send(number);
msg.sender....
14
votes
3answers
9k views
Contract address.transfer method gas cost
Who will pay the gas in the following scenario?
Lets say we have the following simple function. That sends an amount from the contract back to the sender.. just an example.
function withdraw() ...
7
votes
2answers
2k views
Is transfer() still safe after the Istanbul update?
In other words, is using transfer() safe?
function transfer(address contractB) public
{
contractB.transfer(1000);
//balances[msg.sender] -= 1000;
}
How about using call.gas?
function ...
3
votes
2answers
634 views
Explain working of address.send function in solidity
I have been trying to get documentation for address.send() function, but i am unable to do so. Can someone please explain how address.send() function works, and how it can be used to send currency ...
1
vote
0answers
2k views
How to use transfer(), send() and msg.value?
When I deploy a contract with a function with receiver.transfer(), receiver.send() or a msg.value function, the function can't get executed when I try to interact with it (MyEtherWallet and web3 via ...
1
vote
1answer
841 views
How send eth from a smart cotract
For example, I have 10 eth on my smart contract. How I send eth on another address?
1
vote
1answer
765 views
Call address.transfer() with Gas Limit and Price from another function
I have a smart contract where user can transfer ETH to an ICO. Like this
function buyICO(paymentAddress, amount) {
// do some other important things
// transfer the amount to the payment address
...
0
votes
1answer
232 views
The constructor should be payable if you send value - contract sending ether to another contract throwing an error?
I'm trying to implement re-entrancy hack for my own contract.
Here is a great article that explains the method: https://medium.com/@gus_tavo_guim/reentrancy-attack-on-smart-contracts-how-to-identify-...
1
vote
1answer
213 views
Why can't we use Transfer() to get a fallback from a contract?
Does this discussion imply that we cannot call transfer() to some contract and call its fallback function and can only do the same by using call() and setting gas?
0
votes
1answer
255 views
how to transfer a specific balance from a smart contract?
Whenever someone buys a smart-contract the amount (in Wei) get stored in SC(Smart Contract) address(this) += msg.value.
Now I am trying to create a function to redeem the balance of the SC
...
0
votes
1answer
162 views
Are there any security issues to send token in fallback function?
I want to have a contract that releases an erc-20 token as soon as someone pays ether to contract. Let's call this contract Bid Contract.
The abstract code goes like:
function askForTokens() public ...
4
votes
0answers
72 views
UNGAS and why was GAS made available to programming smart contracts?
Hardforks, such as Istanbul, have illustrated the best practice that smart contracts should not make any assumptions about gas.
Gas costs have, can, and will change, for example: Is transfer() still ...
0
votes
3answers
39 views
how to send ether from contract to Ethereum account
I have 100 ether in my smart contract now I want to transfer the ether from contract to account automatically
0
votes
0answers
12 views
The Real Cost to Foward Transaction to EOA via Smart Contract?
I'm creating a smart contract that does the following:
Checks that a userID parameter is included as data field OR
that the last 4 zeros of the amount being sent is not equal to zero (i.e, 0....