Can I write it in remix ide?

Question

I made a dynamic array variable of address type, i.e.,

address payable[] public participant;

which one is the correct way to write in the following and why,

uint payable[] public participant;

or

uint[] payable public participant;



enter code here

Answer 1

There's address and its extension address payable, which allows you to use the native transfer() method to send ETH to this address.

Since the type is called address payable, you can make an array of this type by appending the [] expression after the type name.

There's no payable extension to uint. If your aim is to define an amount to be sent, that can be stored in a regular uint.

pragma solidity ^0.8;

contract MyContract {
    address payable[] public participants;

    function foo() public {
        uint amount = 1; // 1 wei
        for (uint i = 0; i < participants.length; i++) {
            participants[i].transfer(amount);
        }
    }
}