Fiber

Read from chain

Solid allows you to read from the chain without any additional code.

Read an ERC20 balance

Let's read the balance of an ERC20 token.

ReadBalance.sol

pragma solidity ^0.8.0;
 
interface IERC20 {
    function balanceOf(address account) external view returns (uint256);
}
 
contract Main {
    function main() public view returns {
        // Replace with the address of the ERC20 token you want to read the balance of
        uint256 balance = IERC20(0x1).balanceOf(0x2);
 
        Console.logUint(balance);
    }
}

Now we can run the contract.

Terminal

solid run ReadBalance.sol

You should see the following output:

Terminal