Following is my code:

pragma solidity >=0.4.17;

contract Lottery {
    address public manager;
    address[] public players;

    constructor () public {
        manager = msg.sender;

    function enter() public payable {
        require(msg.value > 0.01 ether);

    function random() private view returns (uint256) {
        returns unit(keccak256(abi.encodePacked(block.difficulty, now, players)));


And I am getting following error:

browser/ballot.sol:17:9: ParserError: Expected primary expression.
        returns unit(keccak256(abi.encodePacked(block.difficulty, now, players)));

Current version is 0.5.1+commit.c8a2cb62.Emscripten.clang

How to resolve this error?

  • 3
    What is unit??? Feb 23, 2019 at 11:15
  • Hey man! I know it's been two years already, but I believe Rosco Kalis gave you a valid answer don't you think? Please accept the answer if it solved your problem. Thanks
    – mbappai
    Mar 21, 2022 at 7:15

1 Answer 1


The keyword you have to use to return a value is return, not returns. And as goodvibration mentioned, you probably meant to write uint, instead of unit. The following should work:

function random() private view returns (uint256) {
    return uint(keccak256(abi.encodePacked(block.difficulty, now, players)));

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