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Add a require statement to the Ballot contract

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Nobuhiko Otoba 2022-04-25 11:10:23 +09:00 committed by Kamil Śliwak
parent d55b84ff63
commit f6c0edc902
1 changed files with 1 additions and 0 deletions
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docs/examples/voting.rst
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@ -109,6 +109,7 @@ of votes.
function delegate(address to) external {
// assigns reference
Voter storage sender = voters[msg.sender];
require(sender.weight != 0, "You have no right to vote");
require(!sender.voted, "You already voted.");
require(to != msg.sender, "Self-delegation is disallowed.");