mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
45 lines
1.4 KiB
Solidity
45 lines
1.4 KiB
Solidity
contract Ballot {
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mapping(address => bool) canVote;
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mapping(address => uint) voteCount;
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mapping(address => bool) voted;
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function getVoteCount(address addr) public returns (uint retVoteCount) {
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return voteCount[addr];
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}
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function grantVoteRight(address addr) public {
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canVote[addr] = true;
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}
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function vote(address voter, address vote) public returns (bool success) {
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if (!canVote[voter] || voted[voter]) return false;
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voted[voter] = true;
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voteCount[vote] = voteCount[vote] + 1;
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return true;
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}
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}
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// ----
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 0
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// getVoteCount(address): 2 -> 0
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// vote(address,address): 0, 2 -> false
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 0
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// getVoteCount(address): 2 -> 0
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// grantVoteRight(address): 0 ->
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// grantVoteRight(address): 1 ->
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// vote(address,address): 0, 2 -> true
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 0
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// getVoteCount(address): 2 -> 1
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// vote(address,address): 0, 1 -> false
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 0
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// getVoteCount(address): 2 -> 1
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// vote(address,address): 2, 1 -> false
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 0
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// getVoteCount(address): 2 -> 1
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// grantVoteRight(address): 2 ->
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// vote(address,address): 2, 1 -> true
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// getVoteCount(address): 0 -> 0
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// getVoteCount(address): 1 -> 1
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// getVoteCount(address): 2 -> 1
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