remix-project/src/app/example-contracts.js

'use strict'

var ballot = `pragma solidity ^0.4.0
contract Ballot {

    struct Voter {
        uint weight
        bool voted
        uint8 vote
        address delegate
    }
    struct Proposal {
        uint voteCount
    }

    address chairperson
    mapping(address => Voter) voters
    Proposal[] proposals

    /// Create a new ballot with $(_numProposals) different proposals.
    function Ballot(uint8 _numProposals) {
        chairperson = msg.sender
        voters[chairperson].weight = 1
        proposals.length = _numProposals
    }

    /// Give $(voter) the right to vote on this ballot.
    /// May only be called by $(chairperson).
    function giveRightToVote(address voter) {
        if (msg.sender != chairperson || voters[voter].voted) return
        voters[voter].weight = 1
    }

    /// Delegate your vote to the voter $(to).
    function delegate(address to) {
        Voter sender = voters[msg.sender] // assigns reference
        if (sender.voted) return
        while (voters[to].delegate != address(0) && voters[to].delegate != msg.sender)
            to = voters[to].delegate
        if (to == msg.sender) return
        sender.voted = true
        sender.delegate = to
        Voter delegate = voters[to]
        if (delegate.voted)
            proposals[delegate.vote].voteCount += sender.weight
        else
            delegate.weight += sender.weight
    }

    /// Give a single vote to proposal $(proposal).
    function vote(uint8 proposal) {
        Voter sender = voters[msg.sender]
        if (sender.voted || proposal >= proposals.length) return
        sender.voted = true
        sender.vote = proposal
        proposals[proposal].voteCount += sender.weight
    }

    function winningProposal() constant returns (uint8 winningProposal) {
        uint256 winningVoteCount = 0
        for (uint8 proposal = 0; proposal < proposals.length; proposal++)
            if (proposals[proposal].voteCount > winningVoteCount) {
                winningVoteCount = proposals[proposal].voteCount
                winningProposal = proposal
            }
    }
}`

module.exports = {
  ballot: { name: 'ballot.sol', content: ballot }
}