tienshaoku

var ERC20 = artifacts.require("ERC20");
module.exports = function(deployer) {
  deployer.deploy(ERC20, "Winnie the coin", "WTC", 2, 1000000);
};

tienshaoku

var HDWalletProvider = require("truffle-hdwallet-provider");
var privateKeys = ["First Private Key", "Second Private Key"];

module.exports = {
  networks: {
    development: {
      host: "127.0.0.1",
      port: 7545,
      network_id: "*"
    },

tienshaoku

import ERC20 as ERC20

owner: public(address)
tokenAddress: public(address)
erc20: ERC20

@public
def __init__(_tokenAddress: address):
    self.owner = msg.sender
    self.tokenAddress = _tokenAddress

tienshaoku

var SellToken = artifacts.require("SellToken");

module.exports = function(deployer) {
  deployer.deploy(SellToken, "0x7CC3C57cf280961b85920533A49cd62f176ef0E1");
};

tienshaoku

function addLiquidity() public payable returns(uint[3] memory) {
    require(msg.value == ETHAmount);
    require(Dai.transferFrom(msg.sender, address(this), DaiAmount));
    // Do remember to approve
    Dai.approve(address(uniswapV2Router01), DaiAmount);
    (addLiquidityResult[0], addLiquidityResult[1], addLiquidityResult[2]) = uniswapV2Router01.addLiquidityETH{value: ETHAmount}(
            DaiAddress, DaiAmount, 0, 0, msg.sender, now + 120);
    return addLiquidityResult;
}

tienshaoku

IUniswapV2Router01 immutable uniswapV2Router01;
ERC20 immutable Dai;
CErc20 immutable cDai;
address public WETHAddress;
address public DaiAddress;
address public cDaiAddress;
uint public DaiAmount;
uint public ETHAmount;
uint[3] public addLiquidityResult;

tienshaoku

function swapETHToDai() public payable returns(uint[] memory) {
    // static array: address[k] memory array;
    // The following is the dynamic array way of initialization
    address[] memory _paths = new address[](2);
    // Also, push() is for storage array.
    _paths[0] = WETHAddress;
    _paths[1] = DaiAddress;
    return uniswapV2Router01.swapExactETHForTokens{value: msg.value}(0, _paths, msg.sender, now + 120);
}

tienshaoku

// contract instance
CErc20 immutable cDai;

// constructor() {
cDaiAddress = 0x6D7F0754FFeb405d23C51CE938289d4835bE3b14;
cDai = CErc20(cDaiAddress);
// }

function swapETHToDaiToCompound() public payable returns(bool){
    address[] memory _paths = new address[](2);

tienshaoku

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tienshaoku

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