tienshaoku

#define constant OWNER_SLOT = 0x00
#define constant WITHDRAWER_SLOT = 0x01
#define constant LAST_DEPOSITOR_SLOT = 0x02

#define macro DEPOSIT() = takes(0) returns(0) {
    callvalue iszero error jumpi        // revert if msg.value == 0
    caller [LAST_DEPOSITOR_SLOT] sstore // store last depositor
    stop
    error:
        0x00 0x00 revert

tienshaoku

import "@uniswap/v3-core/contracts/interfaces/IUniswapV3Pool.sol";
import "@uniswap/v3-core/contracts/libraries/TickMath.sol";
import "@uniswap/v3-core/contracts/libraries/FixedPoint96.sol";
import "@uniswap/v3-core/contracts/libraries/FullMath.sol";

contract TwapGetter {
    function getSqrtTwapX96(address uniswapV3Pool, uint32 twapInterval) public view returns (uint160 sqrtPriceX96) {
        if (twapInterval == 0) {
            // return the current price if twapInterval == 0
            (sqrtPriceX96, , , , , , ) = IUniswapV3Pool(uniswapV3Pool).slot0();

tienshaoku

parent {
  height: 100vh;
  display: flex; 
  flex-direction: column;
}

child-above-footer {
  flex: auto;
}

tienshaoku

parent {
  height: 100vh;
}

footer-child {
  position: absolute;
  bottom: 2vh;
}

tienshaoku

above {
  height: 90vh;
}

footer {
  height: 10vh;
}

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

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

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 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

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

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