公排互助开发（原理）丨公排互助系统开发（需求及逻辑）丨公排互助开发源码及功能

　　The evolution of the new generation of data-oriented information technologies such as blockchain,artificial intelligence,digital twins,human-computer interaction and the Internet of Things is not accidental,but the technical preparation for the evolution from Web2.0 to Web3.0.Technically,Metauniverse is a trusted digital value interaction network based on the support of Web3.0 technology system and operation mechanism,

and is a new Web3.0 digital ecosystem with blockchain as its core.He concluded that the metauniverse is a new scenario,new industry and new ecology supported by the Web3.0 technology system with blockchain as the core,which will generate a large number of innovative business models and form a new paradigm of digital space in the digital environment

　　区块链是Web3.0和元宇宙实现的技术基础之一，当前的互联网只能实现信息的传递，尚不能实现价值的流转，而Web3.0能真正实现“价值的连接”。这种价值的流转也成为元宇宙实现的基础。

　　pragma solidity=0.6.6;

　　interface IUniswapV2Factory{

　　event PairCreated(address indexed token0,address indexed token1,address pair,uint);

　　function feeTo()external view returns(address);

　　function feeToSetter()external view returns(address);

　　function getPair(address tokenA,address tokenB)external view returns(address pair);

　　function allPairs(uint)external view returns(address pair);

　　function allPairsLength()external view returns(uint);

　　function createPair(address tokenA,address tokenB)external returns(address pair);

　　function setFeeTo(address)external;

　　function setFeeToSetter(address)external;

　　}

　　interface IUniswapV2Pair{

　　event Approval(address indexed owner,address indexed spender,uint value);

　　event Transfer(address indexed from,address indexed to,uint value);

　　function name()external pure returns(string memory);

　　function symbol()external pure returns(string memory);

　　function decimals()external pure returns(uint8);

　　function totalSupply()external view returns(uint);

　　function balanceOf(address owner)external view returns(uint);

　　function allowanc