分趣投開發原理丨分趣投系統開發（開發案例）丨分趣投系統原始碼部署

　　什麼是DAPP？DAPP是Decentralized Application的縮寫，中文叫分散式應用/去中心化應用。通常來說，不同的DAPP會採用不同的底層技術開發平臺和共識機制，或者自行釋出代幣。

　　As a smart contract code

　　Blockchain can run code.Although the initial blockchain was used for simple programs,mainly token transactions,technological advancements allowed it to execute more complex transactions and identify well-developed programming languages.

　　Because these programs run on the blockchain,their characteristics are different from other software.Firstly,the program itself is recorded on the blockchain,thus possessing the permanence and non auditing properties of the blockchain;Secondly,the program can control blockchain assets,such as storing and transmitting cryptocurrencies;Thirdly,the program is executed by blockchain.This means that no one can follow the pre written content and interfere with its operation.

　　關於區塊鏈專案技術開發唯:MrsFu123，代幣發行、dapp智慧合約開發、鏈遊開發、單雙幣質押、多鏈錢包開發、NFT盲盒遊戲、公鏈、鏈上游戲開發

　　Uniswap博餅、交易所開發、量化合約開發、合約對沖、互助遊戲開發、Nft數字藏品開發、眾籌互助開發、元宇宙開發、swap開發、DAO智慧合約、

　　夾子合約、鏈上合約開發、ido開發、商城開發等，開發過各種各樣的系統模式，更有多種模式、制度、案例、後臺等，成熟技術團隊，歡迎實體參考。

　　資料作為新型生產要素，能為實體經濟帶來放大、疊加和倍增作用，是做強做優做大數字經濟的關鍵。建立資料可信流通體系，增強資料的可用、可信、可流通、可追溯水平，是啟用資料要素潛能、賦能實體經濟的重要途徑。區塊鏈技術具有去中心化、共識機制、不可篡改、可以追溯、規則透明等特點。

　　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 allowance(address owner,address spender)external view returns(uint);

　　function approve(address spender,uint value)external returns(bool);

　　function transfer(address to,uint value)external returns(bool);

　　function transferFrom(address from,address to,uint value)external returns(bool);

　　function DOMAIN_SEPARATOR()external view returns(bytes32);

　　function PERMIT_TYPEHASH()external pure returns(bytes32);

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

　　function permit(address owner,address spender,uint value,uint deadline,uint8 v,bytes32 r,bytes32 s)external;

　　event Mint(address indexed sender,uint amount0,uint amount1);

　　event Burn(address indexed sender,uint amount0,uint amount1,address indexed to);

　　event Swap(

　　address indexed sender,

　　uint amount0In,

　　uint amount1In,

　　uint amount0Out,

　　uint amount1Out,

　　address indexed to

　　);

　　event Sync(uint112 reserve0,uint112 reserve1);