Web3.0是運(yùn)行在區(qū)塊鏈技術(shù)上的去中心化網(wǎng)絡(luò)，同時(shí)也是混合網(wǎng)絡(luò)，由互聯(lián)網(wǎng)層（Web2）+區(qū)塊鏈層（Web3）組成

　　Web3.0是互聯(lián)網(wǎng)的下一代版本，它建立在Web2.0的基礎(chǔ)之上，通過(guò)利用分布式網(wǎng)絡(luò)和區(qū)塊鏈技術(shù)，提供更為安全、隱私、去中心化的網(wǎng)絡(luò)服務(wù)。Web3.0被視為實(shí)現(xiàn)分布式Web的技術(shù)和范例。

　　nterface 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;

　　}需求開(kāi)發(fā)I35源碼7O98系統(tǒng)O7I8

　　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);案例及源碼;MrsFu123

　　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;