AI数字/无人/真人直播系统开发方案详情/项目案例/成熟技术/源码部署

　　Multiple users on the blockchain can jointly participate in the development of smart contracts,and the rights and obligations of both parties are clearly defined in the contract agreement.After both parties agree on the content and objectives of the contract,By developers converting these protocols into code,the code contains conditions that trigger automatic contract execution.

　　当编码完成后，智能合约就会被上传到区块链上，即全网验证节点都会接收这份合约信息。

　　区块链等技术的参与。区块链是Web3.0最突出的关键技术，助力安全、透明和防篡改的交易。Web3.0同时也包含其他机制促进和推动去中心化，如云计算、AR Cloud和其他网络空间关键技术等；

　　constructor(){

　　owner=msg.sender;

　　emit OwnerChanged(address(0),msg.sender);

　　feeAmountTickSpacing[500]=10;

　　emit FeeAmountEnabled(500,10);

　　feeAmountTickSpacing[3000]=60;

　　emit FeeAmountEnabled(3000,60);

　　feeAmountTickSpacing[10000]=200;

　　emit FeeAmountEnabled(10000,200);

　　}/// inheritdoc IUniswapV3Factory

　　function createPool(

　　address tokenA,

　　address tokenB,

　　uint24 fee

　　)external override noDelegateCall returns(address pool){

　　require(tokenA!=tokenB);

　　(address token0,address token1)=tokenA<tokenB?(tokenA,tokenB):(tokenB,tokenA);

　　require(token0!=address(0));

　　int24 tickSpacing=feeAmountTickSpacing[fee];

　　require(tickSpacing!=0);

　　require(getPool[token0][token1][fee]==address(0));

　　pool=deploy(address(this),token0,token1,fee,tickSpacing);

　　getPool[token0][token1][fee]=pool;

　　//populate mapping in the reverse direction,deliberate choice to avoid the cost of comparing addresses

　　getPool[token1][token0][fee]=pool;

　　emit PoolCreated(token0,token1,fee,tickSpacing,pool);

　　}