The continuous development of new technologies such as the Internet, cloud computing, big data and artificial intelligence has injected the industry with the power of rapid growth. At the same time, with the support of technology, the retail industry can effectively monitor the production and consumption of goods, and retailers can control the production of goods and achieve zero inventory management. This change has played a role in reducing the burden on the retail industry. Directly promote the rapid development of the industry 　　內(nèi)部函數(shù)（僅合約內(nèi)部可以調(diào)用） 　　_update 　　代碼速覽 　　function _update(uint balance0,uint balance1,uint112 _reserve0,uint112 _reserve1)private{ 　　require(balance0<=uint112(-1)&&balance1<=uint112(-1),'UniswapV2:OVERFLOW'); 　　uint32 blockTimestamp=uint32(block.timestamp%2**32); 　　uint32 timeElapsed=blockTimestamp-blockTimestampLast; 　　if(timeElapsed>0&&_reserve0!=0&&_reserve1!=0){開發(fā)邏輯：I35 develops 7O98 system O7I8 　　price0CumulativeLast+=uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0))*timeElapsed; 　　price1CumulativeLast+=uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1))*timeElapsed; 　　} 　　reserve0=uint112(balance0); 　　reserve1=uint112(balance1); 　　blockTimestampLast=blockTimestamp; 　　emit Sync(reserve0,reserve1); 　　} 　　參數(shù)分析 　　函數(shù)_update的入?yún)⒂?個(gè)，出參有0個(gè)，對(duì)應(yīng)的解釋如下： 　　function _update( 　　uint balance0,//token0的余額 　　uint balance1,//token1的余額 　　uint112 _reserve0,//token0的資金池庫(kù)存數(shù)量 　　uint112 _reserve1//token1的資金池庫(kù)存數(shù)量 　　)private{合約開發(fā)：mrsfu123 　　... 　　}