defi/dapp/lp/ulab質押挖礦開發正式版丨ulab質押挖礦系統開發技術詳細及程式碼說明

xiaofufu發表於2023-04-17

  智慧合約是一種只有透過區塊鏈才能實現的新技術。智慧合約是數字化的,儲存在區塊鏈中,並使用加密程式碼強制執行協議。智慧合約與區塊鏈的結合,普遍被認為是區塊鏈世界中一次里程碑式的升級。第一個結合了區塊鏈與智慧合約技術的平臺--以太坊的誕生,被認為是開啟了"區塊鏈2.0"時代。


  區塊鏈本質上是一種去中心化的分散式資料庫,是分散式資料儲存、多中心的點對點傳輸、共識機制和加密演算法等多種技術在網際網路時代的創新應用模式。


  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。


  智慧合約就是可程式設計的合同,也可以理解為一段自動執行的條文合同,在計算機中,就是一段自動執行的程式片段。它更易於合約儲存,並且由確定的演算法執行,給定輸入,就得到對應的輸出,極大保障了合約的執行力。


  A state machine system constructed by the blockchain consensus algorithm enables efficient operation of smart contracts.Once a smart contract is triggered,it will be executed immediately and automatically operated according to the contract specifications.The entire process is intelligent and efficient,and the quick completion in a short time reflects its accuracy and economy.


  function burn(address to)external override lock returns(uint amount0,uint amount1){


  (uint112 _reserve0,uint112 _reserve1,)=getReserves();


  //gas savings


  address _token0=token0;


  //gas savings


  address _token1=token1;


  //gas savings


  uint balance0=IERC20(_token0).balanceOf(address(this));


  uint balance1=IERC20(_token1).balanceOf(address(this));


  uint liquidity=_balanceOf[address(this)];


  bool feeOn=_mintFee(_reserve0,_reserve1);


  uint totalSupply=_totalSupply;


  //gas savings,must be defined here since totalSupply can update in _mintFee


  amount0=liquidity.mul(balance0)/_totalSupply;


  //using balances ensures pro-rata distribution


  amount1=liquidity.mul(balance1)/_totalSupply;


  //using balances ensures pro-rata distribution


  require(amount0>0&&amount1>0,'MdexSwap:INSUFFICIENT_LIQUIDITY_BURNED');


  _burn(address(this),liquidity);


  _safeTransfer(_token0,to,amount0);


  _safeTransfer(_token1,to,amount1);


  balance0=IERC20(_token0).balanceOf(address(this));


  balance1=IERC20(_token1).balanceOf(address(this));


  _update(balance0,balance1,_reserve0,_reserve1);


  if(feeOn)kLast=uint(reserve0).mul(reserve1);


  //reserve0 and reserve1 are up-to-date


  emit Burn(msg.sender,amount0,amount1,to);


  }


  //update reserves and,on the first call per block,price accumulators


  function _update(uint balance0,uint balance1,uint112 _reserve0,uint112 _reserve1)private{


  require(balance0<=uint112(-1)&&balance1<=uint112(-1),'MdexSwap:OVERFLOW');


  uint32 blockTimestamp=uint32(block.timestamp%2**32);


  uint32 timeElapsed=blockTimestamp-blockTimestampLast;


  //overflow is desired


  if(timeElapsed>0&&_reserve0!=0&&_reserve1!=0){


  //*never overflows,and+overflow is desired


  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);


  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/69956839/viewspace-2946266/,如需轉載,請註明出處,否則將追究法律責任。

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