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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