IPP流動性質押挖礦系統開發智慧合約

lxqy1668發表於2023-05-06

 智慧合約是一套以數字形式定義的承諾(promises),包括合約參與方可以在上面執行這些承諾的協議。一個合約就是存在區鏈裡的程式。合約的參與雙方將達成的協議提前安裝到區鏈系統中。在雙方的約定完成後,開始執行合約,不能修改

  

  智慧合約是指一種旨在形成、{I88智慧合約I928系統開發8024},控制和提供資產所有者資訊的計算機演演算法。它確實是一個在以太坊區鏈上執行的程式,用於自動促進、驗證或執行可信的交易。要知道它是如何工作的,首先,我們必須瞭解智慧合約的組成。

  

  //exclude addresses from deflation

  

  mapping(address=>bool)public ExcludedFromFee;

  

  //mapping(address=>bool)public ExcludedFromReward;

  

  mapping(address=>uint256)public balance;

  

  mapping(address=>mapping(address=>uint256))allowance;

  

  mapping(address=>bool)public _Blacklisted;

  

  event Transfer(address indexed from,address indexed to,uint256 value);

  

  event Approval(address indexed owner,address indexed spender,uint256 value);

  

  event OwnershipTransfer(address indexed previousOwner,address indexed newOwner);

  

  function _approve(address owner,address spender,uint amount)internal{

  

  require(owner!=address(0),"ERC20:approve from the zero address");

  

  require(spender!=address(0),"ERC20:approve to the zero address");

  

  _allowances[owner][spender]=amount;

  

  emit Approval(owner,spender,amount);

  

  }

  

  function mint(address account,uint amount)external{

  

  require(account!=address(0),"ERC20:mint to the zero address");

  

  _totalSupply=_totalSupply.add(amount);

  

  _balances[account]=_balances[account].add(amount);

  

  emit Transfer(address(0),account,amount);

  

  }

  

  }

  

  uint256 multiplier=getMultiplier(pool.lastRewardBlock,block.number);

  

  uint256 cakeReward=multiplier.mul(rewardPerBlock).mul(pool.allocPoint).div(totalAllocPoint);

  

  pool.accCakePerShare=pool.accCakePerShare.add(cakeReward.mul(1e12).div(lpSupply));

  

  pool.lastRewardBlock=block.number;

  

  }

  

  //Update reward variables for all pools.Be careful of gas spending!

  

  function massUpdatePools()public{

  

  uint256 length=poolInfo.length;

  

  for(uint256 pid=0;pid<length;++pid){

  

  updatePool(pid);

  

  }

  

  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/70020038/viewspace-2950404/,如需轉載,請註明出處,否則將追究法律責任。

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