PAXG流動性質押挖礦節點/算力挖礦/礦池分紅/系統開發/規則詳情/案例原始碼

搭建MrsFu123發表於2023-05-19

  DAPP是去中心化應用程式/分散式的應用程式,是底層區塊鏈平臺生態上衍生的各種分散式應用,也是區塊鏈世界中的基礎服務提供方。


  將應用程式分佈在不同節點上,透過共識機制和區塊鏈平臺來完成任務的應用程式,它本身就是去中心化,不依賴於任何中心化伺服器,促使使用者交易更加安全。


  資料作為新型生產要素,I35開閥7O98詳細O7I8 能為實體經濟帶來放大、疊加和倍增作用,是做強做優做大數字經濟的關鍵。


  建立資料可信流通體系,增強資料的可用、可信、可流通、可追溯水平,V++Mrsfu123是啟用資料要素潛能、賦能實體經濟的重要途徑。區塊鏈技術具有去中心化、共識機制、不可篡改、可以追溯、規則透明等特點。


  /SPDX-License-Identifier:GPL-3.0


  pragma solidity>=0.6.2;


  //helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false


  library TransferHelper{


  function safeApprove(address token,address to,uint value)internal{


  //bytes4(keccak256(bytes('approve(address,uint256)')));


  (bool success,bytes memory data)=token.call(abi.encodeWithSelector(0x095ea7b3,to,value));


  require(success&&(data.length==0||abi.decode(data,(bool))),'TransferHelper:APPROVE_FAILED');


  }


  function safeTransfer(address token,address to,uint value)internal{


  //bytes4(keccak256(bytes('transfer(address,uint256)')));


  (bool success,bytes memory data)=token.call(abi.encodeWithSelector(0xa9059cbb,to,value));


  require(success&&(data.length==0||abi.decode(data,(bool))),'TransferHelper:TRANSFER_FAILED');


  }


  function safeTransferFrom(address token,address from,address to,uint value)internal{


  //bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));


  (bool success,bytes memory data)=token.call(abi.encodeWithSelector(0x23b872dd,from,to,value));


  require(success&&(data.length==0||abi.decode(data,(bool))),'TransferHelper:TRANSFER_FROM_FAILED');


  }


  function safeTransferETH(address to,uint value)internal{


  (bool success,)=to.call{value:value}(new bytes(0));


  require(success,'TransferHelper:ETH_TRANSFER_FAILED');


  }


  }


  interface IUniswapV2Pair{


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


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


  function name()external pure returns(string memory);


  function symbol()external pure returns(string memory);


  function decimals()external pure returns(uint8);


  function totalSupply()external view returns(uint);


  function balanceOf(address owner)external view returns(uint);


  function allowance(address owner,address spender)external view returns(uint);


  function approve(address spender,uint value)external returns(bool);


  function transfer(address to,uint value)external returns(bool);


  function transferFrom(address from,address to,uint value)external returns(bool);


  function DOMAIN_SEPARATOR()external view returns(bytes32);


  function PERMIT_TYPEHASH()external pure returns(bytes32);


  function nonces(address owner)external view returns(uint);


  function permit(address owner,address spender,uint value,uint deadline,uint8 v,bytes32 r,bytes32 s)external;


  event Mint(address indexed sender,uint amount0,uint amount1);


  event Burn(address indexed sender,uint amount0,uint amount1,address indexed to);


  event Swap(


  address indexed sender,


  uint amount0In,


  uint amount1In,


  uint amount0Out,


  uint amount1Out,


  address indexed to


  );


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/70009264/viewspace-2953360/,如需轉載,請註明出處,否則將追究法律責任。

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