NFT鑄造合成質押挖礦系統開發功能分析

caiayu1234發表於2023-04-12

 智慧合約是指一種計算機協議,一旦制定和部署,就可以實現自我執行和自我驗證(self-verifying),不再需要人為幹預。從技術角度看,智慧合約可以看作是一種計算機程式,可以自主執行全部或部分與合約相關的操作,並生成相應的可驗證證據來說明合約操作的有效性。性別。I88智慧合約I928系統開發8024


在部署智慧合約之前,已經制定了與合約相關的所有條款的邏輯流程。智慧合約通常有一個使用者介面(interface)供使用者與已建立的合約進行互動,這些互動嚴格遵循先前制定的邏輯

  

  //SPDX-License-Identifier:MIT

  

  pragma solidity 0.6.11;

  

  import"./MetaCoin.sol";

  

  contract MetaCoinFactory{

  

  MetaCoin[]public metaCoinAddresses;

  

  event MetaCoinCreated(MetaCoin metaCoin);

  

  address private metaCoinOwner;

  

  constructor(address _metaCoinOwner)public{

  

  metaCoinOwner=_metaCoinOwner;

  

  }

  

  function createMetaCoin(uint256 initialBalance)external{

  

  MetaCoin metaCoin=new MetaCoin(metaCoinOwner,initialBalance);

  

  metaCoinAddresses.push(metaCoin);

  

  emit MetaCoinCreated(metaCoin);

  

  }

  

  function getMetaCoins()external view returns(MetaCoin[]memory){

  

  return metaCoinAddresses;

  

  }

  

  }

  

  function getProxyImplementation(TransparentUpgradeableProxy proxy)public view virtual returns(address){

  

  //We need to manually run the static call since the getter cannot be flagged as view

  

  //bytes4(keccak256("implementation()"))==0x5c60da1b

  

  (bool success,bytes memory returndata)=address(proxy).staticcall(hex"5c60da1b");

  

  require(success);

  

  return abi.decode(returndata,(address));

  

  }

  

  /**

  

  * dev Returns the current admin of`proxy`.

  

  *

  

  *Requirements:

  

  *

  

  *-This contract must be the admin of`proxy`.

  

  */

  

  function getProxyAdmin(TransparentUpgradeableProxy proxy)public view virtual returns(address){

  

  //We need to manually run the static call since the getter cannot be flagged as view

  

  //bytes4(keccak256("admin()"))==0xf851a440

  

  (bool success,bytes memory returndata)=address(proxy).staticcall(hex"f851a440");

  

  require(success);

  

  return abi.decode(returndata,(address));

  

  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/69973864/viewspace-2945176/,如需轉載,請註明出處,否則將追究法律責任。

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