Meta佛薩奇2.0合約模式軟體開發原始碼框架

caiayu1234發表於2023-04-14

 我知道很多人在有人提到web2.0的時候就說,還會有web3.0。但他們並不知道web3.0是什麼,會在什麼時候實現,如何實現,web3.0有哪些特點。我在這裡簡單闡述一下我對3.0的理解,假如說web1.0的本質是聯合,那麼web2.0的本質就是互動,它讓網民更多地參與資訊產品的創造、傳播和分享,而這個過程是有價值的。web2.0的缺點是沒有體現出網民勞動的價值,所以2.0很脆弱,缺乏商業價值。I88智慧合約I928系統開發8024

  

  uint indexToBeDeleted;

  

  mapping(address=>uint)public mappedUsers;

  

  address[]public addressIndices;

  

  uint arrayLength=addressIndices.length;

  

  for(uint i=0;i<arrayLength;i++){

  

  if(addressIndices<i>==addressToBeDeleted){

  

  indexToBeDeleted=i;

  

  break;

  

  }

  

  }

  

  //if index to be deleted is not the last index,swap position.

  

  if(indexToBeDeleted<arrayLength-1){

  

  mappedUsers[indexToBeDeleted]=mappedUsers[arrayLength-1];

  

  }

  

  //we can now reduce the array length by 1

  

  addressIndices--;

  

  pragma solidity^0.4.0;

  

  contract Coin{

  

  //The keyword"public"makes those variables

  

  //readable from outside.

  

  address public minter;

  

  mapping(address=>uint)public balances;

  

  //Events allow light clients to react on

  

  //changes efficiently.

  

  event Sent(address from,address to,uint amount);

  

  //This is the constructor whose code is

  

  //run only when the contract is created.

  

  function Coin(){

  

  minter=msg.sender;

  

  }

  

  function mint(address receiver,uint amount){

  

  if(msg.sender!=minter)return;

  

  balances[receiver]+=amount;

  

  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/69973864/viewspace-2945814/,如需轉載,請註明出處,否則將追究法律責任。

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