佛薩奇原始碼系統開發搭建馬蹄鏈案例

caiayu1234發表於2023-04-10

 事實上,不僅僅是Web2.0如此,Web 1.0也存在類似的問題,根本的原因在於平臺的中心化。平臺掌握在誰手上,資料也就掌握在誰手上,資料的控制權就掌握在誰手上。這裡要強調的是,我們說的是控制權,而不是所有權,控制權是技術層面的,所有權是層面的,當所有者和控制者不一致的時候,出現問題是必然的。I88智慧合約I928系統開發8024

  

  address[]funders;

  

  for(uint256 funderIndex=0;funderIndex<funders.length;funderIndex++){

  

  address funder=funders[funderIndex];

  

  addressToFundAmount[funder]=0;

  

  }

  

  迴圈for

  

  陣列長度Array Length

  

  Forcing a Transaction

  

  Recap

  

  contract TrickleWallet{

  

  address public partner;//withdrawal partner-pay the gas,split the withdraw

  

  address public constant owner=0xA9E;

  

  uint timeLastWithdrawn;

  

  mapping(address=>uint)withdrawPartnerBalances;//keep track of partners balances

  

  function setWithdrawPartner(address _partner)public{

  

  require(partner=='0x0'||msg.sender==partner);

  

  partner=_partner;

  

  }

  

  //withdraw 1%to recipient and 1%to owner

  

  function withdraw()public{

  

  uint amountToSend=address(this).balance/100;

  

  //perform a call without checking return

  

  //the recipient can revert,the owner will still get their share

  

  partner.call.value(amountToSend)();

  

  owner.transfer(amountToSend);

  

  //keep track of last withdrawal time

  

  timeLastWithdrawn=now;

  

  withdrawPartnerBalances[partner]+=amountToSend;

  

  }

  

  //allow deposit of funds

  

  function()payable{}

  

  //convenience function

  

  function contractBalance()view returns(uint){

  

  return address(this).balance;

  

  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/69973864/viewspace-2944609/,如需轉載,請註明出處,否則將追究法律責任。

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