solidity智能合约[26]-mapping-创新互联

pragma solidity ^0.4.23;
contract mappingTest{

   uint id = 0;

  mapping(address =>uint) idmap;//将地址与id绑定在一起
  mapping(uint =>string) namemap;//id又与姓名绑定在一起。

  //注册
  function regist(string name) public{
      address acount = msg.sender;
      id++;
      idmap[acount] =  id;
      namemap[id] =  name;
  }
  //根据地址获取id
  function getIdByAddress(address _address) public view returns(uint){
      return  idmap[_address];
  }
     //根据id获取名字
     function getNameByID(uint _id)  public view returns(string){
      return  namemap[_id];
  }
}