git ssb

1
pragma solidity ^0.4.4;
2
3
4
contract Migrations {
5
  address public owner;
6
  uint public last_completed_migration;
7
8
  modifier restricted() {
9
    if (msg.sender == owner)
10
    _;
11
  }
12
13
  function Migrations() {
14
    owner = msg.sender;
15
  }
16
17
  function setCompleted(uint completed) restricted {
18
    last_completed_migration = completed;
19
  }
20
21
  function upgrade(address new_address) restricted {
22
    Migrations upgraded = Migrations(new_address);
23
    upgraded.setCompleted(last_completed_migration);
24
  }
25
}
26