Import Obj

Foo.sol

pragma solidity ^0.4.0;
// import the contract
import "github.com/sagivo/solidity-utils/contracts/lib/Dictionary.sol";
// have fun
contract Foo {
    // declare and use new Dictionary structure
    using Dictionary for Dictionary.Data;
    Dictionary.Data private dic;

    function Foo() public view returns (uint) {
        dic.set(1, "value");
        dic.set(2, "foo");
        dic.set(123, "bar");
        dic.set(1, "new value");
        // get an item
        dic.get(2); // => '0x666f6f' (byte hex of 'foo')
        // get all keys
        dic.keys(); // => [1, 2, 123]
    }
}