Explicitly refer to state variables instead of local variables with the same name

Question

Is it possible to refer to state variables when a local variable has the same name?

The this keyword in Solidity does something else, and I haven't heard of any equivalent keyword.

For example:

pragma solidity ^0.4.18;

contract escrow {

  address seller;
  address buyer;
  address owner = msg.sender;

  function setup(address seller, address buyer){
    if(msg.sender == owner){
        this.seller = seller;
        this.buyer = buyer;
    }
  }

}

I found this GitHub issue but no answers to my specific question.

Answer 1

This doesn't exist in Solidity. What you typically see instead is a leading underscore:

address seller;
address buyer;

function setup(address _buyer, address _seller) {
    buyer = _buyer;
    seller = _seller;
}

(I assume you didn't mean to write seller twice in your code.)