title: Access member variables directly or pass as parameter?
body: <p>I noticed that even when paying respect to the single responsibility principle of OOD, sometimes classes still grow large. Sometimes accessing member variables directly in methods feels like having global state, and a lot of stuff exists in the current scope. Just by looking at the method currently working in, it is not possible anymore to determine where invidiual variables accessible in the current scope come from. </p>
  
  <p>When working together with a friend lately, I realized I write much more verbose code than him, because I pass member variables still as parameters into every single method. </p>
  
  <p>Is this bad practice?</p>
  
  <p>edit: example:</p>
  
  <pre><code>class AddNumbers {
  public:
      int a, b;
      // ...
      int addNumbers {
          // I could have called this without arguments like this:
          // return internalAlgorithmAddNumbers();
          // because the data needed to compute the result is in members.
          return internalAlgorithmAddNumbers(a,b);
      }
  
  private:
      int internalAlgorithmAddNumbers(int sum1, int sum2) { return sum1+sum2; }
  };
  </code></pre>