title: What is the best naming convention of iOS image?
body: <p>The naming convention I refer is not the naming rules for different devices, like suffix of <code>@2x</code> and <code>@3x</code>. Here I want to seek a better naming conversion for better legibility.</p>
  
  <p>For example: </p>
  
  <blockquote>
    <p>There is an icon for setting button , and I will name it <code>icon_setting@2x.png</code> which may run into collisions if there is another setting icon with different style in other view controller A. To solve this, I may name it <code>A_icon_setting</code> and it will lead to a long name if A is long.</p>
  </blockquote>
  
  <p>So I am always struggling naming a image in my iOS development and I wonder what is a good name conversion for iOS image resource. </p>