title: Function name in single quotation marks in R
body: <p>It may be a silly question but I have been bothered for quite a while. I've seen people use single quotation marks to surround the function name when they are defining a function. I keep wondering the benefit of doing so. Below is a naive example</p>
  
  <pre><code>'row.mean' &lt;- function(mat){
      return(apply(mat, 1, mean))
  }
  </code></pre>
  
  <p>Thanks in advance!</p>