title: R gsub a single double quotation mark
body: <p>I have a field of strings in a data frame all similar to:        </p>
  
  <pre><code>"Young Adult – 8-9"" 
  </code></pre>
  
  <p>where the inner single " is what I want to replace with nothing to get:</p>
  
  <pre><code>"Young Adult - 8-9"
  </code></pre>
  
  <p>How can I do this? I tried to escape with a double backslash:</p>
  
  <pre><code>gsub("\\"", "", string)
  </code></pre>
  
  <p>but got this error: Error: unexpected string constant in "gsub("\"", ""</p>