title: Bind strings with quotation
body: <p>I am sending some code to R.net wrapper as strings. If there are no any quation marks inside , it's simple with @</p>
  
  <pre><code> engine.Evaluate(@"remove_outliersabove &lt;- function(x, na.rm = TRUE, ...) { 
                          qnt &lt;- quantile(x, probs=c(.25, .75), na.rm = na.rm, ...);
                          H &lt;- 1.5 * IQR(x, na.rm = na.rm);
                          y &lt;- x;
                          y[x &gt; (qnt[2] + H)] &lt;- NA;
                          y;
                          }");
  </code></pre>
  
  <p>but if I have "" inside then things get complicated and I need to cut and join strings like this</p>
  
  <pre><code>    engine.Evaluate("for (k in 1:length(dates))" +
                      "{ " +
                          "tmp &lt;- grep(dates[[k]],as.Date(data$timestamp, format=\"%d/%m/%Y\"))" +
                          "if (length(tmp)!=96)" +
                              "{ " +
                              "to_remove[[it]]=k it=it+1" +
                              "}" +
                      "}");
  </code></pre>
  
  <p>is there better option ? for example to use @ and then mark quation mark somehow ? </p>