tById("cpp-code"), {
        lineNumbers: true,
        matchBrackets: true,
        mode: "text/x-c++src"
      });
      var javaEditor = CodeMirror.fromTextArea(document.getElementById("java-code"), {
        lineNumbers: true,
        matchBrackets: true,
        mode: "text/x-java"
      });
      var objectivecEditor = CodeMirror.fromTextArea(document.getElementById("objectivec-code"), {
        lineNumbers: true,
        matchBrackets: true,
        mode: "text/x-objectivec"
      });
      var scala