Push a quick utility to detect unused selectors and classes

Resources/Utilities/CompareStylesheets.cs

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+using System.Text.RegularExpressions;
+
+HashSet<string> ReadSelectors(string file){
+    return new HashSet<string>(
+        File.ReadAllLines(file)
+            .Where(line => line.Contains('{'))
+            .Select(line => line.Substring(0, line.IndexOf('{')).Trim())
+            .SelectMany(lines => lines.Split(new char[]{ ',', ' ' }, StringSplitOptions.RemoveEmptyEntries))
+    );
+}
+
+HashSet<string> ExtractClasses(HashSet<string> selectors){
+    return new HashSet<string>(
+        selectors.SelectMany(selector => Regex.Matches(selector, @"\.[a-zA-Z0-9_-]+").Cast<Match>().Select(match => match.Value))
+    );
+}
+
+void PrintAll(IEnumerable<string> data){
+    foreach(string line in data){
+        Print(line);
+    }
+}
+
+void PrintMissing(HashSet<string> all, HashSet<string> subset){
+    PrintAll(subset.Where(ele => !all.Contains(ele)));
+}