Let's compare in insensitive ways

Author: shana

src/GitHub.Exports/Helpers/AssemblyResolver.cs

@@ -9,6 +9,7 @@
 using System.Threading.Tasks;
 using Microsoft.VisualStudio.Shell;
 using System.Diagnostics;
+using GitHub.Collections;
 
 namespace GitHub.Helpers
 {
@@ -51,7 +52,7 @@ static Assembly LoadAssemblyFromRunDir(object sender, ResolveEventArgs e)
             {
                 var requestedName = e.Name.TrimSuffix(".dll", StringComparison.OrdinalIgnoreCase);
                 var name = new AssemblyName(requestedName).Name;
-                if (!ourAssemblies.Contains(name))
+                if (!ourAssemblies.Contains(name, new LambdaComparer<string>((lhs, rhs) => String.Compare(lhs, rhs, StringComparison.OrdinalIgnoreCase))))
                     return null;
                 var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
                 var filename = Path.Combine(path, name + ".dll");

src/GitHub.Extensions/LambdaComparer.cs

@@ -10,11 +10,11 @@ public class LambdaComparer<T> : IEqualityComparer<T>, IComparer<T>
         readonly Func<T, int> lambdaHash;
 
         public LambdaComparer(Func<T, T, int> lambdaComparer) :
-            this(lambdaComparer, o => 0)
+            this(lambdaComparer, null)
         {
         }
 
-        LambdaComparer(Func<T, T, int> lambdaComparer, Func<T, int> lambdaHash)
+        public LambdaComparer(Func<T, T, int> lambdaComparer, Func<T, int> lambdaHash)
         {
             this.lambdaComparer = lambdaComparer;
             this.lambdaHash = lambdaHash;
@@ -32,7 +32,9 @@ public bool Equals([AllowNull] T x, [AllowNull] T y)
 
         public int GetHashCode([AllowNull] T obj)
         {
-            return lambdaHash(obj);
+            return lambdaHash != null
+                ? lambdaHash(obj)
+                : obj?.GetHashCode() ?? 0;
         }
     }
 }