diff --git a/BeefLibs/corlib/src/SizedArray.bf b/BeefLibs/corlib/src/SizedArray.bf
index 909417da..97e00637 100644
--- a/BeefLibs/corlib/src/SizedArray.bf
+++ b/BeefLibs/corlib/src/SizedArray.bf
@@ -1,7 +1,8 @@
+using System.Collections;
 namespace System
 {
 	[AlwaysInclude]
-	struct SizedArray<T, CSize> where CSize : const int
+	struct SizedArray<T, CSize> : IEnumerable<T> where CSize : const int
 	{
 		protected T[CSize] mVal;
 
@@ -36,6 +37,66 @@ namespace System
 			}
 			strBuffer.Append(')');
 		}
+
+		public Enumerator GetEnumerator()
+		{
+			return .((T[CSize])this);
+		}
+
+		public struct Enumerator : IEnumerator<T>
+		{
+		    private T[CSize] mList;
+		    private int mIndex;
+		    private T* mCurrent;
+
+		    public this(T[CSize] list)
+		    {
+		        mList = list;
+		        mIndex = 0;
+		        mCurrent = null;
+		    }
+
+		    public bool MoveNext() mut
+		    {
+		        if ((uint(mIndex) < uint(CSize)))
+		        {
+		            mCurrent = &mList[mIndex];
+		            mIndex++;
+		            return true;
+		        }			   
+		        return MoveNextRare();
+		    }
+
+		    private bool MoveNextRare() mut
+		    {
+		    	mIndex = CSize + 1;
+		        mCurrent = null;
+		        return false;
+		    }
+
+		    public T Current
+		    {
+		        get
+		        {
+		            return *mCurrent;
+		        }
+		    }
+
+			public int Index
+			{
+				get
+				{
+					return mIndex - 1;
+				}				
+			}
+
+			public Result<T> GetNext() mut
+			{
+				if (!MoveNext())
+					return .Err;
+				return Current;
+			}
+		}
 	}
 
 }
diff --git a/IDEHelper/Compiler/BfExprEvaluator.cpp b/IDEHelper/Compiler/BfExprEvaluator.cpp
index dcff9f82..a6d084ea 100644
--- a/IDEHelper/Compiler/BfExprEvaluator.cpp
+++ b/IDEHelper/Compiler/BfExprEvaluator.cpp
@@ -603,6 +603,9 @@ bool BfGenericInferContext::InferGenericArguments(BfMethodInstance* methodInstan
 		{
 			InferGenericArgument(methodInstance, srcGenericArg, ifaceConstraint, BfIRValue());
 			auto typeInstance = srcGenericArg->ToTypeInstance();
+			if (typeInstance == NULL)
+				typeInstance = mModule->GetWrappedStructType(srcGenericArg);
+
 			if (typeInstance != NULL)
 			{
 				for (auto ifaceEntry : typeInstance->mInterfaces)