From 0c266616134a3cb44e9d4632fb767c9c8d9ef7b6 Mon Sep 17 00:00:00 2001
From: Spandan Garg <spgarg@microsoft.com>
Date: Fri, 18 Feb 2022 16:16:55 -0700
Subject: [PATCH] PERF: Optimize Reader.TypeDeserializerCache.cs

---
 src/XmlGridReader.Benchmarks/Benchmarks.cs        | 1 +
 src/XmlGridReader/Reader.TypeDeserializerCache.cs | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/XmlGridReader.Benchmarks/Benchmarks.cs b/src/XmlGridReader.Benchmarks/Benchmarks.cs
index 883f53d..eff4f8b 100644
--- a/src/XmlGridReader.Benchmarks/Benchmarks.cs
+++ b/src/XmlGridReader.Benchmarks/Benchmarks.cs
@@ -11,6 +11,7 @@
 namespace XmlGridReader.Benchmarks
 {
     [RankColumn(NumeralSystem.Arabic)]
+    [MemoryDiagnoser]
     public class Benchmarks
     {
         private string xml;
diff --git a/src/XmlGridReader/Reader.TypeDeserializerCache.cs b/src/XmlGridReader/Reader.TypeDeserializerCache.cs
index 7853ddc..da00731 100644
--- a/src/XmlGridReader/Reader.TypeDeserializerCache.cs
+++ b/src/XmlGridReader/Reader.TypeDeserializerCache.cs
@@ -44,7 +44,7 @@ private Func<XmlGridRowReader, object> GetDeserializer(
             {
                 reader.ReadRow();
 
-                if (!reader.Columns.Any())
+                if (reader.Columns.Count == 0)
                 {
                     throw new InvalidOperationException("No columns");
                 }
@@ -97,12 +97,12 @@ private int ComputeHashCode(List<string> fields)
 
             public bool Equals(DeserializerKey other)
             {
-                if (hashCode != other.hashCode || fields.Count() != other.fields.Count())
+                if (hashCode != other.hashCode || fields.Count != other.fields.Count)
                 {
                     return false;
                 }
 
-                for (int i = 0; i < fields.Count(); i++)
+                for (int i = 0; i < fields.Count; i++)
                 {
                     if (fields[i] != other.fields[i])
                     {