From cb70dfcde53c5299d06b05fd33ab5f5862956442 Mon Sep 17 00:00:00 2001
From: Timothy Makkison <timmakkison@gmail.com>
Date: Tue, 21 Oct 2025 20:48:04 +0100
Subject: [PATCH] perf: use string interpolation for `GroupFor`

---
 Src/CSharpier.Core/CSharp/SyntaxPrinter/PrintingContext.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Src/CSharpier.Core/CSharp/SyntaxPrinter/PrintingContext.cs b/Src/CSharpier.Core/CSharp/SyntaxPrinter/PrintingContext.cs
index e0f5176d4..d6368fa49 100644
--- a/Src/CSharpier.Core/CSharp/SyntaxPrinter/PrintingContext.cs
+++ b/Src/CSharpier.Core/CSharp/SyntaxPrinter/PrintingContext.cs
@@ -16,7 +16,7 @@ public string GroupFor(string value)
         var number = this.groupNumberByValue.GetValueOrDefault(value, 0) + 1;
         this.groupNumberByValue[value] = number;
 
-        return value + " #" + number;
+        return $"{value} #{number}";
     }
 
     public PrintingContext WithSkipNextLeadingTrivia()