From 48436d11e4ef8f31b8503037d96c87c507c44600 Mon Sep 17 00:00:00 2001
From: Simmo Saan <simmo.saan@gmail.com>
Date: Thu, 19 Dec 2024 23:57:20 +0200
Subject: [PATCH] Use string interpolation in 2024 day 19 part 1

$ needed to be escaped.
---
 src/main/scala/eu/sim642/adventofcode2024/Day19.scala | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/eu/sim642/adventofcode2024/Day19.scala b/src/main/scala/eu/sim642/adventofcode2024/Day19.scala
index a7819446..92d8ba4f 100644
--- a/src/main/scala/eu/sim642/adventofcode2024/Day19.scala
+++ b/src/main/scala/eu/sim642/adventofcode2024/Day19.scala
@@ -11,7 +11,7 @@ object Day19 {
 
   def patternsRegex(patterns: Seq[Towel]): Regex = {
     val one = patterns.mkString("|")
-    ("^(" + one + ")*$").r // TODO: why s"..." doesn't work?
+    s"^($one)*$$".r
   }
 
   def countPossibleDesigns(input: Input): Int = {