Tweaked some parsing code

[advent-of-code-21.git] / advent24 / Main.hs

diff --git a/advent24/Main.hs b/advent24/Main.hs
index ae03fac557b1f58e00cf98ae73af067cd871aa34..e1836b22ca9cdf012344a6c3e60bd730d22c17d1 100644 (file)
--- a/advent24/Main.hs
+++ b/advent24/Main.hs
@@ -217,10 +217,10 @@ eqlP = Eql <$> ("eql " *> registerP) <*> (" " *> argumentP)
 
 registerP, wP, xP, yP, zP :: Parser Register
 registerP = choice [wP, xP, yP, zP]
-wP = "w" *> pure W
-xP = "x" *> pure X
-yP = "y" *> pure Y
-zP = "z" *> pure Z
+wP = W <$ "w"
+xP = X <$ "x"
+yP = Y <$ "y"
+zP = Z <$ "z"
 
 argumentP :: Parser Argument
 argumentP = (Reg <$> registerP) <|> (Lit <$> signed decimal)