From bdc9004df681666615b979926f3c2cd0ef1c3528 Mon Sep 17 00:00:00 2001
From: MsK` <msk@lywenn.eu.org>
Date: Sat, 11 Dec 2021 20:19:34 +0100
Subject: [PATCH] use char->number from common in day 5

---
 05-hydrothermal-venture/code.scm | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/05-hydrothermal-venture/code.scm b/05-hydrothermal-venture/code.scm
index 52e486d..04ae979 100644
--- a/05-hydrothermal-venture/code.scm
+++ b/05-hydrothermal-venture/code.scm
@@ -1,8 +1,5 @@
 (import (srfi :43)) ; vector extensions
-
-; returns numbers 0 to 9 from ascii character
-(define (char->number c)
-  (- (char->integer c) 48)) ; 48 is ASCII's number zero
+(load "../common.scm")
 
 ; reads a numnber from input
 ; also consumes the next non-number character in the file!