From 3ae414166691845408171ad924c657c0494306e7 Mon Sep 17 00:00:00 2001
From: Project Nayuki <me@nayuki.io>
Date: Thu, 4 Nov 2021 15:18:34 +0000
Subject: [PATCH] Slightly deoptimized Rust code for clarity, partly undoing
 commit 6c1f96789429.

---
 rust/src/lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index 2afae46..cb87c37 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -1124,7 +1124,7 @@ impl QrSegment {
 	/// 
 	/// A string is encodable iff each character is in the range 0 to 9.
 	pub fn is_numeric(text: &str) -> bool {
-		text.bytes().all(|b| (b'0' ..= b'9').contains(&b))
+		text.chars().all(|c| ('0' ..= '9').contains(&c))
 	}