Appease clippy

[voter] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index 865fcb864ec5bf6497a6ac96c42d9174030345d5..8c94be10909277a1c271c0ecd856e7f04b118730 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -82,7 +82,7 @@ fn tally_votes(dir: &Path) -> std::io::Result<HashMap<String, HashSet<String>>>
 }
 
 fn valid_id_char(c: u8) -> bool {
-    (b'A'..=b'Z').contains(&c) || (b'a'..=b'z').contains(&c) || (b'0'..=b'9').contains(&c)
+    c.is_ascii_alphanumeric()
 }
 
 fn make_random_id() -> [u8; COOKIE_LENGTH] {