hi clubby

helper/src/hash.rs

@@ -0,0 +1,24 @@
+use std::hash::Hasher;
+
+#[derive(Default)]
+pub struct NoHasher {
+    value: u64,
+}
+
+impl Hasher for NoHasher {
+    fn finish(&self) -> u64 {
+        self.value
+    }
+
+    fn write_u32(&mut self, i: u32) {
+        self.value = i as u64;
+    }
+
+    fn write_u64(&mut self, i: u64) {
+        self.value = i;
+    }
+
+    fn write(&mut self, _: &[u8]) {
+        unimplemented!()
+    }
+}

helper/src/lib.rs

@@ -1,10 +1,12 @@
 mod cmd;
 mod ext;
+mod hash;
 
 use std::{borrow::Cow, fmt::Debug};
 
 pub use self::cmd::main;
 pub use self::ext::*;
+pub use self::hash::*;
 
 pub type Solution = fn(&str) -> u64;