Small performance boost.

benches/bench.rs

@@ -17,16 +17,27 @@ fn default_set<C: FromIterator<u64>>(n: usize) -> C {
     (0..n).map(|_| rng.next_u64()).collect()
 }
 
+fn contains(data: &[u64]) {
+    let set = BitSet::new();
+
+    for v in data {
+        set.contains(v);
+    }
+}
+
+fn insert(data: &[u64]) {
+    let mut set = BitSet::new();
+
+    for v in data {
+        set.insert(*v);
+    }
+}
+
 fn criterion_benchmark(c: &mut Criterion) {
     let data: Vec<_> = default_set(1000);
 
-    c.bench_function("insert", |b| b.iter(|| {
-        let mut set = BitSet::new();
-
-        for v in &data {
-            set.insert(*v);
-        }
-    }));
+    c.bench_function("contains", |b| b.iter(|| contains(&data)));
+    c.bench_function("insert", |b| b.iter(|| insert(&data)));
 }
 
 criterion_group!(benches, criterion_benchmark);