init

.gitignore

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+/target

Cargo.lock

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+# It is not intended for manual editing.
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+dependencies = [
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+]

Cargo.toml

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+[package]
+name = "hash_test"
+version = "0.1.0"
+authors = ["abbycin <abbytsing@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+hashbrown = "0.14"
+fasthash = "0.4.0"
+
+[profile.release]
+opt-level = 3
+lto = true
+debug = false

src/main.rs

@@ -0,0 +1,66 @@
+use fasthash::spooky;
+use hashbrown::HashSet;
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+use std::time::Instant;
+
+fn main() {
+    let arg: Vec<String> = std::env::args().collect();
+    if arg.len() != 2 {
+        eprintln!("{} numbers.txt", std::env::args().nth(0).unwrap());
+        std::process::exit(1);
+    }
+    let name = &arg[1];
+    let f = File::open(name).expect("file can't open");
+    let reader = BufReader::new(f);
+    let v: Vec<i32> = reader.lines().map(|x| x.unwrap().parse::<i32>().unwrap()).collect();
+
+    {
+        let mut h = HashSet::with_hasher(spooky::Hash64);
+
+        bench_swiss(&v, &mut h, true);
+        bench_swiss(&v, &mut h, false);
+    }
+
+    {
+        let mut h = std::collections::HashSet::with_hasher(spooky::Hash64);
+
+        bench_std(&v, &mut h, true);
+        bench_std(&v, &mut h, false);
+    }
+
+}
+
+fn bench_swiss(v: &Vec<i32>, h: &mut HashSet<i32, spooky::Hash64>, ins: bool) {
+    let now = Instant::now();
+
+    if ins {
+        for i in v {
+        h.insert(*i);
+        }
+    } else {
+        for i in v {
+            h.contains(i);
+        }
+    }
+    
+    let elapsed = now.elapsed().as_millis();
+    println!("swiss {} => {}ms", if ins { "insert" } else { "search" }, elapsed);
+}
+
+fn bench_std(v: &Vec<i32>, h: &mut std::collections::HashSet<i32, spooky::Hash64>, ins: bool) {
+    let now = Instant::now();
+
+    if ins {
+        for i in v {
+        h.insert(*i);
+        }
+    } else {
+        for i in v {
+            h.contains(i);
+        }
+    }
+    
+    let elapsed = now.elapsed().as_millis();
+    println!("std  {} => {}ms", if ins { "insert" } else { "search" }, elapsed);
+}