(refractor) timer and warm up query

src-core/examples/search_yomitan.rs

@@ -1,7 +1,5 @@
-use std::time::Instant;
-
 use anyhow::Ok;
-use cjdic2_core::AppService;
+use cjdic2_core::{AppService, Timer};
 
 mod common;
 use common::get_db_dir;
@@ -9,11 +7,12 @@ use common::get_db_dir;
 fn main() -> Result<(), anyhow::Error> {
     let service = AppService::new(get_db_dir())?;
 
-    let start = Instant::now();
-    let rs = service.search_yomitan("擦る", "する", 10, 0)?;
-    println!("{:#?}", rs);
-    println!("n={}", rs.len());
-    println!("[{:.2?}]", start.elapsed());
+    {
+        let _timer = Timer::new("Search".to_string());
+        let rs = service.search_yomitan("擦る", "する", 10, 0)?;
+        println!("{:#?}", rs);
+        println!("n={}", rs.len());
+    }
 
     Ok(())
 }