add FnTimed type alias

src/lib.rs

@@ -9,6 +9,8 @@ use std::{
 
 use indicatif::{MultiProgress, ProgressBar, ProgressStyle};
 
+type FnTimed<T> = Box<dyn Fn() -> TimeWithValue<T>>;
+
 #[derive(Debug, Clone)]
 /// hold information about the benchmark to run
 pub struct Bencher {
@@ -113,10 +115,7 @@ impl Bencher {
     /// - the measurements will be printed to STDOUT or to file as JSON
     /// - the result of the last run will be returned
     #[allow(clippy::type_complexity)]
-    pub fn bench_multiple_and_return<O>(
-        &self,
-        benches: Vec<(String, Box<dyn Fn() -> TimeWithValue<O>>)>,
-    ) -> Option<O> {
+    pub fn bench_multiple_and_return<O>(&self, benches: Vec<(String, FnTimed<O>)>) -> Option<O> {
         let style = ProgressStyle::with_template(
             "[{elapsed_precise}] {bar:40.cyan/blue} {pos:>10}/{len:10} {msg}",
         )
@@ -157,21 +156,17 @@ impl Bencher {
 
     /// see [`Self::bench_multiple_and_return`]
     #[allow(clippy::type_complexity)]
-    pub fn bench_multiple<O>(&self, benches: Vec<(String, Box<dyn Fn() -> TimeWithValue<O>>)>) {
+    pub fn bench_multiple<O>(&self, benches: Vec<(String, FnTimed<O>)>) {
         self.bench_multiple_and_return(benches);
     }
 
     /// see [`Self::bench_multiple_and_return`]
-    pub fn bench_and_return<O>(
-        &self,
-        label: impl ToString,
-        f: Box<dyn Fn() -> TimeWithValue<O>>,
-    ) -> Option<O> {
+    pub fn bench_and_return<O>(&self, label: impl ToString, f: FnTimed<O>) -> Option<O> {
         self.bench_multiple_and_return(vec![(label.to_string(), f)])
     }
 
     /// see [`Self::bench_multiple_and_return`]
-    pub fn bench<O>(&self, label: impl ToString, f: Box<dyn Fn() -> TimeWithValue<O>>) {
+    pub fn bench<O>(&self, label: impl ToString, f: FnTimed<O>) {
         self.bench_multiple_and_return(vec![(label.to_string(), f)]);
     }
 }