Update.

Fmt.

src/lib.rs

@@ -1,9 +1,7 @@
 extern crate rayon;
 
-
 use rayon::prelude::*;
 
-
 pub trait Individual: Send {
     type Fitness: Send + Ord;
 
@@ -13,7 +11,6 @@ pub trait Individual: Send {
     fn mutate(&mut self);
 }
 
-
 pub trait Select<T>: Send
 where
     T: Individual,
@@ -21,7 +18,6 @@ where
     fn select(&self, population: Vec<Wrapper<T>>) -> Vec<Wrapper<T>>;
 }
 
-
 pub struct MaximizeSelector {
     count: usize,
 }
@@ -43,7 +39,6 @@ where
     }
 }
 
-
 pub struct MinimizeSelector {
     count: usize,
 }
@@ -65,7 +60,6 @@ where
     }
 }
 
-
 #[derive(Clone)]
 pub struct Wrapper<T>
 where
@@ -75,7 +69,6 @@ where
     pub fitness: Option<T::Fitness>,
 }
 
-
 pub struct Simulation<T>
 where
     T: Individual,
@@ -92,17 +85,17 @@ where
 
         initial
             .into_iter()
-            .map(|individual| {
-                Wrapper {
-                    individual: individual,
-                    fitness: None,
-                }
+            .map(|individual| Wrapper {
+                individual: individual,
+                fitness: None,
             })
             .for_each(|wrapper| {
                 population.push(wrapper);
             });
 
-        Simulation { population: population }
+        Simulation {
+            population: population,
+        }
     }
 
     #[inline]
@@ -110,13 +103,10 @@ where
         self.population
             .iter_mut()
             .filter(|wrapper| wrapper.fitness.is_none())
-            .for_each(|wrapper| {
-                wrapper.fitness = Some(wrapper.individual.fitness())
-            });
+            .for_each(|wrapper| wrapper.fitness = Some(wrapper.individual.fitness()));
 
-        self.population.sort_unstable_by(
-            |a, b| b.fitness.cmp(&a.fitness),
-        );
+        self.population
+            .sort_unstable_by(|a, b| b.fitness.cmp(&a.fitness));
     }
 
     pub fn evolve<F>(&mut self, func: F)
@@ -133,7 +123,6 @@ where
     }
 }
 
-
 pub struct ParSimulation<T>
 where
     T: Individual,
@@ -150,15 +139,15 @@ where
 
         initial
             .into_par_iter()
-            .map(|individual| {
-                Wrapper {
-                    individual: individual,
-                    fitness: None,
-                }
+            .map(|individual| Wrapper {
+                individual: individual,
+                fitness: None,
             })
-            .collect_into(&mut population);
+            .collect_into_vec(&mut population);
 
-        ParSimulation { population: population }
+        ParSimulation {
+            population: population,
+        }
     }
 
     #[inline]
@@ -166,13 +155,10 @@ where
         self.population
             .par_iter_mut()
             .filter(|wrapper| wrapper.fitness.is_none())
-            .for_each(|wrapper| {
-                wrapper.fitness = Some(wrapper.individual.fitness())
-            });
+            .for_each(|wrapper| wrapper.fitness = Some(wrapper.individual.fitness()));
 
-        self.population.par_sort_unstable_by(
-            |a, b| b.fitness.cmp(&a.fitness),
-        );
+        self.population
+            .par_sort_unstable_by(|a, b| b.fitness.cmp(&a.fitness));
     }
 
     pub fn evolve<F>(&mut self, func: F)