refactor: simplify pairs using itertools package

manhunto · manhunto · commit 58fe25616dc8 · 2024-12-10T17:15:33.000+01:00
diff --git a/src/utils/pair_generator.rs b/src/utils/pair_generator.rs
@@ -1,11 +1,10 @@
+use itertools::Itertools;
+
 pub fn pairs<T>(list: Vec<T>) -> Vec<(T, T)>
 where
     T: Copy,
 {
-    list.iter()
-        .enumerate()
-        .flat_map(|(i, &a)| list.iter().clone().skip(i + 1).map(move |&b| (a, b)))
-        .collect()
+    list.into_iter().tuple_combinations().collect()
 }
 
 #[cfg(test)]

Original file line number	Diff line number	Diff line change
`@@ -1,11 +1,10 @@`
	`1`	`+use itertools::Itertools;`
	`2`	`+`
`1`	`3`	`pub fn pairs<T>(list: Vec<T>) -> Vec<(T, T)>`
`2`	`4`	`where`
`3`	`5`	`T: Copy,`
`4`	`6`	`{`
`5`		`- list.iter()`
`6`		`- .enumerate()`
`7`		`- .flat_map(\|(i, &a)\| list.iter().clone().skip(i + 1).map(move \|&b\| (a, b)))`
`8`		`- .collect()`
	`7`	`+ list.into_iter().tuple_combinations().collect()`
`9`	`8`	`}`
`10`	`9`
`11`	`10`	`#[cfg(test)]`