Iterator repeat: no infinite loop for last and count

hkBst · hkBst · commit 7293765c14fc · 2025-09-10T12:40:29.000Z
diff --git a/library/core/src/iter/sources/repeat.rs b/library/core/src/iter/sources/repeat.rs
@@ -98,11 +98,11 @@ impl<A: Clone> Iterator for Repeat<A> {
     }
 
     fn last(self) -> Option<A> {
-        loop {}
+        Some(self.element)
     }
 
     fn count(self) -> usize {
-        loop {}
+        panic!("iterator is infinite");
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -98,11 +98,11 @@ impl<A: Clone> Iterator for Repeat<A> {`
`98`	`98`	`}`
`99`	`99`
`100`	`100`	`fn last(self) -> Option<A> {`
`101`		`- loop {}`
	`101`	`+ Some(self.element)`
`102`	`102`	`}`
`103`	`103`
`104`	`104`	`fn count(self) -> usize {`
`105`		`- loop {}`
	`105`	`+ panic!("iterator is infinite");`
`106`	`106`	`}`
`107`	`107`	`}`
`108`	`108`