diff options
| -rw-r--r-- | src/libcore/iter/sources.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libcore/iter/sources.rs b/src/libcore/iter/sources.rs index 103d02da22f..59220b32091 100644 --- a/src/libcore/iter/sources.rs +++ b/src/libcore/iter/sources.rs @@ -443,6 +443,8 @@ unsafe impl<A, F: FnOnce() -> A> TrustedLen for OnceWith<F> {} /// Basic usage: /// /// ``` +/// #![feature(iter_once_with)] +/// /// use std::iter; /// /// // one is the loneliest number |