diff options
| -rw-r--r-- | src/libcore/ops/range.rs | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/libcore/ops/range.rs b/src/libcore/ops/range.rs index 59ee40fdda4..b01a769eda7 100644 --- a/src/libcore/ops/range.rs +++ b/src/libcore/ops/range.rs @@ -362,12 +362,20 @@ impl<Idx> RangeInclusive<Idx> { /// ``` #[unstable(feature = "inclusive_range_methods", issue = "49022")] #[inline] - pub fn new(start: Idx, end: Idx) -> Self { + pub const fn new(start: Idx, end: Idx) -> Self { Self { start, end } } /// Returns the lower bound of the range (inclusive). /// + /// When using an inclusive range for iteration, the values of `start()` and + /// [`end()`] are unspecified after the iteration ended. To determine + /// whether the inclusive range is empty, use the [`is_empty()`] method + /// instead of comparing `start() > end()`. + /// + /// [`end()`]: #method.end + /// [`is_empty()`]: #method.is_empty + /// /// # Examples /// /// ``` @@ -383,6 +391,14 @@ impl<Idx> RangeInclusive<Idx> { /// Returns the upper bound of the range (inclusive). /// + /// When using an inclusive range for iteration, the values of [`start()`] + /// and `end()` are unspecified after the iteration ended. To determine + /// whether the inclusive range is empty, use the [`is_empty()`] method + /// instead of comparing `start() > end()`. + /// + /// [`start()`]: #method.start + /// [`is_empty()`]: #method.is_empty + /// /// # Examples /// /// ``` |