Rollup merge of #35041 - frewsxcv:range-rangeargument, r=GuillaumeGomez

Add doc examples for `range::RangeArgument::{start,end}`.

None

1 files changed, 32 insertions, 0 deletions

diff --git a/src/libcollections/range.rs b/src/libcollections/range.rs
index 4e39191b472..1badc72aed0 100644
--- a/src/libcollections/range.rs
+++ b/src/libcollections/range.rs
@@ -23,6 +23,22 @@ pub trait RangeArgument<T> {
     /// Start index (inclusive)
     ///
     /// Return start value if present, else `None`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// #![feature(collections)]
+    /// #![feature(collections_range)]
+    ///
+    /// extern crate collections;
+    ///
+    /// # fn main() {
+    /// use collections::range::RangeArgument;
+    ///
+    /// assert_eq!((..10).start(), None);
+    /// assert_eq!((3..10).start(), Some(&3));
+    /// # }
+    /// ```
     fn start(&self) -> Option<&T> {
         None
     }
@@ -30,6 +46,22 @@ pub trait RangeArgument<T> {
     /// End index (exclusive)
     ///
     /// Return end value if present, else `None`.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// #![feature(collections)]
+    /// #![feature(collections_range)]
+    ///
+    /// extern crate collections;
+    ///
+    /// # fn main() {
+    /// use collections::range::RangeArgument;
+    ///
+    /// assert_eq!((3..).end(), None);
+    /// assert_eq!((3..10).end(), Some(&10));
+    /// # }
+    /// ```
     fn end(&self) -> Option<&T> {
         None
     }