1 files changed, 24 insertions, 1 deletions
diff --git a/src/index.rs b/src/index.rs
index b1f6f452..daec02f7 100644
--- a/src/index.rs
+++ b/src/index.rs
@@ -17,7 +17,7 @@
 /// Indexing types and implementations for Grid and Line
 use std::cmp::{Ord, Ordering};
 use std::fmt;
-use std::ops::{self, Deref, Add, Range};
+use std::ops::{self, Deref, Add, Range, RangeInclusive};
 
 /// The side of a cell
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
@@ -210,6 +210,29 @@ impl<T> From<Range<T>> for IndexRange<T> {
     }
 }
 
+// can be removed if range_contains is stabilized
+
+pub trait Contains {
+    type Content;
+    fn contains_(&self, item: Self::Content) -> bool;
+}
+
+impl<T: PartialOrd<T>> Contains for Range<T> {
+    type Content = T;
+    fn contains_(&self, item: Self::Content) -> bool {
+        (self.start <= item) && (item < self.end)
+    }
+}
+
+impl<T: PartialOrd<T>> Contains for RangeInclusive<T> {
+    type Content = T;
+    fn contains_(&self, item: Self::Content) -> bool {
+        if let &RangeInclusive::NonEmpty{ref start, ref end} = self {
+            (*start <= item) && (item <= *end)
+        } else { false }
+    }
+}
+
 macro_rules! ops {
     ($ty:ty, $construct:expr) => {
         add!($ty, $construct);