core: add unwrap methods to dvec, either, and mutable

Author: Erick Tryzelaar

src/libcore/dvec.rs

@@ -110,6 +110,9 @@ priv impl<A> DVec<A> {
             self.data = move data;
         }
     }
+
+    #[inline(always)]
+    fn unwrap(self) -> ~[A] { unwrap(self) }
 }
 
 // In theory, most everything should work with any A, but in practice

src/libcore/either.rs

@@ -142,6 +142,14 @@ pub pure fn unwrap_right<T,U>(eith: Either<T,U>) -> U {
     }
 }
 
+impl<T, U> Either<T, U> {
+    #[inline(always)]
+    fn unwrap_left(self) -> T { unwrap_left(self) }
+
+    #[inline(always)]
+    fn unwrap_right(self) -> U { unwrap_right(self) }
+}
+
 #[test]
 fn test_either_left() {
     let val = Left(10);

src/libcore/mutable.rs

@@ -73,6 +73,9 @@ impl<T> Data<T> {
             op(unsafe{transmute_immut(&mut self.value)})
         }
     }
+
+    #[inline(always)]
+    fn unwrap(self) -> T { unwrap(self) }
 }
 
 #[test]