Use cmp_proc in binary_search

core/slice/slice.odin

@@ -158,15 +158,7 @@ linear_search_proc :: proc(array: $A/[]$T, f: proc(T) -> bool) -> (index: int, f
 binary_search :: proc(array: $A/[]$T, key: T) -> (index: int, found: bool)
 	where intrinsics.type_is_ordered(T) #no_bounds_check
 {
-	// I would like to use binary_search_by(array, key, cmp) here, but it doesn't like it:
+	return binary_search_by(array, key, cmp_proc(T))
-	// Cannot assign value 'cmp' of type 'proc($E, $E) -> Ordering' to 'proc(i32, i32) -> Ordering' in argument
-	return binary_search_by(array, key, proc(key: T, element: T) -> Ordering {
-		switch {
-			case element < key: return .Less
-			case element > key: return .Greater
-			case:               return .Equal
-		}
-	})
 }
 
 @(require_results)