From a61fb6e542d8094583bbd2bf6dc34b28d0bd7ae0 Mon Sep 17 00:00:00 2001
From: "H. S. Teoh" <hsteoh@quickfur.ath.cx>
Date: Thu, 27 Nov 2014 10:20:20 -0800
Subject: [PATCH] Use Flag instead of single-use enum.

---
 std/algorithm.d | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/std/algorithm.d b/std/algorithm.d
index d52dae1c1..7667cbf21 100644
--- a/std/algorithm.d
+++ b/std/algorithm.d
@@ -4552,11 +4552,8 @@ Group!(pred, Range) group(alias pred = "a == b", Range)(Range r)
 /**
  * Specifies whether a predicate is an equivalence relation.
  */
-enum IsEquivRelation : bool
-{
-    no,  /// Predicate is not an equivalence relation
-    yes, /// Predicate is an equivalence relation
-}
+import std.typecons : Flag;
+alias IsEquivRelation = Flag!"isEquivRelation";
 
 // Used by implementation of groupBy.
 private struct GroupByChunkImpl(alias pred, IsEquivRelation isEquivRelation, Range)