From 0fa6af3cd57f578e34fe6c87b9e92af3dd74732f Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Wed, 4 Mar 2015 18:26:11 -0500
Subject: [PATCH] Added additional 'map' functions.

---
 peglib.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/peglib.h b/peglib.h
index fd46d52..1d99766 100644
--- a/peglib.h
+++ b/peglib.h
@@ -248,6 +248,16 @@ struct SemanticValues : protected std::vector<SemanticValue>
         }
         return r;
     }
+
+    template <typename T>
+    auto map() const -> vector<T> {
+        return this->map([](const SemanticValue& v) { return v.get<T>(); });
+    }
+
+    template <typename T, typename It>
+    auto map(It beg, It end) const -> vector<T> {
+        return this->map(beg, end, [](const SemanticValue& v) { return v.get<T>(); });
+    }
 };
 
 /*