From 5f2fdb01bdb9892cb8cf5bf1b1787db36587e1d6 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Tue, 20 Jan 2015 17:06:20 +0100
Subject: Implemented higher order list queries `All` and `Any` * in terms of
 `Fold` and `Map`, not the most efficient but reasonably concise * added
 appropriate test cases

---
 src/list/operation/higher/query.h | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/list/operation/higher/query.h

(limited to 'src/list/operation/higher/query.h')

diff --git a/src/list/operation/higher/query.h b/src/list/operation/higher/query.h
new file mode 100644
index 0000000..56bb203
--- /dev/null
+++ b/src/list/operation/higher/query.h
@@ -0,0 +1,30 @@
+#ifndef TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_QUERY_H_
+#define TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_QUERY_H_
+
+#include "operation/logic.h"
+
+namespace tav {
+
+template <
+	template<typename> class Function,
+	typename                 List
+>
+using Any = Fold<
+	Or,
+	Boolean<false>,
+	typename Map<Function, List>::type
+>;
+
+template <
+	template<typename> class Function,
+	typename                 List
+>
+using All = Fold<
+	And,
+	Boolean<true>,
+	typename Map<Function, List>::type
+>;
+
+}
+
+#endif  // TYPEASVALUE_SRC_LIST_OPERATION_HIGHER_QUERY_H_
-- 
cgit v1.2.3