diff --git a/alib2std/src/algorithm b/alib2std/src/algorithm
index 08d9642f79e20752051ef48a71d089f5043ee75f..dcf693aac1e911764774c5347fce3a693b0aac2d 100644
--- a/alib2std/src/algorithm
+++ b/alib2std/src/algorithm
@@ -2,6 +2,7 @@
 #define __ALGORITHM_HEADER_WRAPPER_
 
 #include <bits/../algorithm>
+#include <functional>
 #include "extensions/algorithm.hpp"
 
 #endif /* __ALGORITHM_HEADER_WRAPPER_ */
diff --git a/alib2std/src/extensions/algorithm.hpp b/alib2std/src/extensions/algorithm.hpp
index 168543815628cef2c718352a39375fd06950a748..43b11b334c7da94522b7dd8e638ac7e3a55b0c4b 100644
--- a/alib2std/src/extensions/algorithm.hpp
+++ b/alib2std/src/extensions/algorithm.hpp
@@ -29,6 +29,13 @@ bool excludes(InputIt1 first1, InputIt1 last1, InputIt2 first2, InputIt2 last2)
 	return excludes(first1, last1, first2, last2, std::less<decltype(*first1)>());
 }
 
+template<class ResType, class InType, template < typename ... > class ContainerType, class Callback >
+ContainerType<ResType> transform(const ContainerType<InType> & in, Callback transform) {
+	ContainerType<ResType> res;
+	std::transform ( in.begin ( ), in.end ( ), std::inserter ( res, res.begin ( ) ), transform );
+	return res;
+}
+
 } /* namespace std */
 
 #endif /* ALGORITHM_HPP_ */
diff --git a/alib2std/test-src/extensions/AlgorithmTest.cpp b/alib2std/test-src/extensions/AlgorithmTest.cpp
index aa30eb250c0e9a2e83a1c23ae0f93a43e7c72538..7037d6dc073f2e02ebe31955c93c59fa8bde6f9a 100644
--- a/alib2std/test-src/extensions/AlgorithmTest.cpp
+++ b/alib2std/test-src/extensions/AlgorithmTest.cpp
@@ -49,3 +49,14 @@ void AlgorithmTest::testExclude() {
 	}
 }
 
+void AlgorithmTest::testTransform() {
+	std::set<int> in = {1, 2, 3, 4};
+	std::set<long> ref = {2, 3, 4, 5};
+
+/*	std::function<long(const int&)> lamb = [](const int& elem) { return (long) elem + 1; };
+	std::set<long> out = std::transform<long>(in, lamb); //*/
+
+	std::set<long> out = std::transform<long>(in, [](const int& elem) { return (long) elem + 1; });
+
+	CPPUNIT_ASSERT(ref == out);
+}
diff --git a/alib2std/test-src/extensions/AlgorithmTest.h b/alib2std/test-src/extensions/AlgorithmTest.h
index 45b6f3efcebaa2399816eaf5853fcb10cbc82012..0483ba815718109e632092ed92a11387daa62c81 100644
--- a/alib2std/test-src/extensions/AlgorithmTest.h
+++ b/alib2std/test-src/extensions/AlgorithmTest.h
@@ -7,6 +7,7 @@ class AlgorithmTest : public CppUnit::TestFixture
 {
   CPPUNIT_TEST_SUITE( AlgorithmTest );
   CPPUNIT_TEST( testExclude );
+  CPPUNIT_TEST( testTransform );
   CPPUNIT_TEST_SUITE_END();
 
 public:
@@ -14,6 +15,7 @@ public:
   void tearDown();
 
   void testExclude();
+  void testTransform();
 };
 
 #endif  // ALGORITHM_TEST_H_