From 0e84bd9c831eda928e5c1cf5bc02b63902aee9ae Mon Sep 17 00:00:00 2001
From: deadmarshal <adeadmarshal@gmail.com>
Date: Wed, 29 Jun 2022 12:03:20 +0430
Subject: added challenge 171

---
 challenge-171/deadmarshal/cpp/ch-2.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 challenge-171/deadmarshal/cpp/ch-2.cpp

(limited to 'challenge-171/deadmarshal/cpp/ch-2.cpp')

diff --git a/challenge-171/deadmarshal/cpp/ch-2.cpp b/challenge-171/deadmarshal/cpp/ch-2.cpp
new file mode 100644
index 0000000000..ff23f617ed
--- /dev/null
+++ b/challenge-171/deadmarshal/cpp/ch-2.cpp
@@ -0,0 +1,17 @@
+#include<iostream>
+#include<functional>
+
+std::function<int(int)> f = [](auto n){return n + 2;};
+std::function<int(int)> g = [](auto n){return n * 2;};
+
+template<typename F, typename G>
+auto compose(F f, G g)
+{
+  return [f,g](auto n){return f(g(n));};
+}
+
+int main()
+{
+  std::cout << compose(f, g)(5) << '\n';
+  return 0;
+}
-- 
cgit