Merge remote-tracking branch 'upstream/master'

1 files changed, 17 insertions, 0 deletions

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;
+}