Merge pull request Mq-b#7 from gandyli/main

Create andyli.cpp

src/群友提交/第一题/andyli.cpp

@@ -0,0 +1,17 @@
+#include <algorithm>
+#include <vector>
+#include <functional>
+#include <iostream>
+
+template <typename R, typename F>
+auto operator|(R&& r, F&& f) {
+    for (auto&& x: r)
+        f(x);
+    return r;
+}
+int main() {
+    std::vector v{1, 2, 3};
+    std::function f{[](const int& i) { std::cout << i << ' '; }};
+    auto f2 = [](int& i) { i *= i; };
+    v | f2 | f;
+}