初始化内容

third/cpp-subprocess/test/test_main.cc

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <utility>
+
+struct bufsize { int siz_; };
+struct executable { std::string exe_; };
+
+class Ex {
+public:
+    template <typename... Args>
+    Ex(Args&&... args) {
+        set_options(std::forward<Args>(args)...);
+    }
+
+    template <typename T>
+    void set_options(T&& arg) {
+        set_option(std::forward<T>(arg));
+    }
+
+    template <typename T, typename... Args>
+    void set_options(T&& first, Args&&... rem_args) {
+        set_option(std::forward<T>(first));
+        set_options(std::forward<Args>(rem_args)...);
+    }
+
+    void set_option(bufsize&& bufs) {
+        std::cout << "bufsize opt" << std::endl;
+        bufsiz_ = bufs.siz_;
+    }
+    void set_option(executable&& exe) {
+        std::cout << "exe opt" << std::endl;
+        exe_name_ = std::move(exe.exe_);
+    }
+
+private:
+    int bufsiz_ = 0;
+    std::string exe_name_;
+};
+
+int main() {
+    Ex e(bufsize{1}, executable{"finger"});
+    return 0;
+}