tiny update. opt::getCommand interface update

Makefile

@@ -28,8 +28,8 @@ install_cmake: install_library
 install: install_header install_library install_cmake
 
 uninstall:
-	rm -rf $(PREFIX)/include/rlib
-	rm $(PREFIX)/lib/libr.a
+	rm -rf $(PREFIX)/include/rlib $(PREFIX)/lib/cmake/rlib
+	rm -f $(PREFIX)/lib/libr.a
 
 clean:
 	rm *.o *.a

impl/traceable_list.hpp

@@ -31,6 +31,8 @@ namespace rlib {
                 friend class traceable_list;
 
             public:
+                using pointer = T *;
+                using reference = T &;
                 explicit iterator(node *ptr) : ptr(ptr) {}
 
                 explicit iterator(T *data_pointer) : ptr(reinterpret_cast<node *>(data_pointer)) {

opt.hpp

@@ -25,16 +25,33 @@ namespace rlib {
     public:
         opt_parser() = delete;
         opt_parser(size_t arglen, char **argv) {
+            if(argv[0] == nullptr)
+                throw std::runtime_error("Invalid argv passed to rlib::opt_parser. argv[0] is nullptr.");
+            arg0 = argv[0];
             for(size_t cter = 1; cter < arglen; ++cter)
                 args.push_back(std::string(argv[cter]));
         }
 
-        rlib::string getCommand() {
+        rlib::string getSubCommand() {
+            if(args.empty())
+                throw std::runtime_error("No sub-command available.");
             auto cmd = std::move(args[0]);
             args.erase(args.begin());
             return std::move(cmd);
         }
 
+        rlib::string getSubCommand(const std::string &def) {
+            if(args.empty())
+                return def;
+            auto cmd = std::move(args[0]);
+            args.erase(args.begin());
+            return std::move(cmd);
+        }
+
+        rlib::string getSelf() {
+            return arg0;
+        }
+
         rlib::string getValueArg(const std::string &argName, bool required = true, const std::string &def = std::string())
         { //If required argument not exist, I'll throw. Else, return "" if arg is not read.
             using rlib::literals::operator "" _format;
@@ -102,6 +119,7 @@ namespace rlib {
         }
     private:
         std::vector<std::string> args;
+        std::string arg0;
     };
 }