tiny bug fix

opt.hpp

@@ -67,7 +67,7 @@ namespace rlib {
             if(required && pos == args.cend())
                 throw std::invalid_argument("Required argument '{}' not provided."_format(argName));
             if(pos == args.cend())
-                return std::move(def);
+                return def;
             rlib_defer(([&, pos]{if(!useEqualSym) args.erase(pos+1); args.erase(pos);}));
             if(useEqualSym)
                 return pos->substr(argName.size() + 1);
@@ -91,7 +91,7 @@ namespace rlib {
                 else
                     return def;
             }
-            return std::move(value);
+            return value;
         }
 
         rlib::string getValueArg(const std::string &longName, const char *shortName)

string.hpp

@@ -131,7 +131,7 @@ namespace rlib {
         inline char *_format_string_c_helper(const char *fmt, ...)
         {
             int n;
-            int size = std::strlen(fmt);
+            size_t size = std::strlen(fmt);
             char *p, *np;
             va_list ap;
 
@@ -186,10 +186,10 @@ namespace rlib {
             return this->c_str();
         }
         std::string as(as_helper<std::string>) const {
-            return std::move(*this);
+            return *this;
         }
         rlib::string as(as_helper<rlib::string>) const {
-            return std::move(*this);
+            return *this;
         }
         char as(as_helper<char>) const {
             if(size() > 1)

sys/sio.hpp

@@ -7,12 +7,16 @@
 #include <winsock2.h>
 #include <windows.h>
 #include <ws2tcpip.h>
+namespace rlib {
+    using ssize_t = int;
+}
 #else
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netdb.h>
 #include <fcntl.h>
 #include <arpa/inet.h>
+#include <unistd.h>
 #endif
 
 // Include winsock2.h before windows.h
@@ -501,6 +505,11 @@ namespace rlib {
                 currvptr = (char *)vptr + current / 2;
             }
         }
+        static void close_ex(sockfd_t fd) {
+            if (closesocket(fd) == SOCKET_ERROR) {
+                throw std::runtime_error("closeSocket failed. error code: " + std::to_string(WSAGetLastError()));
+            }
+        }
 #else 
     // POSIX sockIO
     public:
@@ -586,6 +595,11 @@ namespace rlib {
                 currvptr = (char *)vptr + current / 2;
             }
         }
+        static void close_ex(sockfd_t fd) {
+            if (close(fd) == -1) {
+                throw std::runtime_error("close failed. error code: " + std::to_string(errno));
+            }
+        }
 #endif
 
 #ifndef MSG_NOSIGNAL