C++17 features

Author: salix5

gframe/irrUString.h

@@ -449,7 +449,7 @@ class ustring16 {
 	//! Returns the length of a ustring16 in full characters.
 	//! \return Length of a ustring16 in full characters.
 	u32 size() const {
-		if (sizeof(wchar_t) == 4) {
+		if constexpr (sizeof(wchar_t) == 4) {
 			return size_raw_;
 		} else {
 			if(size_ != 0xffffffff)
@@ -524,7 +524,7 @@ class ustring16 {
 	//! \return A reference to our current string.
 	void validate() {
 		// Validate all unicode characters.
-		if (sizeof(wchar_t) == 4) {
+		if constexpr (sizeof(wchar_t) == 4) {
 			size_ = size_raw_;
 			return;
 		}

gframe/network.h

@@ -10,7 +10,7 @@
 #include <event2/thread.h>
 #include <type_traits>
 
-#define check_trivially_copyable(T) static_assert(std::is_trivially_copyable<T>::value == true && std::is_standard_layout<T>::value == true, "not trivially copyable")
+#define check_trivially_copyable(T) static_assert(std::is_trivially_copyable_v<T> == true && std::is_standard_layout_v<T> == true, "not trivially copyable")
 
 namespace ygo {
 	constexpr int SIZE_NETWORK_BUFFER = 0x20000;