version 4.2.0

move toStdFunction() to pibase.h
refactor PIParseHelper, now it much more abstract and useful
fix PIIODevice::createFromFullPath() when whitespaces at start or end are presence
PIStreamPacker add events for start and end packet receive
PIClientServer::ClientBase add virtual methods for start and end packet receive. also one can enable diagnostics with enableDiagnostics() method
PICout now call flush() on each end of output
add PIString::entries(const PIString & str)

libs/main/core/pibase.h

@@ -720,4 +720,20 @@ struct PIP_EXPORT PINonTriviallyCopyable {
 inline PINonTriviallyCopyable::PINonTriviallyCopyable(PINonTriviallyCopyable &&) noexcept = default;
 
 
+template<typename T>
+struct FunctionType {
+	using Type = void;
+};
+
+template<typename Ret, typename Class, typename... Args>
+struct FunctionType<Ret (Class::*)(Args...) const> {
+	using Type = std::function<Ret(Args...)>;
+};
+
+template<typename L>
+typename FunctionType<decltype(&L::operator())>::Type toStdFunction(L const & func) {
+	return func;
+}
+
+
 #endif // PIBASE_H