Gcc Error Is Not A Template
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Vector Is Not A Template
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only takes a minute: Sign up Class 'is not a template type' up vote 11 down vote favorite What does this error mean? Generic.h:25: error: 'Generic' is not a template type Here's Generic. template class Generic: public QObject, public CFG, public virtual Evaluator { Q_OBJECT std::string key_; std::vector layouts_; std::vector static_widgets_; std::map > widget_templates_; std::map widgets_; friend template class int type_; LCDWrapper *wrapper_; protected: LCDText *lcdText_; public: Generic(Json::Value *config, int type); ~Generic(); void CFGSetup(std::string key); void BuildLayouts(); void StartLayout(); int GetType() { return type_; } //T *GetLCD() { return lcd_; } LCDText *GetLCDText() { return lcdText_; } virtual void Connect(){}; virtual void SetupDevice(){}; std::map Widgets(); std::string CFG_Key(); LCDWrapper *GetWrapper() { return wrapper_; } }; Is the problem that it subclasses other classes? I tried an experiment testing that theory, but it didn't produce this error. Edit: Ok, so a couple of you guys pointed out I could be forward declaring Generic elsewhere without making it a template class. That's true. And when I make it a template, I get another error. Property.h:15: error: ISO C++ forbids declaration of 'Generic' with no type template class Generic; class Property : public CFG { Generic *visitor; // line 15 bool is_valid; QScriptValue result; Json::Value *expression; public: Property(const Property &prop); Property(Generic *v, Json::Value *section, std::string name, Json::Value *defval); ~Property(); bool Valid(); int Eval(); double P2N(); int P2INT(); std::string P2S(); void SetValue(Json::Value val); Property operator=(Property prop); }; c++ templat
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and class template policies of this site About Us Learn more about Stack Overflow the c++ template function company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes http://stackoverflow.com/questions/1590688/class-is-not-a-template-type a minute: Sign up Weird C++ templating issues up vote 3 down vote favorite So basically the assignment was we had to create a doubly linked list that's templated generically instead of locked to a single data type. I've tried compiling both with gcc and msvc and both compilers are giving me roughly the same errors so I'm assuming its just my http://stackoverflow.com/questions/1319876/weird-c-templating-issues bad coding and not the quirkyness of one compiler or the other. Currently, I'm getting errors saying that my classes in linkList.h are not a template ../linkList.h:34: error: ‘llist’ is not a template type ../linkList.h:143: error: ‘iter’ is not a template type ../josephus.cpp:14: error: ‘llist’ is not a template ../josephus.cpp:14: error: aggregate ‘llist ppl’ has incomplete type and cannot be defined ../josephus.cpp:15: error: ‘iter’ is not a template linkList.h template class iter { public: iter() { position = sentin; container = sentin->payload; } T get() const { assert(position != sentin); return position->payload; } void next() { position = position->next; } void previous() { position = position->prev; } bool equals(iter itr) const { return position == itr.position; } private: node *position; llist *container; }; josephus.cpp llist ppl; iter pos; int start = static_cast(argv[1]) - 1; int end = static_cast(argv[2]) - 1; Any help in this matter is much appreciated c++ c gcc share|improve this question edited Dec 6 '12 at 13:22 Mike 22.2k1262126 asked Aug 23 '09 at 23:33 user161741 1814 As a matter of style, there's nothing wrong w
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this http://stackoverflow.com/questions/19107184/error-class-is-not-a-template site About Us Learn more about Stack Overflow the company Business Learn more http://stackoverflow.com/questions/30417524/how-to-remove-error-x-is-not-a-class-template about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up error: class is not is not a template up vote 2 down vote favorite I have the following class: #include "SingleNode.h" template class LinkedList { private: SingleNode* head; SingleNode* tail; SingleNode* current; int currentSize; public: LinkedList(); ~LinkedList(); }; As far as I can tell there isn't anything wrong with it. However, the compiler is giving me the following: error: 'LinkedList' is not a template Why isn't is not a the compiler recognizing it as a template? c++ class templates typename share|improve this question asked Oct 1 '13 at 2:53 Hugo 5621025 add a comment| 1 Answer 1 active oldest votes up vote 11 down vote accepted Remove the from the declaration: template class LinkedList { share|improve this answer answered Oct 1 '13 at 3:37 Adam 11k22562 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged c++ class templates typename or ask your own question. asked 3 years ago viewed 5964 times active 3 years ago Related 641Where and why do I have to put the “template” and “typename” keywords?6Typedef inside template class doesn't work1access overloaded template functions10static template functions in a class0Strange typenames and constructor in a template0Template class generate errors in C++-2C++ - Using typename and template error1Template
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up how to remove error : X is not a class template up vote 0 down vote favorite I'm no expert in using templates but I'm not sure why I'm getting error: 'SLinked_List' is not a class template: friend class SLinked_List; in the definition of class SNode. What is wrong with this piece of code? Thank you, Pranav #include #include template class SNode{ friend class SLinked_List; private: T data; SNode* next; }; template class SLinked_List{ private: SNode* head; public: SLinked_List(){ head = nullptr; } bool empty() const { return head == nullptr; } void insert_first (const T&); }; template void SLinked_List :: insert_first (const T& t){ SNode* node = new SNode; node->data = t; node->next = head; head = node; } int main(){ SLinked_List ls; ls.insert_first("Hello"); return 0; } templates c++11 share|improve this question asked May 23 '15 at 20:57 Pranav 1147 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted When you use template arguments to refer to a name you are saying that this type already exists as a template and I want to reference a specific specialization of that template. Inside SNode, SLinked_List hasn't been declared yet, so this can't be allowed because the compiler doesn't even know if it's a template yet. It's clear you want to befriend the specializatio