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Error C2995 Template Function Has Already Been Defined

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Function Template Has Already Been Defined Visual Studio

Learn more about Stack Overflow the company Business Learn more about hiring developers class template has already been defined c++ or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack error c2953: class template has already been defined 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 C2995: function template has already been

C++ Unrecognizable Template Declaration/definition

defined up vote 2 down vote favorite this code produces 17 error C2995: function template has already been defined; there was a separate set of errors before adding the #include "set.h" header. There is a private .cpp and .h files associated with this. /* * File: private/set.cpp * Last modified on Thu Jun 11 09:34:08 2009 by eroberts * ----------------------------------------------------- * This file contains the implementation of

C2955

the set.h interface. * Because of the way C++ compiles templates, this code must be * available to the compiler when it reads the header file. */ //#ifdef _set_h //original code #ifndef _set_h #define _set_h #include "stdafx.h" #include "set.h" using namespace std; template Set::Set(int (*cmp)(ElemType, ElemType)) : bst(cmp) { cmpFn = cmp; } template Set::~Set() { /* Empty */ } template int Set::size() { return bst.size(); } template bool Set::isEmpty() { return bst.isEmpty(); } template void Set::add(ElemType element) { bst.add(element); } template void Set::remove(ElemType element) { bst.remove(element); } template bool Set::contains(ElemType element) { return find(element) != NULL; } template ElemType *Set::find(ElemType element) { return bst.find(element); } template void Set::clear() { bst.clear(); } /* * Implementation notes: Set operations * ------------------------------------ * The code for equals, isSubsetOf, unionWith, intersectWith, and subtract * is similar in structure. Each one uses an iterator to walk over * one (or both) sets, doing add/remove/comparision. */ template bool Set::equals(Set & otherSet) { if (cmpFn != otherSet.cmpFn) { Error("Equals: sets have different comparison functions"); } Iterator thisItr = iterator(), otherItr = otherSet.iterator(); while (thisItr.hasNext()

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Template Specialization

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 c++ template class minute: Sign up C++ Error: class template has already been defined up vote 1 down vote favorite 2 I am getting this error in Visual Studio 2010 Pro: "Error C2953: 'list_1::Node' : class template has already been defined" Here is my http://stackoverflow.com/questions/11094310/error-c2995-function-template-has-already-been-defined Node.cpp class list that is getting the error (on line 24, the last line of the code.) #include "Node.h" namespace list_1 { template struct Node { //Constructor Node(T D) { data = d; next = NULL; } } ;} And the Node.H file: #pragma once namespace list_1 { template struct Node { T data; Node *next; // Constructor // Postcondition: Node (T d); }; } I already looked here, which doesn't help me since I am already using http://stackoverflow.com/questions/14544771/c-error-class-template-has-already-been-defined #pragma once, and in the list header file I have #ifndef LIST_H and #define LIST_H. This question doesn't suit my needs and everything in this answer seems to be related to having the template bit that I already have. If I try making it struct Node I get the error "error C2753: 'list_1::Node' : partial specialization cannot match argument list for primary template" So I am at a loss at what to do. Please help. c++ templates share|improve this question asked Jan 27 '13 at 5:41 Sír Jeff Meadows 1013 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote accepted I agree with your compiler.. You are defining the struct twice. To fix - Remove from your header. And your .cpp should look like this. #include "Node.h" namespace list_1 { //Constructor template Node::Node(T D){ ... } } Essentially, the struct block only appears in the header. Additionally I wonder if you are aware of the problems involving defining the template classes members in a .cpp file share|improve this answer edited Jan 27 '13 at 5:48 answered Jan 27 '13 at 5:41 Karthik T 22.6k23155 Ok... But when I comment out the struct bit, I get the error "IntelliSense: expected a ';'" on the line with '{' under the 'Node(T D)'. –Sír Jeff Meadows Jan 27 '13 at 5:46 @SírJeffMeadows it needs to be as I have given in my answer, merely commenting is insuffic

Page 1 of 1 New Topic/Question Reply 9 Replies - 3727 Views - Last Post: 11 April 2014 - http://www.dreamincode.net/forums/topic/344485-error-c2995-function-template-has-already-been-defined/ 06:49 AM Rate Topic: #1 DoomLead New D.I.C Head Reputation: 0 Posts: 6 Joined: 31-January 14 error c2995 function template has already been defined Posted 10 April 2014 - 06:53 PM I am sorry I have been trying to compile this program for 3 days it is a class assignment and it has already is due Monday. the subject is my error. I know it has something to do with including the cpp file with the header file however my textbook says this is what I must do in order to use templates. I have tried 2 compilers Code Blocks and Microsoft Visual C++ express 2010. here has already been is my code: header file #pragma once #ifndef _NODE #define _NODE template class Node { private: ItemType item; // A data item Node* next; // Pointer to next node public: Node(); Node(const ItemType& anItem); Node(const ItemType& anItem, Node* nextNodePtr); void setItem(const ItemType& anItem); void setNext(Node* nextNodePtr); ItemType getItem() const ; Node* getNext() const ; }; // end Node #include "node.cpp" #endif Cpp file #include "StdAfx.h" #include "Node.h" #include template Node::Node() : next(nullptr) { } template Node::Node(const ItemType& anItem) : item(anItem), next(nullptr) { } template Node::Node(const ItemType& anItem, Node* nextNodePtr) : item(anItem), next(nextNodePtr) { } template void Node::setItem(const ItemType& anItem) { item = anItem; } template void Node::setNext(Node* nextNodePtr) { next = nextNodePtr; } template ItemType Node::getItem() const { return item; } template Node* Node::getNext() const { return next; } Is This A Good Question/Topic? 0 Back to top MultiQuote Quote + Reply Replies To: error c2995 function templat

 

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