C++ :: Template Errors - No Matching Function For Call To Load
Oct 22, 2013
My load function isnt working. I've tested it and returned it as an int and it worked but when i tried to compile when i changed it to a template i started getting the errors and I'm not sure how to fix it:
all_sort.cpp:41:15: error: no matching function for call to 'load'
int *value = load("./integers.txt", size);
^~~~
./bubble_sort.h:44:4: note: candidate template ignored: couldn't infer template
argument 'T'
T *load(const char* x, int &size) {
[Code] ....
I'm trying to use my load function to load integers from a file into and array and then return it back.
#include "bubble_sort.h"
#include <iostream>
#include <cstdlib>
#include <string>
using namespace std;
int main(){
int n, pick = 1, size = 0;
I need to call one function on my C++ program. I made one root calculator for functions, but, this doesn't work.
// FUNCION QUE CALCULA LA DIFERENCIA ENTRE 2 VECTORES real mn_error_vectores(Array1D< real > &u, Array1D< real > &v) { int i; if(u.dim()!=v.dim()){ printf("mn_error_vectores() : arrays of different dimensions
I'm having this pain in the ass error (No matching function for call to Data::Data() ) on this block of code:
Etapa::Etapa(string nm, float dist, string loc, Data dt) { nome = nm; distancia = dist; local = loc; data = dt; }
[Code].....
I guess this is happening because I'm trying to give Etapa an argument of Data type and I can't do it or put it in a variable since it has 3 parameteres (mes, dia, ano).
This code from [URL] as it is gives compile error I can't understand.
#include <iostream> using namespace std; class Rectangle { int width, height;
[Code] ....
Gives error
(g++ first.cpp) first.cpp: In function ‘int main()’: first.cpp:14:38: error: no matching function for call to ‘Rectangle::Rectangle(<brace-enclosed initialiser list>)’
Every time I try to compile this, I get the error message, "error: no matching function for call to" on lines 18, 45, and 46. Basically every time I try to call on the function sales and printStock. I don't know what the message means or why I get it.
#include <iostream> #include <fstream> #define N 10 using namespace std;
For whatever reason, I get an error meassage about lines 53-57 saying there is no matching function to call to. Yet the header and the prototype are correct (I think anyways).
#include <iostream> #include <string> #include <fstream> #define N 10 using namespace std; class cust{
And came across the following error during link stage: "/usr/include/c++/4.6/bits/stl_vector.h:1080:4: error: no matching function for call to ‘std::vector<cv::Point_<int> >::_M_fill_initialize(std::vector<cv::Point_<int> >::size_type, int&)’ "
I have to find at least 5 errors in the following class template. I have found three and it now compiles, here is the template
#include <map> #include <utility> template <class T> class foo{ public : foo(T bar1, T bar2){ _bar1.push_back(bar1); _bar2.insert( std::pair<T,T>(bar1,bar2) );
[Code] ....
The errors I believe I have found are as follows: the vector library has not been added, the map requires two type arguments rather than one and the object which is created in main doesn't pass any values to the constructor. I fixed all of these errors and the code now compiles without errors, however the problem asks for five.
what my compiling errors mean, and what I should do to fix them: The following is my header & Implementation files. Note, the purpose of this class is a built in Array.
I have to find at least 5 errors in the following class template. I have found three and it now compiles, here is the template
#include <map> #include <utility> template <class T> class foo{ public :
[Code]....
The errors I believe I have found are as follows: the vector library has not been added, the map requires two type arguments rather than one and the object which is created in main doesn't pass any values to the constructor. I fixed all of these errors and the code now compiles without errors, however the problem asks for five.
#include "tensor.h" int main() { Tensor<2,-2> m = {{1,2},{1,3}}; Tensor<2> v = {1,5}; std::cout<<m*v<<"
[Code] ....
Why do I get an ambiguity and why is not the wanted operator*-overload (the last one in the tensor.h file) not even mentioned as one of the candidates? Is it clear what I want to do? And if so, what can I do to make the call unambiguous?
This week we are learning to use templates, and I don't understand how to call my member functions with my template based class. I tried the standard convention of calling member functions, but I keep getting an error saying name following"::" must be a class or namespace name. I'm thinking my problem lies with my typename T, but I am unsure. Line 16 is where I am getting tripped up.
#include "stdafx.h" #include <iostream> #include <string> using namespace std; template<class T> T Set { public:
I'm trying to implement a simple template array class, but when i came into the operator< i actually have to use a template :
my code is something like :
template<typename _Type, std::size_t _Size> class array { public :
[Code] ......
but i am having an error of shadows template param 'class _Type' is it w/ the name conflict between the array template parameter and the function template parameter ?
Here are the errors: no matches converting function `concat' to type `class Dlist (*)(class List<int>, class List<int>)' error candidates are: template<class T> Dlist concat(Dlist, Dlist)
no matching function for call to `concat(Dlist&, Dlist&)'
I can't understand what the compiler is trying to tell me.
Ive used a similar approach to extract data from a txt file before, however now it seems to crash when i get to the load, below is the code with a NOTE next to where it crashes. This is homework so no code but just information on why it was working for one dataset but not his new one.
/* The purpose of this program is to read in data and sort with selection and insertion sort. It will read data from file and write to a new file the sorted data */ #include <iostream> #include <fstream> using namespace std; bool openFile(ifstream&);
In the above program, I define an operator<< function in global namespace which has exactly the same signature as the one define in <string> header : [URL] . In the main function, I call operator<< on cout and a string, after which I guess it would cause ambiguity. The result is out of my anticipation, it compiles and prints [hi]. So I guess my function is a better match because it does not require argument-dependent lookup (ADL). Moreover, even if I add using namespace std; at the beginning of the main function, the program still compiles and prints [hi].
In short, I have two question:
#1 : Why is my function a better match (therefore no ambiguity) in the two cases respectively (with and without using namespace std;)?
#2 : Does using namespace affect ADL? Is ADL still performed after applying using namespace, or is it not performed because the function is thrown into global namespace?
where 'g()' returns an object of the element type. However, the compiler is claiming, no matter how I write a call to the overload, the original template is selected and/or the overload is invalid, depending on the various ways I attempt to write said overload.
What am I doing wrong with static members and methods here?
compiler errors:
1>test.obj : error LNK2005: "private: static int Test::count" (?count@Test@@0HA) already defined in main.obj 1>c:usersjamesdocumentsvisual studio 2013Projectsstatic_testReleasestatic_test.exe : fatal error LNK1169: one or more multiply defined symbols found test.h #ifndef TEST_H_ #define TEST_H_ class Test {
