C++ :: Template Function Overloading Resolution Different In Visual Studio And GCC
Jun 13, 2014
I stumbled upon an unexpected difference between GCC and VisualStudio: Different overloaded functions are called in the following example:
// -------- can assume this is located in 'tool.h' file --------------
// Fwd declaration support foo( const int& ) gets called as expected by both compilers
// void foo( const int& n );
template< typename T >
void foo( const T& n ) {
[Code] ....
What happens: I expected that by calling bar(1) compiler will notice both versions of foo() and call the best match, in this case foo(const int&). That is not the case.
Note that overloaded foo(const int&) is below bar(). It seems that at that point GCC does not see overloaded version, and happily calls template version. Visual studio on the other hand has no problem finding them both.
If I introduce a forward declaration of foo( const int& ) before bar(), both compilers call that version correctly. Unfortunately, that is not a solution for my problem here.
Template version is part of a library while overloaded is part of the user code. Both would be located in different (header) files and I would not like to impose #include order to the users or to be dependant on it.
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Mar 1, 2013
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using namespace std;
int welcome();
int main(){
welcome();
[Code] ....
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I have some problems with this code i keep getting the error C2601: local function definitions are illegal.
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#include<stdlib.h>
int col;
int row;
int i;
int count;
char Area[99][99];
[Code] .....
Errorerror C1075: end of file found before the left brace '{' at ...69
Error1error C2601: 'SetField' : local function definitions are illegal17
Error2error C2601: 'KillNieghbors' : local function definitions are illegal31
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MAIN.cpp
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[code].....
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Consider the following code:
Code:
template<class TYPE>
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}
If I declared that code in a header file I'd be able to call it with an int, float, double or whatever. But where does the actual code get instantiated? Is it effectively inlined?
What I'm wondering is if there'd ever be any scenario for putting such code in a DLL - e.g.
Code:
#ifdef BUILDING_MY_DLL
#define MY_DLL_API __declspec(dllexport)
#else
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#endif
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[Code] ......
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Code:
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[Code] .....
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Apr 10, 2013
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double getProbability(){
int rd = random();
int max = numeric_limits<int>::max();
double result = rd % max;
cout << "Probability: " << result << "
";
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}
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#include <GLFW/glfw3.h>
#include <cstdio>
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[Code] ....
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[Code] ......
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