map with custon class

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Hi all,
I created a class as below

C++

class CPatUser : public CObject
{
public:
	CString Login;
	int NbrTentMax;
	int CurrNbrTent;

	CPatUser(CPatUser &X)
	{
		this->Login = X.Login
		this->CurrNbrTent = X.CurrNbrTent;
		this->NbrTentMax = X.NbrTentMax;
	};

	void CPatUser::operator =(CPatUser &X)
	{
		this->Login = X.Login;
		this->NbrTentMax = X.NbrTentMax;
		this->CurrNbrTent = 0;
	};
};
typedef CTypedPtrArray<CPtrArray, CPatUser*> CPatUserCAList;

and in some part of my application i try to insert into a map a new instance of the class :

C++

CPatUser* ThePartUser;
	if(LoginUsers.find(TheUser->UserName) ==  LoginUsers.end())
	{
		ThePartUser ->Login = Name;
		ThePartUser->NbrTentMax = TheUser->NbrTentMax;
		ThePartUser->CurrNbrTent = 0;
		<big>LoginUsers.insert(std::pair<CString, CPatUser>(Name, ThePartUser));</big>
	}

but when compiling i get this error :

<br />
error C2665: 'std::pair<_Ty1,_Ty2>::pair' : none of the 3 overloads could convert all the argument types

i think is related to some issue with a custom class such as copy constructor or sth lile that.

Any idea ?

Thank you.

Posted 23-Jan-12 23:30pm

Schehaider_Aymen

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CPallini · Accepted Answer · 2012-01-23T23:39:00

Solution 1

No surprise: your trying to make a std::pair< CString, CPatUser > with the couple (Name, ThePartUser) where the latter is a pointer to a CPatUser object. If you need to store pointers then you must use

C++

std::make_pair< CString, CPatUser *>(Name, ThePartUser);

[update]
Sorry there were naughty typos in formatting code. Either CP (as CodeProject) or CP (as Carlo Pallini) was drunk. They (the typos) should be fixed, now.
[/update]

Posted 23-Jan-12 23:39pm

CPallini

Updated 24-Jan-12 0:09am

v5

Comments

Schehaider_Aymen 24-Jan-12 5:51am

I did what you sai and i had this error :


error C2558: class 'CPatUser' : no copy constructor available or copy constructor is declared 'explicit'

i even add the word explicit word :


	explicit CPatUser(CPatUser &X)
	{
		this->Login = X.Login;
		this->CurrNbrTent = X.CurrNbrTent;
		this->NbrTentMax = X.NbrTentMax;
	};

Schehaider_Aymen 24-Jan-12 6:00am

Sorry I did not see the make_pair instead of pair :

i make it as below :


...
LoginUsers.insert(std::make_pair(<cstring,>(Name, ThePartUser *)));

and here the error (s)


 error C2143: syntax error : missing ')' before '<'
 error C2780: 'std::pair<_Ty1,_Ty2> std::make_pair(_Ty1,_Ty2)' : expects 2 arguments - 0 provided

Schehaider_Aymen 24-Jan-12 6:26am

Thank you Carlo Pallini, that works now.

map with custon class

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map with custon class

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