friend-function

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How can I declare a friend function in a namespace that takes an inner class as a parameter?

Consider this code: namespace foo {} class A { class B { }; friend int foo::bar( B& ); }; namespace foo { int bar( A::B& )[详细]

2023-04-12 01:23 分类：问答
C++ operator overloading on templated class

I have a templated Stack class implemented internally with vector. Here is the content of my (simplified) TStack.h:[详细]

2023-04-10 18:21 分类：问答
C++0x, user-defined literals with friend operator ""()

Will it be possible and/or useful to define an operator \"\" (...) as a friend function? class Puzzle {[详细]

2023-04-03 21:35 分类：问答
How to resolve "class must be used when declaring a friend" error?

class two; class one { int a; public: one() { a = 8; } friend two; }; class two { public: two() { } two(one i) { cout << i.a;[详细]

2023-03-31 02:00 分类：问答
Creating a function that is a friend to multiple classes

In the code below, I am trying to create a function \"patient_count\" that is a friend to the classes \"horse\" , \"pig\" , and \"dog\". I can get the function to be a friend with 1 class but not to a[详细]

2023-03-16 16:05 分类：问答
Defining operator<< Inside Class

Consider the following code: class MyClass { template <typename Datatype> friend MyClass& operator<<(MyClass& MyClassReference, Datatype SomeData);[详细]

2023-02-14 07:10 分类：问答
does anything on the lines of friend function exist in java?

Hi I want to implement a method on the lines of friend function in C++. How can I go about it?If it does not, why java doesn\'t need it?Please suggest how to implement it.. as in a sample:[详细]

2023-02-06 07:44 分类：问答
Operator overloading : member function vs. non-member function?

I read that开发者_Python百科 an overloaded operator declared as member function is asymmetric because it can have only one parameter and the other parameter passed automatically is the this pointer. S[详细]

2023-02-03 04:08 分类：问答
ADL and friend injection

Consider this code: template <int N> struct X { friend void f(X *) {} }; int main() { f((X<0> *)0); // Error?[详细]

2023-01-14 01:24 分类：问答
Declaring "friend" functions fails under Visual Studio 2008

I am trying to declare a global function as a \"friend\" of a class: namespace first { namespace second {[详细]

2023-01-05 18:33 分类：问答