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What is the difference between a template class and a class template?
Started by coder on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
This is a common point of confusion for many (including as C++ is... .
A template class is related to the Template Method design pattern , while class template is just a "fill-in-the-blanks" class template.
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Does anyone know the syntax for an out-of-declaration template method in a template class.
for instance:
template<class TYPE> class thing { public : void do_very_little(); template<class INNER_TYPE> INNER_TYPE do_stuff(); };
The first method...
Started by Simon Parker on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Template<class TYPE> template<class INNER_TYPE>.
Template<class TYPE> template<class INNER_TYPE> INNER_TYPE thing<TYPE>::do_stuff() { return INNER_TYPE(); }
Try this.
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Be forewarned: This question seems way more obvious than it actually is.
I'd like to write a template that can accept any concrete class or template class as a template parameter. This might seem useless because without knowing whether the passed in T...
Started by Joseph Garvin on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
This mean that this will work:
template <class T> int f it work, like using;
template <class T> foo { }; typedef foo< int_<4> > my_foo_4 of problems; a class....
Global scope after which they are used.
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This doesn't compile:
template<class X> struct A { template<int I> void f() {} }; template<class T> void g() { A<T> a; a.f<3>(); // Compilation fails here (Line 18) } int main(int argc, char *argv[]) { g<int>(); // ...
Started by Ari on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Try the following code:
template<class T> void g() { A<T> a; a.template f<3>(); // add `template` keyword here }
According to C++'03 Standard 14.2/4:
When the name ....
Ready for compiler error saying that T is undefined.
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Hello, noob here still experimenting with templates. Trying to write a message processing class template
template <typename T> class MessageProcessor { //constructor, destructor defined //Code using t_ and other functions foo( void ) { //More code...
Answer Snippets (Read the full thread at stackoverflow):
To use the keyword 'template' when you use member templates in dependent expressions (expressions whose meanings rely directly or indirectly on a generic template parameter)
t_->template this example will help you appreciate....
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Hello everybody. I have been trying to implement my own linked list class for didactic purposes.
I specified the "List" class as friend inside the Iterator declaration, but it doesn't seem to compile.
These are the interfaces of the 3 classes I've used...
Started by Dave Danuve on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Instead, nest the Iterator class inside List (automagically....
};
try adding a forward declaration
template <class T> class List;
at the start of Iterator.hThe problem is List has not been properly declared in Iterator.h.
}; //...
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Consider:
template <typename T> class Base { public: static const bool ZEROFILL = true; static const bool NO_ZEROFILL = false; } template <typename T> class Derived : public Base<T> { public: Derived( bool initZero = NO_ZEROFILL ); /...
Started by cheshirekow on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
14.6.2/3 has:
In the definition of a class template or a member of a class template, if a base class of the class template depends on a template-parameter of ....
Is simply an undeclared identifier.
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If I have one template class and template function like this
template <class T> T getMax (T a, T b) { return (a>b?a:b); } template <class T> class GetMax { public: static T getMax(T a, T b) { return (a>b?a:b); } };
Why are these not ...
Started by skydoor on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
2) Yes, template arguments are inferred only for function templates, not classWhat should....
It would work if you stated it :
class GetMax { public: template <class T> static T getMax(T a, T; or getMax<char> .
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I have a templated class with a method for which I need a different implementation for a specific template type. How do i get it done?
Started by rayimag on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
If you want to specialize a particular method in the class without re { }; template<typename T&....
The class as a whole, meaning that the compiler won't automatically copy the member functions from the base type to the specialized type.
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If I have a non-template (i.e. "normal") class and wish to have a template friend function, how do I write it without causing a compiler error? Here is an example to illustrate what I am trying to do:
template <class T> void bar(T* ptr); class MyClass...
Started by Brian on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Works fine for me:
#include <iostream> template <class T> void bar(T* ptr); class MyClass // note that this isn't a template class { private: void foo(); template <class T> friend void....
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