Quick question about class template

Hi@all

I wrote my own list class now I am supposed to convert it to a template class so I can use it for another program.

In my list I also have an iterator class which I implemented.

At the begining of .h file, I put

Code:

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template <typename Item>

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and I changed functions that I wrote for list class like for copy constructor

Code:

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list (const list<Item>& orginal)

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my question is do I need to change anything for iterator class? I have an example template class which doesn't have an iterator class in it so I am confused :confused:

thanks

Quote:

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template <typename Item>

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I think it's pretty standard to use "T" for the type parameter, i.e.:

template <typename T>

"Item" isn't too descriptive, and in fact it's probably misleading. "T" stands for type, and you are saying that wherever the "T" appears in your code, it will be a variable.

Quote:

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I wrote my own list class now I am supposed to convert it to a template class

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What type did you write it for? It's pretty simple to convert, you just replace that type with "T" wherever you want the type to be a variable.
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Suppose you declare a list like this:

list<int> myList;

If you want to declare an iterator for that list, you do this:

list<int>::iterator pos = myList.begin();

As you can see, the type of the things stored in the list is reflected in the iterator type as well: 'pos' is of type list<int>::iterator

Thanks 7stud

I understood everything but how about if I have a friend iterator class in my template class, I mean when I convert my class to a template class, do I have to change my iterator friend function?

for example; if I have my own stack class and It has a friend iterator class and I want to convert it to a template class, do I need to change iterator class too?

Code:

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template <typename T>
class Stack{
friend class iterator;
private:
.....
......
public:
//************************begin class iterator**************************
class iterator {
friend class Stack;
private:
.....
.....
public:
.....
.....
};
//************************end class iterator**************************
private:
.....
.....
public:
....
.....
};

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1)What type in your class do you want to vary?

2)Post how you would declare an iterator for your list class

Quote:

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Originally Posted by 7stud

1)What type in your class do you want to vary?

2)Post how you would declare an iterator for your list class

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Thanks for your help but I can not post my code because of some reasons.

If I knew how to convert my class to a template class, I would complete my program.

I didn't ask you to post your code. I asked you two simple questions. If you can't answer them, then you can't write templates.