Creating an array with templates

Hello,

I'm trying to create a temporary array inside a member function. It used to be restricted to an int type, but now I want to add templates to the class so what used to be:

Code:

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int *a = new int[size];

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Is changed to:

Code:

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T *a = new T [size];

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Is it possible to use this method for T? Or do I need to call the constructor here? I get this error message, which I think might be related to this, what do you think?

Code:

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error: expected initializer before ‘*’ token

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That should work, assuming that T has a default constructor. You might want to post the smallest and simplest program that demonstrates the compile error.

Oh, but then you should just write:

Code:

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std::vector<T> a(size);

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Hm, it's quite odd. I created a dummy function that does nothing more than creates the array and destroys it then prints the argument to the console. It works, I guess it might be one of those errors that is the result of a chain of other issues.

here is the function (BTW this is exactly how I use T in the constructor):

Code:

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                void dummy(T var){
                        T *arr = new T [123];
                        delete [] arr;
                        std::cout << var << std::endl;
                }

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Thanks

Another strange thing is if I move the declaration to the highest scope level in the function, it works but I get another error indicating that the type ' size_t[size_t]' isn't valid, eventhough T, in this case is a double.

Ok I got it working. Turns out that when I did the changes from int to T, I made some mistakes so:

Code:

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                                int offset,

                                arr = new T [size];

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At the top of the function was the problem. These declarations used to be on the same line previously, a comma is then just what is called for.