C++ template internals

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Template instantiation details of GCC and MS compilers

How does a C++ compiler facilitate template programming? I am interested in knowing the scheme that the compiler follows in template programming.
Also, what is/are the difference(s) between typename and class in terms of C++ template?

2. http://stackoverflow.com/questions/2023977/c-difference-of-keywords-typename-and-class-in-templates — Pubby, Nov 14 '11 at 06:08
Thx for pointing me out Pubby & Dmitry. Somehow I could not find a lead to that. — Samuzzal Choudhury, Nov 14 '11 at 06:25

score 1 · Answer 1 · answered Nov 14 '11 at 06:15

How does a C++ compiler facilitate template programming? I am interested in knowing the scheme that the compiler follows in template programming.

templates are actually kept by the compiler as some kind of macro, which is then expanded (the template parts are replaced with given values) upon specialization, applying constraint checking specified in the template.

score 0 · Answer 2 · edited May 23 '17 at 10:34

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Also, what is/are the difference(s) between typename and class in terms of C++ template?

No difference, except when you use template-template parameters:

 template <template <typename> class T>
 ...

cannot be replaced by

 template <template <typename> typename T>
 //                            ^^^^^^^^ wrong
 ...

More in Templates in c++,typename and class.

edited May 23 '17 at 10:34

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answered Nov 14 '11 at 07:17

kennytm

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C++ template internals

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