1

suppose I have a template class

template<typename T>
struct Foo { 
    struct Bar; 
};

specializing Foo<int>::Bar

template<>
struct Foo<int>::Bar {
    struct Private; // I want to implement this in .cc for its compile unit use only
}

to implement Private in .cc file

// template<>
struct Foo<int>::Bar::Private {...};

without template<>, it shows "too few template-parameter-lists",

with template<>, it shows explicit specialization of non-template Foo<int>::Bar::Private I also tried alias Foo<int> and it doesn't work either.

is it possible to implement Private separated from its declaration?

Improve this question
7
  • Implement template in a new local header file Commented Jan 9 at 8:45
  • it shows "too few template-parameter-lists" Cannot reproduce. Commented Jan 9 at 9:08
  • @n.m.couldbeanAI: msvc complains without Demo and others with Demo Commented Jan 9 at 9:12
  • And so, with conditiona MACRO, it "works" Demo. Commented Jan 9 at 9:15
  • 1
    Hmm looks like an MSVC bug for me. Bar is a member of a template one can specialize. Private is not a member of a template so there is nothing to specialize. Commented Jan 9 at 9:30
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