# t00008 - Template and template template relationships
## Config
```yaml
compilation_database_dir: ..
output_directory: puml
diagrams:
  t00008_class:
    type: class
    glob:
      - ../../tests/t00008/t00008.cc
    using_namespace:
      - clanguml::t00008
    include:
      namespaces:
        - clanguml::t00008

```
## Source code
File t00008.cc
```cpp
#include <array>
#include <vector>

namespace clanguml {
namespace t00008 {

using CMP = bool (*)(const int, const int);

template <typename T, typename P = T, CMP = nullptr, int N = 3> class A {
public:
    T value;
    T *pointer;
    T &reference;
    std::vector<P> values;
    std::array<int, N> ints;

    CMP comparator;
};

template <typename T> struct Vector {
    std::vector<T> values;
};

template <typename T, template <typename> typename C> struct B {
    C<T> template_template;
};

struct D {
    B<int, Vector> ints;

    template <typename... Items> D(std::tuple<Items...> * /*items*/) { }

    void add(int i) { ints.template_template.values.push_back(i); }
};

struct E {
    template <typename ET> struct nested_template {
        using DT = ET;

        static DT *get(ET *d) { return d; }
    };
};

template <> struct E::nested_template<char> {
    using DeclType = char;

    static DeclType *getDecl(char *c) { return c; }
};

} // namespace t00008
} // namespace clanguml

```
## Generated UML diagrams
![t00008_class](./t00008_class.svg "Template and template template relationships")
## Generated JSON models
```json
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      "is_union": false,
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            "translation_unit": "../../tests/t00008/t00008.cc"
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            "line": 12,
            "translation_unit": "../../tests/t00008/t00008.cc"
          },
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            "line": 17,
            "translation_unit": "../../tests/t00008/t00008.cc"
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        {
          "default": "T",
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        },
        {
          "default": "nullptr",
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          "kind": "non_type_template",
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          "type": "CMP"
        },
        {
          "default": "3",
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          "name": "N",
          "template_parameters": [],
          "type": "int"
        }
      ],
      "type": "class"
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    {
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}
```