Working with native types

Accessing C++ types

C++ types are available within the cpp namespace, but you must replace :: with .. For example, std::string becomes cpp/std.string. This also works for type aliases.

Complex literal types

For complex types like template instantiations, pointers to members, and so on, jank supports a C++ domain-specific language (DSL). This is available implicitly when in type position, but it can be explicitly requested by using the special #cpp tag. The documentation for this DSL is here.

Defining new types

There isn’t yet a way to define new types using jank’s syntax, but you can always drop to cpp/raw to either include headers or define some C++ types inline. Improved support for extending jank’s object model with JIT (just in time) compiled types will be coming soon.

(cpp/raw "struct person
          {
            std::string name;
          };")