d-domain

Construction Constraints

using DefaultConstructibleType = di::BasicType<int, Optional>;
using ParamConstructibleType = di::BasicType<int, Required>;

Note| By default Optional is used di::BasicType<int> == di::BasicType<int, Optional>

Injecting Code Using Mixins

BasicType does not offer much functionality apart from providing a simple value container. In order to get more from a single BasicType it is possible to use Mixins.

struct Name
{
  static const char* name() { return "SomeName"; }
};
using StaticallyNamedType = di::BasicType<int, Mixin<Name>>;
assert(std::string("SomeName") == StaticallyNamedType::name());
assert(std::string("SomeName") == StaticallyNamedType(20).name());

Unique Types With Same Signature

In order to define two different types with same signature (T1 != T2), it is possible to use a dummy Mixin type.

struct Type1Tag{}; using T1 = di::BasicType<int, Mixin<T1Tag>>;
struct Type2Tag{}; using T2 = di::BasicType<int, Mixin<T2Tag>>;
static_assert(!std::is_same<T1,T2>::value, "");

License

Copyright Adam Lach 2016. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).