Class expr

test/ft/di_bind.cpp:657–662

template <class TIf, class TImpl>
struct expr {
  template <class TInjector>
  TIf &operator()(const TInjector &injector) {
    return injector.template create<TImpl &>();
  }
};
test bind_to_function_via_interface_inject = [] {
  struct i {
    virtual ~i() = default;