BOOST_OPENMETHOD_DEFAULT_REGISTRY

Default value for Registry.

Synopsis

Declared in <boost/openmethod/core.hpp>

#define BOOST_OPENMETHOD_DEFAULT_REGISTRY

Description

The name of the default registry.

BOOST_OPENMETHOD_DEFAULT_REGISTRY is the default value for the Registry template parameter of boost::openmethod::method, boost::openmethod::use_classes, boost::openmethod::virtual_ptr, and all the constructs that take a registry as a template argument.

BOOST_OPENMETHOD_DEFAULT_REGISTRY can be defined by a program to change the default registry globally, before including <boost/openmethod/core.hpp>. After that, changing its value has no effect, even on other macros.

To override the default registry, proceed as follows:

  • Define a boost::openmethod::registry class, either from scratch, or by tuning an existing registry. Include <boost/openmethod/preamble.hpp>, <boost/openmethod/default_registry.hpp>, and headers under boost/openmethod/policies as needed.

  • Set BOOST_OPENMETHOD_DEFAULT_REGISTRY to the new registry class.

  • Include <boost/openmethod/core.hpp>.

Use this feature with caution, as it will cause ODR violations if different translation units define different default registries.

See Also

Registries and Policies

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