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Macro BOOST_TTI_HAS_FUNCTION

BOOST_TTI_HAS_FUNCTION — Expands to a metafunction which tests whether a member function or a static member function with a particular name and signature exists.

Synopsis

// In header: <boost/tti/has_function.hpp>

BOOST_TTI_HAS_FUNCTION(name)

Description

name = the name of the inner member.

generates a metafunction called "has_function_name" where 'name' is the macro parameter. template<class BOOST_TTI_TP_T,class BOOST_TTI_TP_R,class BOOST_TTI_TP_FS,class BOOST_TTI_TP_TAG> struct trait { static const value = unspecified; typedef mpl::bool_<true-or-false> type; }; The metafunction types and return: BOOST_TTI_TP_T = the enclosing type in which to look for our 'name'. BOOST_TTI_TP_R = the return type of the function BOOST_TTI_TP_FS = (optional) the parameters of the function as a boost::mpl forward sequence if function parameters are not empty. BOOST_TTI_TP_TAG = (optional) a boost::function_types tag to apply to the function if the need for a tag exists. returns = 'value' is true if the 'name' exists, with the appropriate function type, otherwise 'value' is false.


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