If this macro is left undefined by the user, it has a default value of 5 (increasing this number might increase compilation time). When specified by the user, this macro must be a non-negative integer number.
If this macro is left undefined by the user, it has a default value of 5 (increasing this number might increase compilation time). When defined by the user, this macro must be an integer number greater or equal than 2 (because at least two distinct functions need to be specified in order to define an overload).
This function template creates and returns an overloaded_functionf1, f2, etc.
The function types are internally determined from the template parameter types so they do not need to be explicitly specified. Therefore, this function template usually has a more concise syntax when compared with overloaded_functionoverloaded_functionBOOST_AUTO (or C++11 auto) or when the overloaded function object is handled using a function template parameter, see the Tutorial section).
The maximum number of functions to overload is given by the BOOST_FUNCTIONAL_OVERLOADED_FUNCTION_CONFIG_OVERLOAD_MAX
This function object aggregates together calls to functions of all the specified function types F1, F2, etc. The specified function types must have distinct parameters from one another and they must be in the following format (which is the Boost.Function preferred syntax):
result_type (argument1_type, argumgnet2_type, ...)@@ -55,27 +55,27 @@
The maximum number of functions to overload is given by the BOOST_FUNCTIONAL_OVERLOADED_FUNCTION_CONFIG_OVERLOAD_MAX configuration macro. The maximum number of function parameters for each of the specified function types is given by the BOOST_FUNCTIONAL_OVERLOADED_FUNCTION_CONFIG_ARITY_MAX configuration macro.
See: Tutorial section, make_overloaded_function, BOOST_FUNCTIONAL_OVERLOADED_FUNCTION_CONFIG_OVERLOAD_MAX, BOOST_FUNCTIONAL_OVERLOADED_FUNCTION_CONFIG_ARITY_MAX, Boost.Function.
overloaded_function
public
construct/copy/destructoverloaded_function(const boost::function< F1 > &, +overloaded_function(const boost::function< F1 > &, const boost::function< F2 > &, ...);Construct the overloaded function object.Any function pointer, function reference, and monomorphic function object that can be converted to a
boost::functionfunction object can be specified as parameter.
overloaded_function public member functionsoverloaded_function public member functionsboost::function_traits< F1 >::result_type -operator()(typename boost::function_traits< F1 >::arg1_type, +operator()(typename boost::function_traits< F1 >::arg1_type, typename boost::function_traits< F1 >::arg2_type, ...) const;Call operator matching the signature of the function type specified as 1st template parameter.
This will in turn invoke the call operator of the 1st function passed to the constructor.
boost::function_traits< F2 >::result_type -operator()(typename boost::function_traits< F2 >::arg1_type, +operator()(typename boost::function_traits< F2 >::arg1_type, typename boost::function_traits< F2 >::arg2_type, ...) const;Call operator matching the signature of the function type specified as 2nd template parameter.
This will in turn invoke the call operator of the 2nd function passed to the constructor.
Note: Similar call operators are present for all specified function types F1, F2, etc (even if not exhaustively listed by this documentation).
Last revised: February 14, 2012 at 16:16:51 GMT |
+Last revised: February 17, 2012 at 20:42:39 GMT |