libsigc++
2.99.5
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Functors are copyable types that define operator()(). More...
Modules | |
Slots | |
Slots are type-safe representations of callback methods and functions. | |
mem_fun() | |
mem_fun() Creates a functor from a pointer to a method. | |
ptr_fun() | |
ptr_fun() creates a functor from a pointer to a function. | |
Classes | |
struct | sigc::functor_trait< T_functor > |
Trait that specifies the appropriate functor type of any callable type. More... | |
struct | sigc::visitor< T_functor > |
sigc::visitor<T_functor>::do_visit_each() performs a functor on each of the targets of a functor. More... | |
Functions | |
template<class T_action , class T_functor > | |
void | sigc::visit_each (const T_action& _A_action, const T_functor& _A_functor) |
This function performs a functor on each of the targets of a functor. More... | |
template<class T_type , class T_action , class T_functor > | |
void | sigc::visit_each_type (const T_action& _A_action, const T_functor& _A_functor) |
This function performs a functor on each of the targets of a functor limited to a restricted type. More... | |
Functors are copyable types that define operator()().
Types that define operator()() overloads with different return types are referred to as multi-type functors. Multi-type functors are only partially supported in libsigc++.
Closures are functors that store all information needed to invoke a callback from operator()().
Adaptors are functors that alter the signature of a functor's operator()().
libsigc++ defines numerous functors, closures and adaptors. Since libsigc++ is a callback library, most functors are also closures. The documentation doesn't distinguish between functors and closures.
The basic functor types libsigc++ provides are created with ptr_fun() and mem_fun() and can be converted into slots implicitly. The set of adaptors that ships with libsigc++ is documented in the Adaptors module.
void sigc::visit_each | ( | const T_action & | _A_action, |
const T_functor & | _A_functor | ||
) |
This function performs a functor on each of the targets of a functor.
void sigc::visit_each_type | ( | const T_action & | _A_action, |
const T_functor & | _A_functor | ||
) |
This function performs a functor on each of the targets of a functor limited to a restricted type.