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SemiringBase Struct Template Reference
[Semiring]

SemiringBase is the base class for all structures that are semirings. More...

Inheritance diagram for SemiringBase:

Inheritance graph
[legend]
List of all members.

Public Types

typedef Self self_t
 Exact type of the most derivated type in the hierarchy.


Public Member Functions

template<class T> bool can_choose_non_starable (SELECTOR(T)) const
 Indicate wether it is possible or not to call choose_non_starable.

template<class T> Element< Self, T > choose_starable (SELECTOR(T)) const
 Return a randomly choosed starable semiring element.

template<class T> Element< Self, T > choose_non_starable (SELECTOR(T)) const
 Return a randomly choosed non-starable semiring element.

template<typename T> Element< Self, T > identity (SELECTOR(T)) const
 Returns the identity of the monoid (if mul_kind).

template<typename T> Element< Self, T > zero (SELECTOR(T)) const
 Returns the zero of the monoid (if add_kind).

bool contains (const Element< Self, T > &elt) const
 Check if a given element is compatible with the structural element.

bool contains (const Element< OtherS, T > &other) const
 Specialization of containts that always return false.

bool contains (const T &elt_value) const
 Check if an anonymous value is compatible with a structural element.

Element< Self, T > choose (SELECTOR(T)) const
 Choose randomly an element in the structure.

self_tself ()
 Accessor to the real type.


Protected Member Functions

 SemiringBase ()
 Default constructor is protected since it is an abstract class.

 SemiringBase (const SemiringBase &other)
 Copy constructor is protected since it is an abstract class.


Detailed Description

template<class Self>
struct vcsn::algebra::SemiringBase< Self >

SemiringBase is the base class for all structures that are semirings.


Member Function Documentation

bool can_choose_non_starable SELECTOR(T)   )  const
 

Indicate wether it is possible or not to call choose_non_starable.

There's no need for can_choose_starable, since Zero is always starable and therefor can be choosen.

bool contains const Element< OtherS, T > &  other  )  const [inherited]
 

Specialization of containts that always return false.

Indeed, elements structured by a particular type are always incompatible with structural elements of another type.

self_t& self  )  [inherited]
 

Accessor to the real type.

This accessor is intended to be used by implementations in this class and derivated structures to obtain a reference to the structural element with its most derivated type.


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