SemiringBase Struct Template Reference
[Algebra, Semiring]

Base class for all structures that are semirings. More...

Inheritance diagram for SemiringBase:

[legend]List of all members.

Public Types
typedef Self	self_t
	Exact type of the most derived type in the hierarchy.
Public Member Functions
template<class T>
bool	can_choose_non_starable (SELECTOR(T)) const
	Whether it is possible to call choose_non_starable.
template<class T>
Element< Self, T >	choose_starable (SELECTOR(T)) const
	A randomly chosen starable semiring element.
template<class T>
Element< Self, T >	choose_non_starable (SELECTOR(T)) const
	A randomly chosen 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 contains that always returns 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_t &	self ()
	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.

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Detailed Description

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

Base class for all structures that are semirings.

Definition at line 37 of file semiring_base.hh.

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Member Function Documentation

bool can_choose_non_starable (  SELECTOR(T)   )  const

Whether it is possible to call choose_non_starable. There's no need for can_choose_starable, since Zero is always starable and therefor can be choosen. Definition at line 45 of file semiring_base.hxx. References vcsn::op_can_choose_non_starable(), and SELECT.

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

Specialization of contains that always returns 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. To be used by implementations in this class and derived structures to obtain a reference to the structural element with its most derived type. Referenced by vcsn::op_contains(), vcsn::op_convert(), vcsn::op_in_mirror(), vcsn::op_letter_delta(), vcsn::op_letter_deltac(), vcsn::op_letter_deltaf(), vcsn::op_letter_rdelta(), vcsn::op_letter_rdeltac(), vcsn::op_letter_rdeltaf(), vcsn::op_rout(), vcsn::op_spontaneous_delta(), vcsn::op_spontaneous_deltac(), vcsn::op_spontaneous_deltaf(), vcsn::op_spontaneous_rdelta(), vcsn::op_spontaneous_rdeltac(), and vcsn::op_spontaneous_rdeltaf().

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