libevocosm::organism< Genotype > Class Template Reference

An evolving organism. More...

#include <organism.h>

Inheritance diagram for libevocosm::organism< Genotype >:

List of all members.

Public Member Functions

• organism ()

  Creation constructor.
  

• organism (const Genotype &a_genes)

  Value constructor.
  

• organism (const organism &a_source)

  Copy constructor.
  

• virtual ~organism ()

  Virtual destructor.
  

• organism & operator= (const organism &a_source)

  assignment operator
  

• organism & operator= (const Genotype &a_genes)

  assignment operator
  

• virtual bool operator< (const organism &a_right) const

  Comparison operator for algorithms.
  

• virtual void reset ()

  Resets an object to it's initial state.
  

Public Attributes

• double fitness
• Genotype genes

---

Detailed Description

template<typename Genotype>
class libevocosm::organism< Genotype >

An organism is a solution to a problem posed by a fitness landscape; it has "genes" that define its behavior, and a fitness value assigned during fitness testing.

Evocosm provides the freedom to define organisms as anything: bit strings, floating-point numbers, finite state machines, LISP programs, or external robots controlled via radio waves.

Parameters:

Genotype

- The type of genes for this organism class

---

Constructor & Destructor Documentation

template<typename Genotype>

libevocosm::organism< Genotype >::organism

(

)

[inline]

Creates a new organism, with default genes and zero fitness.

template<typename Genotype>

libevocosm::organism< Genotype >::organism

(

const Genotype &

a_genes

)

[inline]

Creates a new organism with specific genes.

Parameters:

a_genes

- Gene value for the new organism

template<typename Genotype>

libevocosm::organism< Genotype >::organism

(

const organism< Genotype > &

a_source

)

[inline]

Creates a new object identical to an existing one.

Parameters:

a_source

- The source object

template<typename Genotype>

virtual libevocosm::organism< Genotype >::~organism

(

)

[inline, virtual]

A virtual destructor. By default, it does nothing; this is a placeholder that identifies this class as a potential base, ensuring that objects of a derived class will have their destructors called if they are destroyed through a base-class pointer.

---

Member Function Documentation

template<typename Genotype>

virtual bool libevocosm::organism< Genotype >::operator<

(

const organism< Genotype > &

a_right

)

const [inline, virtual]

Many Standard C++ algorithms require a "less than" comparison operator for container elements.

Parameters:

a_right

- Right hand argument for less than operator

template<typename Genotype>

organism& libevocosm::organism< Genotype >::operator=

(

const organism< Genotype > &

a_source

)

[inline]

Assigns an existing object the state of another.

Parameters:

a_source

- The source object

Returns:

A reference to this

template<typename Genotype>

organism& libevocosm::organism< Genotype >::operator=

(

const Genotype &

a_genes

)

[inline]

Assigns an existing object the state of another.

Parameters:

a_genes

- The source object

Returns:

A reference to this

template<typename Genotype>

virtual void libevocosm::organism< Genotype >::reset

(

)

[inline, virtual]

Resets all data in an organisim to the initial (or startup) state, including setting the fitness to zero. Derived classes should override this method to "clear" any data.

---

Member Data Documentation

template<typename Genotype>

double libevocosm::organism< Genotype >::fitness

Fitness is assigned by the landscape in which an organism is tested. A scaler object may alter fitness values after testing; a selector uses fitness to determine which organisms survive from one generation to the next, and a reproducer creates new organisms from parents selected by fitness.

Referenced by libevocosm::organism< vector< double > >::operator<(), libevocosm::organism< vector< double > >::operator=(), libevocosm::organism< vector< double > >::reset(), and libevocosm::function_landscape::test().

template<typename Genotype>

Genotype libevocosm::organism< Genotype >::genes

Genes define an organism's behavior in a fitness landscape. An initial population usually (but not always) contains organisms with random genes; a landscape tests the behavior defined by genes to calculate the fitness of an organism. A reproducer will create children from the genes of their parents, and a mutator may make random changes in those genes.

Referenced by libevocosm::organism< vector< double > >::operator=(), and libevocosm::function_landscape::test().

---

The documentation for this class was generated from the following file:

• organism.h