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	<html><!-- Created using the cpp_pretty_printer from the dlib C++ library. See http://dlib.net for updates. --><head><title>dlib C++ Library - any_trainer_abstract.h</title></head><body bgcolor='white'><pre>
	<font color='#009900'>// Copyright (C) 2010 Davis E. King ([email protected])
	</font><font color='#009900'>// License: Boost Software License See LICENSE.txt for the full license.
	</font><font color='#0000FF'>#undef</font> DLIB_AnY_TRAINER_ABSTRACT_H_
	<font color='#0000FF'>#ifdef</font> DLIB_AnY_TRAINER_ABSTRACT_H_

	<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='any_abstract.h.html'>any_abstract.h</a>"
	<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../algs.h.html'>../algs.h</a>"
	<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='any_decision_function_abstract.h.html'>any_decision_function_abstract.h</a>"
	<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>vector<font color='#5555FF'>></font>

	<font color='#0000FF'>namespace</font> dlib
	<b>{</b>

	<font color='#009900'>// ----------------------------------------------------------------------------------------
	</font>
	<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
	<font color='#0000FF'>typename</font> sample_type_,
	<font color='#0000FF'>typename</font> scalar_type_ <font color='#5555FF'>=</font> <font color='#0000FF'><u>double</u></font>
	<font color='#5555FF'>></font>
	<font color='#0000FF'>class</font> <b><a name='any_trainer'></a>any_trainer</b>
	<b>{</b>
	<font color='#009900'>/*!
	INITIAL VALUE
	- is_empty() == true
	- for all T: contains<T>() == false

	WHAT THIS OBJECT REPRESENTS
	This object is a version of dlib::any that is restricted to containing
	elements which are some kind of object with a .train() method compatible
	with the following signature:

	decision_function train(
	const std::vector<sample_type>& samples,
	const std::vector<scalar_type>& labels
	) const

	Where decision_function is a type capable of being stored in an
	any_decision_function<sample_type,scalar_type> object.

	any_trainer is intended to be used to contain objects such as the svm_nu_trainer
	and other similar types which represent supervised machine learning algorithms.
	It allows you to write code which contains and processes these trainer objects
	without needing to know the specific types of trainer objects used.
	!*/</font>

	<font color='#0000FF'>public</font>:

	<font color='#0000FF'>typedef</font> sample_type_ sample_type;
	<font color='#0000FF'>typedef</font> scalar_type_ scalar_type;
	<font color='#0000FF'>typedef</font> default_memory_manager mem_manager_type;
	<font color='#0000FF'>typedef</font> any_decision_function<font color='#5555FF'><</font>sample_type, scalar_type<font color='#5555FF'>></font> trained_function_type;

	<b><a name='any_trainer'></a>any_trainer</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- this object is properly initialized
	!*/</font>

	<b><a name='any_trainer'></a>any_trainer</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> any_trainer<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- copies the state of item into *this.
	- Note that *this and item will contain independent copies of the
	contents of item. That is, this function performs a deep
	copy and therefore does not result in *this containing
	any kind of reference to item.
	!*/</font>

	<font color='#0000FF'>template</font> <font color='#5555FF'><</font> <font color='#0000FF'>typename</font> T <font color='#5555FF'>></font>
	<b><a name='any_trainer'></a>any_trainer</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #contains<T>() == true
	- #cast_to<T>() == item
	(i.e. a copy of item will be stored in *this)
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='clear'></a>clear</b> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #*this will have its default value. I.e. #is_empty() == true
	!*/</font>

	<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
	<font color='#0000FF'><u>bool</u></font> <b><a name='contains'></a>contains</b> <font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
	<font color='#009900'>/*!
	ensures
	- if (this object currently contains an object of type T) then
	- returns true
	- else
	- returns false
	!*/</font>

	<font color='#0000FF'><u>bool</u></font> <b><a name='is_empty'></a>is_empty</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
	<font color='#009900'>/*!
	ensures
	- if (this object contains any kind of object) then
	- returns false
	- else
	- returns true
	!*/</font>

	trained_function_type <b><a name='train'></a>train</b> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>sample_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> samples,
	<font color='#0000FF'>const</font> std::vector<font color='#5555FF'><</font>scalar_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> labels
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>
	<font color='#009900'>/*!
	requires
	- is_empty() == false
	ensures
	- Let TRAINER denote the object contained within *this. Then
	this function performs:
	return TRAINER.train(samples, labels)
	!*/</font>

	<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
	T<font color='#5555FF'>&</font> <b><a name='cast_to'></a>cast_to</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- if (contains<T>() == true) then
	- returns a non-const reference to the object contained within *this
	- else
	- throws bad_any_cast
	!*/</font>

	<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
	<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='cast_to'></a>cast_to</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;
	<font color='#009900'>/*!
	ensures
	- if (contains<T>() == true) then
	- returns a const reference to the object contained within *this
	- else
	- throws bad_any_cast
	!*/</font>

	<font color='#0000FF'>template</font> <font color='#5555FF'><</font><font color='#0000FF'>typename</font> T<font color='#5555FF'>></font>
	T<font color='#5555FF'>&</font> <b><a name='get'></a>get</b><font face='Lucida Console'>(</font>
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- #is_empty() == false
	- #contains<T>() == true
	- if (contains<T>() == true)
	- returns a non-const reference to the object contained in *this.
	- else
	- Constructs an object of type T inside *this
	- Any previous object stored in this any_trainer object is destructed and its
	state is lost.
	- returns a non-const reference to the newly created T object.
	!*/</font>

	any_trainer<font color='#5555FF'>&</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font> <font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> any_trainer<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- copies the state of item into *this.
	- Note that *this and item will contain independent copies of the
	contents of item. That is, this function performs a deep
	copy and therefore does not result in *this containing
	any kind of reference to item.
	!*/</font>

	<font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
	any_trainer<font color='#5555FF'>&</font> item
	<font face='Lucida Console'>)</font>;
	<font color='#009900'>/*!
	ensures
	- swaps *this and item
	!*/</font>

	<b>}</b>;

	<font color='#009900'>// ----------------------------------------------------------------------------------------
	</font>
	<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
	<font color='#0000FF'>typename</font> sample_type,
	<font color='#0000FF'>typename</font> scalar_type
	<font color='#5555FF'>></font>
	<font color='#0000FF'>inline</font> <font color='#0000FF'><u>void</u></font> <b><a name='swap'></a>swap</b> <font face='Lucida Console'>(</font>
	any_trainer<font color='#5555FF'><</font>sample_type,scalar_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a,
	any_trainer<font color='#5555FF'><</font>sample_type,scalar_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> b
	<font face='Lucida Console'>)</font> <b>{</b> a.<font color='#BB00BB'>swap</font><font face='Lucida Console'>(</font>b<font face='Lucida Console'>)</font>; <b>}</b>
	<font color='#009900'>/*!
	provides a global swap function
	!*/</font>

	<font color='#009900'>// ----------------------------------------------------------------------------------------
	</font>
	<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
	<font color='#0000FF'>typename</font> T,
	<font color='#0000FF'>typename</font> sample_type,
	<font color='#0000FF'>typename</font> scalar_type
	<font color='#5555FF'>></font>
	T<font color='#5555FF'>&</font> <b><a name='any_cast'></a>any_cast</b><font face='Lucida Console'>(</font>
	any_trainer<font color='#5555FF'><</font>sample_type,scalar_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a
	<font face='Lucida Console'>)</font> <b>{</b> <font color='#0000FF'>return</font> a.cast_to<font color='#5555FF'><</font>T<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; <b>}</b>
	<font color='#009900'>/*!
	ensures
	- returns a.cast_to<T>()
	!*/</font>

	<font color='#009900'>// ----------------------------------------------------------------------------------------
	</font>
	<font color='#0000FF'>template</font> <font color='#5555FF'><</font>
	<font color='#0000FF'>typename</font> T,
	<font color='#0000FF'>typename</font> sample_type,
	<font color='#0000FF'>typename</font> scalar_type
	<font color='#5555FF'>></font>
	<font color='#0000FF'>const</font> T<font color='#5555FF'>&</font> <b><a name='any_cast'></a>any_cast</b><font face='Lucida Console'>(</font>
	<font color='#0000FF'>const</font> any_trainer<font color='#5555FF'><</font>sample_type,scalar_type<font color='#5555FF'>></font><font color='#5555FF'>&</font> a
	<font face='Lucida Console'>)</font> <b>{</b> <font color='#0000FF'>return</font> a.cast_to<font color='#5555FF'><</font>T<font color='#5555FF'>></font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font>; <b>}</b>
	<font color='#009900'>/*!
	ensures
	- returns a.cast_to<T>()
	!*/</font>

	<font color='#009900'>// ----------------------------------------------------------------------------------------
	</font>
	<b>}</b>

	<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_AnY_TRAINER_ABSTRACT_H_
	</font>


	</pre></body></html>