created eoOptional

This commit is contained in:
LPTK 2013-06-12 15:26:27 +02:00
commit 122b7442c1
2 changed files with 79 additions and 34 deletions

79
eo/src/eoOptional.h Normal file
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@ -0,0 +1,79 @@
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
/*
(c) Thales group, 2013
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation;
version 2 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact: http://eodev.sourceforge.net
Authors:
Lionel Parreaux <lionel.parreaux@gmail.com>
*/
/** @defgroup Logging Logging
* @ingroup Utilities
@{
*/
#ifndef _EOOPTIONAL_H
#define _EOOPTIONAL_H
#include <eoObject.h>
template< class T >
class eoOptional {
public:
static const eoOptional<T> null; // = eoOptional<T>();
eoOptional (T& init)
: _val(&init)
{ }
bool hasValue() const
{
return _val != NULL;
}
T& get () const
{
if (!hasValue())
throw std::runtime_error("Cannot get a reference from a eoOptional wrapper with no value");
return *_val;
}
protected:
eoOptional ()
: _val(NULL)
{ }
private:
T* _val;
};
template< class T >
const eoOptional<T> eoOptional<T>::null = eoOptional<T>();
#endif // _EOOPTIONAL_H
/** @} */

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@ -9,40 +9,6 @@
// TODO make tests
template< class T >
class eoOptional {
public:
static const eoOptional<T> null; // = eoOptional<T>();
eoOptional (T& init)
: _val(&init)
{ }
bool hasValue() const
{
return _val != NULL;
}
T& get () const
{
if (!hasValue())
throw std::runtime_error("Cannot get a reference from a eoOptional wrapper with no value");
return *_val;
}
protected:
eoOptional ()
: _val(NULL)
{ }
private:
T* _val;
};
template< class T >
const eoOptional<T> eoOptional<T>::null = eoOptional<T>();
template< class EOT, class Neighbor >
class moStdDevEstimator : public eoUF<EOT&, double>
{