TCLAP::VALUE_ARG_HELPER::ValueExtractor< T > Class Template Reference

This class is used to extract a value from an argument. More...

#include <ValueArg.h>

Collaboration diagram for TCLAP::VALUE_ARG_HELPER::ValueExtractor< T >:

[legend]List of all members.

Private Member Functions
	ValueExtractor (T &value)
	Constructor.
int	extractValue (const std::string &val)
	Method that will attempt to parse the input stream for a value of type T.
Private Attributes
T &	_value
	Reference to the value where the result of the extraction will be put.
Friends
class	ValueArg< T >

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Detailed Description

template<class T>
class TCLAP::VALUE_ARG_HELPER::ValueExtractor< T >

This class is used to extract a value from an argument.

It is used because we need a special implementation to deal with std::string and making a specialiced function puts it in the T segment, thus generating link errors. Having a specialiced class makes the symbols weak. This is not pretty but I don't know how to make it work any other way.

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Constructor & Destructor Documentation

template<class T>

TCLAP::VALUE_ARG_HELPER::ValueExtractor< T >::ValueExtractor

(

T &

value

)

[inline, private]

Constructor.

Parameters:

value

- Where the value extracted will be put.

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Member Function Documentation

template<class T>

int TCLAP::VALUE_ARG_HELPER::ValueExtractor< T >::extractValue

(

const std::string &

val

)

[inline, private]

Method that will attempt to parse the input stream for a value of type T.

Parameters:

val

- Where the value parsed will be put.

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Friends And Related Function Documentation

template<class T>

friend class ValueArg< T > [friend]

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Member Data Documentation

template<class T>

T& TCLAP::VALUE_ARG_HELPER::ValueExtractor< T >::_value [private]

Reference to the value where the result of the extraction will be put.

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

• tclap/ValueArg.h

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