fix_optional< T > Class Template Reference

Make fixed-size objects optional, using a boolean flag for "null/nil/None" values. More...

#include <fix_optional.hxx>

Public Types
typedef T	value_type
	Value objects type.

Public Member Functions
	fix_optional (const value_type &defval)
	constructor with default value for the data
	fix_optional ()
	constructor without default value for the data
	fix_optional (const fix_optional< T > &other)
	copy constructor; copies the data
template<typename D>
	fix_optional (const D &defval)
	copy constructor with a conversion to value
template<class InputIt>
	fix_optional (InputIt first, InputIt last)
	construct from iterators
fix_optional< T > &	operator= (const fix_optional< T > &other)
	assignment operator
fix_optional< T > &	operator= (const T &val)
	assignment operator, to value type
template<typename D>
fix_optional< T > &	operator= (const D &val)
	Assignment operator, with conversion to value.
bool	operator== (const fix_optional< T > &other) const
	equality test
bool	operator!= (const fix_optional< T > &other) const
	inequality test

Public Attributes
bool	valid
	Object is valid, filled, non-null.
value_type	value
	Encapsulated value.

Static Public Attributes
static constexpr const char *	classname = "fix_optional"
	Name.

Detailed Description

template<typename T>
class fix_optional< T >

Make fixed-size objects optional, using a boolean flag for "null/nil/None" values.

Template Parameters

T

Datatype.

Constructor & Destructor Documentation

fix_optional()

template<typename T>

fix_optional< T >::fix_optional ( const value_type & defval )

inline

constructor with default value for the data

Parameters

defval

default fill value

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

• /home/abuild/rpmbuild/BUILD/dueca-4.2.8-build/dueca-4.2.8/dueca/fix_optional.hxx