Forward declaration. More...

Public Types
typedef T	ValueType
	An alias for a type of the value represented by this class. More...

Public Member Functions
	Nullable ()
	Constructs an instance that represents null-value. More...

	Nullable (std::nullptr_t)
	Constructs an instance that represents null. More...

template<typename T1 >
	Nullable (const T1 &value)

template<typename T1 >
	Nullable (const Nullable< T1 > &value)

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>>
Nullable< T >	operator= (std::nullptr_t)

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value &&!std::is_null_pointer< T1 >::value, Nullable< T > & >::type	operator= (const T1 &x)

template<typename T1 >
Nullable< T > &	operator= (const Nullable< T1 > &x)

T	get_Value () const

bool	get_HasValue () const

	operator const T & () const

void	reset ()
	Sets the currently represented value to null. More...

bool	IsNull () const

template<typename T1 >
bool	NullableBoolHelper (const T1 &other, const std::function< bool()> &f, bool default_if_both_are_null=false) const

bool	operator== (std::nullptr_t) const

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator== (const T1 &other) const

template<typename T1 >
bool	operator== (const Nullable< T1 > &other) const

template<typename T1 >
std::enable_if< IsNullable< T1 >::value, bool >::type	Equals (const T1 &other) const

bool	operator!= (std::nullptr_t) const

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator!= (const T1 &other) const

template<typename T1 >
bool	operator!= (const Nullable< T1 > &other) const

bool	operator> (std::nullptr_t) const
	Always returns false. More...

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator> (const T1 &other) const

template<typename T1 >
bool	operator> (const Nullable< T1 > &other) const

bool	operator< (std::nullptr_t) const
	Always returns false. More...

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator< (const T1 &other) const

template<typename T1 >
bool	operator< (const Nullable< T1 > &other) const

bool	operator>= (std::nullptr_t) const

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator>= (const T1 &other) const

template<typename T1 >
bool	operator>= (const Nullable< T1 > &other) const

bool	operator<= (std::nullptr_t) const
	Always returns false. More...

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, bool >::type	operator<= (const T1 &other) const

template<typename T1 >
bool	operator<= (const Nullable< T1 > &other) const

Nullable< T >	operator+ (std::nullptr_t) const
	Returns a default constructed instance of Nullable<T> class. More...

template<typename T1 , typename = typename std::enable_if<!IsNullable<T1>::value, int>::type>
auto	operator+ (const T1 &other) const -> Nullable< decltype(get_Value()+other)>

template<typename T1 >
auto	operator+ (const Nullable< T1 > &other) const -> System::Nullable< decltype(get_Value()+other.get_Value())>

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>::type>
Nullable< T >	operator- (T1) const

template<typename T1 , typename = typename std::enable_if<!IsNullable<T1>::value, int>::type>
auto	operator- (const T1 &other) const -> Nullable< decltype(get_Value() - other)>

template<typename T1 >
auto	operator- (const Nullable< T1 > &other) const -> System::Nullable< decltype(get_Value() - other.get_Value())>

Nullable< T >	operator+= (std::nullptr_t)

template<typename T1 >
std::enable_if<!IsNullable< T1 >::value, Nullable< T > >::type	operator+= (const T1 &other)

template<typename T1 >
Nullable< T >	operator+= (const Nullable< T1 > &other)

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>::type>
Nullable< T >	operator-= (T1)
	Returns an instance of Nullable class that represents a null-value. More...

template<typename T1 , typename = typename std::enable_if<!std::is_null_pointer<T1>::value, T1>::type>
std::enable_if<!IsNullable< T1 >::value, Nullable< T > >::type	operator-= (const T1 &other)

template<typename T1 = T>
std::enable_if< std::is_same< T1, bool >::value, Nullable< T > >::type	operator\|= (bool other)

template<typename T1 = T>
std::enable_if< std::is_same< T1, bool >::value, Nullable< T > >::type	operator &= (bool other)

template<typename T1 >
Nullable< T >	operator-= (const Nullable< T1 > &other)

int	GetHashCode () const
	Returns a hash code for the current object. More...

String	ToString () const

T	GetValueOrDefault (T default_value)

T	GetValueOrDefault ()

Detailed Description

template<typename T>
class System::Nullable< T >

Forward declaration.

Represents a value of the specified type that can be assigned null. This type should be allocated on stack and passed to functions by value or by reference. Never use System::SmartPtr class to manage objects of this type.

Template Parameters

T

The underlying value type which is extended by the Nullable class

   #include "system/nullable.h"
   #include <iostream>
  
   int main()
   {
     using NullableInt = System::Nullable<int>;
  
     // Create a lambda function that is used to print a value.
     const auto printLambda = [](const NullableInt &nullable) -> void
     {
       if (nullable.get_HasValue())
       {
         std::cout << nullable.get_Value() << std::endl;
       }
       else
       {
         std::cout << "null" << std::endl;
       }
     };
  
     // Create an instance of Nullable that doesn't contain any value and try to print it using the created lambda.
     NullableInt nullable;
     printLambda(nullable);
  
     // Assign the value to the instance of Nullable and print it using the created lambda.
     nullable = 15;
     printLambda(nullable);
  
     return 0;
   }
   /*
*  This code example produces the following output:
*  null
*  15
   */

Member Typedef Documentation

◆ ValueType

template<typename T>

typedef T System::Nullable< T >::ValueType

An alias for a type of the value represented by this class.

Constructor & Destructor Documentation

◆ Nullable() [1/4]

template<typename T>

System::Nullable< T >::Nullable ( )

inline

Constructs an instance that represents null-value.

◆ Nullable() [2/4]

template<typename T>

System::Nullable< T >::Nullable ( std::nullptr_t )

inline

Constructs an instance that represents null.

◆ Nullable() [3/4]

template<typename T>

template<typename T1 >

System::Nullable< T >::Nullable ( const T1 & value )

inline

Constructs an instance of Nullable class that represents the specified value converted (if necessary) to the value of the underlying type T.

Parameters

value A constant reference to the value to be represented by the newly constructed Nullable object

Template Parameters

T1	The type of the specified value

◆ Nullable() [4/4]

template<typename T>

template<typename T1 >

System::Nullable< T >::Nullable ( const Nullable< T1 > & value )

inline

Constructs an instance that represents a value that is represented by the specified Nullable object. The specified nullable object may represent a value of different type than the underlying type of the constructed instance in which case the represented value is converted to a value of type T.

Template Parameters

T1	The type of the value represented by the specified Nullable object

Member Function Documentation

◆ Equals()

template<typename T>

template<typename T1 >

std::enable_if<IsNullable<T1>::value, bool>::type System::Nullable< T >::Equals ( const T1 & other ) const

inline

Determines if the value represented by the current object is equal to the value represented by the specified Nullable object.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is equal to the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ get_HasValue()

template<typename T>

bool System::Nullable< T >::get_HasValue ( ) const

inline

Determines whether the current object represents any value.

Returns: True if the current object represents a value, otherwise - false

◆ get_Value()

template<typename T>

T System::Nullable< T >::get_Value ( ) const

inline

Returns a copy of the value represented by the current object.

Returns: The value represented by the current object

Exceptions

InvalidOperationException If the current object does not represent any value

◆ GetHashCode()

template<typename T>

int System::Nullable< T >::GetHashCode ( ) const

inline

Returns a hash code for the current object.

◆ GetValueOrDefault() [1/2]

template<typename T>

T System::Nullable< T >::GetValueOrDefault ( T default_value )

inline

Returns the value represented by the current object or the specified value if the value represented by the current object is null.

Parameters

default_value The value returned by the method if the value represented by the current object is null

Returns: A copy of the value represented by the current object is it is not null, otherwise the specified value is returned

◆ GetValueOrDefault() [2/2]

template<typename T>

T System::Nullable< T >::GetValueOrDefault ( )

inline

◆ IsNull()

template<typename T>

bool System::Nullable< T >::IsNull ( ) const

inline

Determines if the current object represents a null-value.

Returns: True if the current object represents a null-value, otherwise - false

◆ NullableBoolHelper()

template<typename T>

template<typename T1 >

bool System::Nullable< T >::NullableBoolHelper	(	const T1 &	other,
		const std::function< bool()> &	f,
		bool	default_if_both_are_null = `false`
	)		const

inline

Helper function to check if this and other are both not nulls and call a lambda if so. Used in implementation.s

Template Parameters

T1	Other nullable type.

Parameters

other	Other nullable value to compare to.
f	Lambda to call if both `this` and `other` are not nulls.
default_if_both_are_null	Return value if both values are nulls.

Returns: false if either this or other is null; default_if_both_are_null if both are null; result of f call if both are not null.

◆ operator &=()

template<typename T>

template<typename T1 = T>

std::enable_if<std::is_same<T1, bool>::value, Nullable<T> >::type System::Nullable< T >::operator&= ( bool other )

inline

Applies operator&=() to the value represented by the current object using the specified value as a right-side argument.

Parameters

other A boolean value that is used as a right-side value of the operator&=() applied to the value represented by the current object.

Returns: A reference to the self.

Template Parameters

T1	The template parameter to make SFINAE work.

◆ operator const T &()

template<typename T>

System::Nullable< T >::operator const T & ( ) const

inline

Returns a constant reference to the value represented by the current object.

Returns: A constant reference to the value represented by the current object

Exceptions

InvalidOperationException If the current object does not represent any value

◆ operator!=() [1/3]

template<typename T>

bool System::Nullable< T >::operator!= ( std::nullptr_t ) const

inline

Determines if the value represented by the current object is not null.

Returns: True if the value represented by the current object is not null, otherwise - false

◆ operator!=() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator!= ( const T1 & other ) const

inline

Determines if the value represented by the current object is not equal to the specified value.

Parameters

other A constant reference to the value to compare with

Returns: True if the value represented by the current object is not equal to the specified value, otherwise - false

Template Parameters

T1	The type of the value to compare with

◆ operator!=() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator!= ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is not equal to the value represented by the specified Nullable object.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is not equal to the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator+() [1/3]

template<typename T>

Nullable<T> System::Nullable< T >::operator+ ( std::nullptr_t ) const

inline

Returns a default constructed instance of Nullable<T> class.

◆ operator+() [2/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<!IsNullable<T1>::value, int>::type>

auto System::Nullable< T >::operator+ ( const T1 & other ) const -> Nullable<decltype(get_Value() + other)>

inline

Sums nullable and non-nullable values.

Template Parameters

T1	Right operand type.

Parameters

other value to add.

Returns: Summing result.

◆ operator+() [3/3]

template<typename T>

template<typename T1 >

auto System::Nullable< T >::operator+ ( const Nullable< T1 > & other ) const -> System::Nullable<decltype(get_Value() + other.get_Value())>

inline

Sums nullable values.

Template Parameters

T1	Right operand type.

Parameters

other value to add.

Returns: Summing result.

◆ operator+=() [1/3]

template<typename T>

Nullable<T> System::Nullable< T >::operator+= ( std::nullptr_t )

inline

Resets the current object so that it represents a null-value.

Returns: A copy of the self

◆ operator+=() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, Nullable<T> >::type System::Nullable< T >::operator+= ( const T1 & other )

inline

Applies operator+=() to the value represented by the current object using the specified value as a right-side argument.

Parameters

other A constant reference to the value that is used as a right-side value of the operator+=() applied to the value represented by the current object.

Returns: A reference to the self

Template Parameters

T1	The type of the value used as the right-side value of operator+=()

◆ operator+=() [3/3]

template<typename T>

template<typename T1 >

Nullable<T> System::Nullable< T >::operator+= ( const Nullable< T1 > & other )

inline

Applies operator+=() to the value represented by the current object using the value represented by the specified Nullable object as the right-side argument.

Parameters

other A constant reference to Nullable object the value represented by which is used as a right-side argument of the operator+=() applied to the value represented by the current object.

Returns: A reference to the self

Template Parameters

T1	The underlying type of a Nullable object the value represented by which is used as the right-side argument of operator+=()

◆ operator-() [1/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>::type>

Nullable<T> System::Nullable< T >::operator- ( T1 ) const

inline

Subtracts nullable and null-pointed values.

Template Parameters

T1	Right operand type, should be nullptr_t.

Returns: Empty Nullable object.

◆ operator-() [2/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<!IsNullable<T1>::value, int>::type>

auto System::Nullable< T >::operator- ( const T1 & other ) const -> Nullable<decltype(get_Value() - other)>

inline

Subtracts nullable and non-nullable values.

Template Parameters

T1	Right operand type.

Parameters

other value to subtract.

Returns: Subtraction result.

◆ operator-() [3/3]

template<typename T>

template<typename T1 >

auto System::Nullable< T >::operator- ( const Nullable< T1 > & other ) const -> System::Nullable<decltype(get_Value() - other.get_Value())>

inline

Subtracts nullable values.

Template Parameters

T1	Right operand type.

Parameters

other value to subtract.

Returns: Subtraction result.

◆ operator-=() [1/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>::type>

Nullable<T> System::Nullable< T >::operator-= ( T1 )

inline

Returns an instance of Nullable class that represents a null-value.

◆ operator-=() [2/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<!std::is_null_pointer<T1>::value, T1>::type>

std::enable_if<!IsNullable<T1>::value, Nullable<T> >::type System::Nullable< T >::operator-= ( const T1 & other )

inline

Applies operator-=() to the value represented by the current object using the specified value as a right-side argument.

Parameters

other A constant reference to the value that is used as a right-side value of the operator-=() applied to the value represented by the current object.

Returns: A reference to the self

Template Parameters

T1	The type of the value used as the right-side value of operator-=()

◆ operator-=() [3/3]

template<typename T>

template<typename T1 >

Nullable<T> System::Nullable< T >::operator-= ( const Nullable< T1 > & other )

inline

Applies operator-=() to the value represented by the current object using the value represented by the specified Nullable object as the right-side argument.

Parameters

other A constant reference to Nullable object the value represented by which is used as a right-side argument of the operator-=() applied to the value represented by the current object.

Returns: A reference to the self

Template Parameters

T1	The underlying type of a Nullable object the value represented by which is used as the right-side argument of operator-=()

◆ operator<() [1/3]

template<typename T>

bool System::Nullable< T >::operator< ( std::nullptr_t ) const

inline

Always returns false.

◆ operator<() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator< ( const T1 & other ) const

inline

Determines if the value represented by the current object is less than the specified value by applying operator<() to these values.

Parameters

other A constant reference to the value to compare with

Returns: True if the value represented by the current object is less than the specified value, otherwise - false

Template Parameters

T1	The type of the value to compare with

◆ operator<() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator< ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is less than the value represented by the specified Nullable object by applying operator<() to these values.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is less than the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator<=() [1/3]

template<typename T>

bool System::Nullable< T >::operator<= ( std::nullptr_t ) const

inline

Always returns false.

◆ operator<=() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator<= ( const T1 & other ) const

inline

Determines if the value represented by the current object is less or equal to the specified value by applying operator<=() to these values.

Parameters

other A constant reference to the value to compare with

Returns: True if the value represented by the current object is less or equal to the specified value, otherwise - false

Template Parameters

T1	The type of the value to compare with

◆ operator<=() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator<= ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is less or equal to the value represented by the specified Nullable object by applying operator<=() to these values.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is less or equal to the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator=() [1/3]

template<typename T>

template<typename T1 , typename = typename std::enable_if<std::is_null_pointer<T1>::value>>

Nullable<T> System::Nullable< T >::operator= ( std::nullptr_t )

inline

Assigns a null to the current object.

Returns: A Nullable object that represents null-value.

◆ operator=() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value && !std::is_null_pointer<T1>::value, Nullable<T>&>::type System::Nullable< T >::operator= ( const T1 & x )

inline

Replaces the object's currently represented value with the specified one.

Parameters

x	The new value to be represented by the current object

Returns: A reference to the self

Template Parameters

The	type of the new value to be represented by the current object

◆ operator=() [3/3]

template<typename T>

template<typename T1 >

Nullable<T>& System::Nullable< T >::operator= ( const Nullable< T1 > & x )

inline

Replaces the object's currently represented value with the specified one.

Parameters

x	The new value to be represented by the current object

Returns: A reference to the self

Template Parameters

The	type of the new value to be represented by the current object

◆ operator==() [1/3]

template<typename T>

bool System::Nullable< T >::operator== ( std::nullptr_t ) const

inline

Determines if the value represented by the current object is null.

Returns: True if the value represented by the current object is null, otherwise - false

◆ operator==() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator== ( const T1 & other ) const

inline

Determines if the value represented by the current object is equal to the specified value.

Parameters

other A constant reference to the value to compare with

Returns: True if the value represented by the current object is equal to the specified value, otherwise - false

Template Parameters

T1	The type of the value to compare with

◆ operator==() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator== ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is equal to the value represented by the specified Nullable object.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is equal to the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator>() [1/3]

template<typename T>

bool System::Nullable< T >::operator> ( std::nullptr_t ) const

inline

Always returns false.

◆ operator>() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator> ( const T1 & other ) const

inline

Determines if the value represented by the current object is greater than the specified value by applying operator>() to these values.

Parameters

other A constant reference to the value to compare with

Returns: True if the value represented by the current object is greater than the specified value, otherwise - false

Template Parameters

T1	The type of the value to compare with

◆ operator>() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator> ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is greater than the value represented by the specified Nullable object by applying operator>() to these values.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is greater than the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator>=() [1/3]

template<typename T>

bool System::Nullable< T >::operator>= ( std::nullptr_t ) const

inline

Always returns false.

Returns: Always - false

◆ operator>=() [2/3]

template<typename T>

template<typename T1 >

std::enable_if<!IsNullable<T1>::value, bool>::type System::Nullable< T >::operator>= ( const T1 & other ) const

inline

Determines if the value represented by the current object is greater or equal to the value represented by the specified object by applying operator>=() to these values.

Parameters

other A constant reference to an object to compare the current object with

Returns: True if the value represented by the current object is greater or equal to the value represented by the specified object, otherwise - false

Template Parameters

T1	The underlying type of the value to compare the value represented by the current object with

◆ operator>=() [3/3]

template<typename T>

template<typename T1 >

bool System::Nullable< T >::operator>= ( const Nullable< T1 > & other ) const

inline

Determines if the value represented by the current object is greater or equal to the value represented by the specified Nullable object by applying operator>=() to these values.

Parameters

other A constant reference to the Nullable object to compare with

Returns: True if the value represented by the current object is greater or equal to the value represented by the specified Nullable object, otherwise - false

Template Parameters

T1	The underlying type of the Nullable object to compare with

◆ operator|=()

template<typename T>

template<typename T1 = T>

std::enable_if<std::is_same<T1, bool>::value, Nullable<T> >::type System::Nullable< T >::operator|= ( bool other )

inline

Applies operator|=() to the value represented by the current object using the specified value as a right-side argument.

Parameters

other A boolean value that is used as a right-side value of the operator|=() applied to the value represented by the current object.

Returns: A reference to the self.

Template Parameters

T1	The template parameter to make SFINAE work.

◆ reset()

template<typename T>

void System::Nullable< T >::reset ( )

inline

Sets the currently represented value to null.

◆ ToString()

template<typename T>

String System::Nullable< T >::ToString ( ) const

inline

Converts the value represented by the current object to string.

Returns: A string representation of the value represented by the current object or an empty string if the value represented by the current object is null

Public Types

Public Member Functions

Detailed Description

template<typename T> class System::Nullable< T >

Member Typedef Documentation

◆ ValueType

Constructor & Destructor Documentation

◆ Nullable() [1/4]

◆ Nullable() [2/4]

◆ Nullable() [3/4]

◆ Nullable() [4/4]

Member Function Documentation

◆ Equals()

◆ get_HasValue()

◆ get_Value()

◆ GetHashCode()

◆ GetValueOrDefault() [1/2]

◆ GetValueOrDefault() [2/2]

◆ IsNull()

◆ NullableBoolHelper()

◆ operator &=()

◆ operator const T &()

◆ operator!=() [1/3]

◆ operator!=() [2/3]

◆ operator!=() [3/3]

◆ operator+() [1/3]

◆ operator+() [2/3]

◆ operator+() [3/3]

◆ operator+=() [1/3]

◆ operator+=() [2/3]

◆ operator+=() [3/3]

◆ operator-() [1/3]

◆ operator-() [2/3]

◆ operator-() [3/3]

◆ operator-=() [1/3]

◆ operator-=() [2/3]

◆ operator-=() [3/3]

◆ operator<() [1/3]

◆ operator<() [2/3]

◆ operator<() [3/3]

◆ operator<=() [1/3]

◆ operator<=() [2/3]

◆ operator<=() [3/3]

◆ operator=() [1/3]

◆ operator=() [2/3]

◆ operator=() [3/3]

◆ operator==() [1/3]

◆ operator==() [2/3]

◆ operator==() [3/3]

◆ operator>() [1/3]

◆ operator>() [2/3]

◆ operator>() [3/3]

◆ operator>=() [1/3]

◆ operator>=() [2/3]

◆ operator>=() [3/3]

◆ operator|=()

◆ reset()

◆ ToString()

template<typename T>
class System::Nullable< T >