GenericNullable<T>

Overview

Wrapper class for nullable types that can be both value and class types.

Location

 

constructor  protected    (declared in ValueType)

 

constructor

 

GenericNullable<T>()

 

init()

 

GenericNullable<T>()

 

Sub New()

constructor (T)

 

constructor(aValue: T)

 

GenericNullable<T>(T aValue)

 

init(_ aValue: T)

 

GenericNullable<T>(T aValue)

 

Sub New(aValue As T)

Parameters:

  • aValue:

Equals  virtual    (declared in Object)

Default constructor.

 

method Equals(aOther: Object): Boolean

 

Boolean Equals(Object aOther)

 

func Equals(_ aOther: Object) -> Boolean

 

Boolean Equals(Object aOther)

 

Function Equals(aOther As Object) As Boolean

Parameters:

  • aOther: the reference to compare this with.

Finalize  protected virtual    (declared in Object)

 

method Finalize

 

void Finalize()

 

func Finalize()

 

void Finalize()

 

Sub Finalize()

GetHashCode  virtual    (declared in Object)

Returns a hashcode for this object. Overriden implementations should make sure that the number returned here is constant given the same object.

 

method GetHashCode: Int32

 

Int32 GetHashCode()

 

func GetHashCode() -> Int32

 

Int32 GetHashCode()

 

Function GetHashCode() As Int32

GetType    (declared in Object)

Returns the actual type of this class

 

method GetType: Type

 

Type GetType()

 

func GetType() -> Type

 

Type GetType()

 

Function GetType() As Type

GetValueOrDefault

Returns the value or default(T) if it's not set.

 

method GetValueOrDefault: T

 

T GetValueOrDefault()

 

func GetValueOrDefault() -> T

 

T GetValueOrDefault()

 

Function GetValueOrDefault() As T

GetValueOrDefault (T): T

Returns the value or a default if it's not set.

 

method GetValueOrDefault(aDefault: T): T

 

T GetValueOrDefault(T aDefault)

 

func GetValueOrDefault(_ aDefault: T) -> T

 

T GetValueOrDefault(T aDefault)

 

Function GetValueOrDefault(aDefault As T) As T

Parameters:

  • aDefault:

HasValue

returns true if this nullable is set.

 

property HasValue: Boolean read;

 

Boolean HasValue { get; }

 

var HasValue: Boolean { get{} }

 

Boolean HasValue { __get; }

 

ReadOnly Property HasValue() As Boolean

ReferenceEquals    (declared in Object)

Compares two references for equivalence (even if they have an equals operator)

 

class method ReferenceEquals(a: Object; b: Object): Boolean

 

static Boolean ReferenceEquals(Object a, Object b)

 

static func ReferenceEquals(_ a: Object, _ b: Object) -> Boolean

 

static Boolean ReferenceEquals(Object a, Object b)

 

Shared Function ReferenceEquals(a As Object, b As Object) As Boolean

Parameters:

  • a: left value
  • b: right value

ToString  virtual    (declared in Object)

Gets the string representation of this method.

 

method ToString: String

 

String ToString()

 

func ToString() -> String

 

String ToString()

 

Function ToString() As String

Value

Implicitly convert a nullable to T. Throws if it's nil.

 

property Value: T read;

 

T Value { get; }

 

var Value: T { get{} }

 

T Value { __get; }

 

ReadOnly Property Value() As T

 

HasValue

returns true if this nullable is set.

 

property HasValue: Boolean read;

 

Boolean HasValue { get; }

 

var HasValue: Boolean { get{} }

 

Boolean HasValue { __get; }

 

ReadOnly Property HasValue() As Boolean

Value

Implicitly convert a nullable to T. Throws if it's nil.

 

property Value: T read;

 

T Value { get; }

 

var Value: T { get{} }

 

T Value { __get; }

 

ReadOnly Property Value() As T

 

ReferenceEquals    (declared in Object)

Compares two references for equivalence (even if they have an equals operator)

 

class method ReferenceEquals(a: Object; b: Object): Boolean

 

static Boolean ReferenceEquals(Object a, Object b)

 

static func ReferenceEquals(_ a: Object, _ b: Object) -> Boolean

 

static Boolean ReferenceEquals(Object a, Object b)

 

Shared Function ReferenceEquals(a As Object, b As Object) As Boolean

Parameters:

  • a: left value
  • b: right value

 

constructor  protected    (declared in ValueType)

 

constructor

 

GenericNullable<T>()

 

init()

 

GenericNullable<T>()

 

Sub New()

constructor (T)

 

constructor(aValue: T)

 

GenericNullable<T>(T aValue)

 

init(_ aValue: T)

 

GenericNullable<T>(T aValue)

 

Sub New(aValue As T)

Parameters:

  • aValue:

Equals  virtual    (declared in Object)

Default constructor.

 

method Equals(aOther: Object): Boolean

 

Boolean Equals(Object aOther)

 

func Equals(_ aOther: Object) -> Boolean

 

Boolean Equals(Object aOther)

 

Function Equals(aOther As Object) As Boolean

Parameters:

  • aOther: the reference to compare this with.

Finalize  protected virtual    (declared in Object)

 

method Finalize

 

void Finalize()

 

func Finalize()

 

void Finalize()

 

Sub Finalize()

GetHashCode  virtual    (declared in Object)

Returns a hashcode for this object. Overriden implementations should make sure that the number returned here is constant given the same object.

 

method GetHashCode: Int32

 

Int32 GetHashCode()

 

func GetHashCode() -> Int32

 

Int32 GetHashCode()

 

Function GetHashCode() As Int32

GetType    (declared in Object)

Returns the actual type of this class

 

method GetType: Type

 

Type GetType()

 

func GetType() -> Type

 

Type GetType()

 

Function GetType() As Type

GetValueOrDefault

Returns the value or default(T) if it's not set.

 

method GetValueOrDefault: T

 

T GetValueOrDefault()

 

func GetValueOrDefault() -> T

 

T GetValueOrDefault()

 

Function GetValueOrDefault() As T

GetValueOrDefault (T): T

Returns the value or a default if it's not set.

 

method GetValueOrDefault(aDefault: T): T

 

T GetValueOrDefault(T aDefault)

 

func GetValueOrDefault(_ aDefault: T) -> T

 

T GetValueOrDefault(T aDefault)

 

Function GetValueOrDefault(aDefault As T) As T

Parameters:

  • aDefault:

ToString  virtual    (declared in Object)

Gets the string representation of this method.

 

method ToString: String

 

String ToString()

 

func ToString() -> String

 

String ToString()

 

Function ToString() As String