Struct NullableObject<T>

Namespace

MudBlazor.Utilities

Assembly

MudBlazor.dll

Represents a wrapper for an object that can be null.

public readonly struct NullableObject<T> : IEquatable<NullableObject<T>>, IEquatable<T>

Type Parameters

T

The type of the object.

Implements

IEquatable<NullableObject<T>>

IEquatable<T>

Inherited Members

object.GetType()

object.Equals(object, object)

object.ReferenceEquals(object, object)

Extension Methods

ObjectExtensions.As<T>(object?)

Constructors

NullableObject(T?)

Initializes a new instance of the NullableObject<T> struct.

public NullableObject(T? item)

Parameters

item T

The item to wrap.

Properties

IsNull

Gets a value indicating whether the wrapped item is null.

public bool IsNull { get; }

Property Value

bool

Item

Gets the wrapped item.

public T? Item { get; }

Property Value

T

Null

Gets a NullableObject<T> that represents a null value.

public static NullableObject<T> Null { get; }

Property Value

NullableObject<T>

Remarks

If T is a struct that is not wrapped in Nullable<T>, this property will return a NullableObject<T> with a non-null default value because structs cannot be null unless wrapped in Nullable<T>.

Methods

Equals(NullableObject<T>)

Indicates whether the current object is equal to another object of the same type.

public bool Equals(NullableObject<T> other)

Parameters

other NullableObject<T>

An object to compare with this object.

Returns

bool

true if the current object is equal to the other parameter; otherwise, false.

Equals(object?)

Determines whether the specified object is equal to the current object.

public override bool Equals(object? obj)

Parameters

obj object

The object to compare with the current object.

Returns

bool

true if the specified object is equal to the current object; otherwise, false.

Remarks

If you compare two NullableObject<T> instances with different generic types and both are null, the Equals(object?) method will return false because they are considered two different null values. There is a type match check.

Equals(T?)

Indicates whether the current object is equal to another object of the same type.

public bool Equals(T? other)

Parameters

other T

An object to compare with this object.

Returns

bool

true if the current object is equal to the other parameter; otherwise, false.

GetHashCode()

Serves as the default hash function.

public override int GetHashCode()

Returns

int

A hash code for the current object.

ToString()

Returns a string that represents the current object.

public override string? ToString()

Returns

string

A string that represents the current object.

Operators

operator ==(NullableObject<T>, NullableObject<T>)

Determines whether two specified instances of NullableObject<T> are equal.

public static bool operator ==(NullableObject<T> left, NullableObject<T> right)

Parameters

left NullableObject<T>

The first object to compare.

right NullableObject<T>

The second object to compare.

Returns

bool

true if the left and right parameters are equal; otherwise, false.

implicit operator T?(NullableObject<T>)

Performs an implicit conversion from NullableObject<T> to T.

public static implicit operator T?(NullableObject<T> nullObject)

Parameters

nullObject NullableObject<T>

The NullableObject<T> to convert.

Returns

T

implicit operator NullableObject<T>(T?)

Performs an implicit conversion from T to NullableObject<T>.

public static implicit operator NullableObject<T>(T? item)

Parameters

item T

The item to convert.

Returns

NullableObject<T>

operator !=(NullableObject<T>, NullableObject<T>)

Determines whether two specified instances of NullableObject<T> are not equal.

public static bool operator !=(NullableObject<T> left, NullableObject<T> right)

Parameters

left NullableObject<T>

The first object to compare.

right NullableObject<T>

The second object to compare.

Returns

bool

true if the left and right parameters are not equal; otherwise, false.