Class Option<TValue>

Namespace

Cratis.Monads

Assembly

Cratis.Fundamentals.dll

Represents an optional value.

public class Option<TValue> : OneOfBase<TValue, None>, IOneOf

Type Parameters

TValue

The type of the value.

Inheritance

object

OneOfBase<TValue, None>

Option<TValue>

Implements

IOneOf

Inherited Members

OneOfBase<TValue, None>.Switch(Action<TValue>, Action<None>)

OneOfBase<TValue, None>.Match<TResult>(Func<TValue, TResult>, Func<None, TResult>)

OneOfBase<TValue, None>.TryPickT0(out TValue, out None)

OneOfBase<TValue, None>.TryPickT1(out None, out TValue)

OneOfBase<TValue, None>.Equals(object)

OneOfBase<TValue, None>.ToString()

OneOfBase<TValue, None>.GetHashCode()

OneOfBase<TValue, None>.Value

OneOfBase<TValue, None>.Index

OneOfBase<TValue, None>.IsT0

OneOfBase<TValue, None>.IsT1

OneOfBase<TValue, None>.AsT0

OneOfBase<TValue, None>.AsT1

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Extension Methods

MethodCalls.CallGenericMethod<TOut, T>(T, Expression<Func<T, Func<TOut>>>, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1>(T, Expression<Func<T, Func<T1, TOut>>>, T1, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2>(T, Expression<Func<T, Func<T1, T2, TOut>>>, T1, T2, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2, T3>(T, Expression<Func<T, Func<T1, T2, T3, TOut>>>, T1, T2, T3, params Type[])

ConverterExtensions.ConvertTo(object, Type)

ConceptExtensions.GetConceptValue(object)

ConceptExtensions.IsConcept(object)

JsonValueExtensions.ToJsonValue(object?)

ObservableExtensions.InvokeAndWrapWithSubject<TResult>(object, Func<CancellationToken, IObservable<TResult>>)

ObservableExtensions.InvokeAndWrapWithTransformSubject<TResult, TSource>(object, Func<CancellationToken, IObservable<TSource>>, Func<TSource, TResult>)

Constructors

Option(OneOf<TValue, None>)

public Option(OneOf<TValue, None> _)

Parameters

_ OneOf<TValue, None>

Properties

HasValue

Gets whether value is present.

public bool HasValue { get; }

Property Value

bool

Methods

None()

Creates a none Option<TValue>.

public static Option<TValue> None()

Returns

Option<TValue>

The created Option<TValue>.

TryGetValue(out TValue)

Try to get the value.

public bool TryGetValue(out TValue value)

Parameters

value TValue

The value.

Returns

bool

A boolean indicating whether the value is present.

Operators

explicit operator None(Option<TValue>)

public static explicit operator None(Option<TValue> _)

Parameters

_ Option<TValue>

Returns

None

explicit operator TValue(Option<TValue>)

public static explicit operator TValue(Option<TValue> _)

Parameters

_ Option<TValue>

Returns

TValue

implicit operator Option<TValue>(None)

public static implicit operator Option<TValue>(None _)

Parameters

_ None

Returns

Option<TValue>

implicit operator Option<TValue>(TValue)

public static implicit operator Option<TValue>(TValue _)

Parameters

_ TValue

Returns

Option<TValue>