T_CSharpx_Maybe_1

Maybe(T) Class

The Maybe type models an optional value. A value of type Maybe a either contains a value of type a (represented as Just a), or it is empty (represented as Nothing).

Inheritance Hierarchy

System.Object
  CSharpx.Maybe(T)
    CSharpx.Just(T)
    CSharpx.Nothing(T)
Namespace: CSharpx
Assembly: CommandLine (in CommandLine.dll) Version: 0.0.0

Syntax

C#

internal abstract class Maybe<T>

VB

Friend MustInherit Class Maybe(Of T)

C++

generic<typename T>
internal ref class Maybe abstract

F#

[<AbstractClassAttribute>]
type Maybe<'T> =  class end

Type Parameters

 

T

  The Maybe(T) type exposes the following members.

Constructors

 

	Name	Description
	Maybe(T)	Initializes a new instance of the Maybe(T) class

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Properties

 

	Name	Description
	Tag	Type discriminator.

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Methods

 

	Name	Description
	Equals	Determines whether the specified object is equal to the current object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Serves as the default hash function. (Inherited from Object.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MatchJust	Matches a value returning true and value itself via output parameter.
	MatchNothing	Matches an empty value returning true.
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Extension Methods

 

	Name	Description
	Bind(T1, T2)	Invokes a function on this maybe value that itself yields a maybe. (Defined by MaybeExtensions.)
	Do(T)	If contans a value executes an Action(T) delegate over it. (Defined by MaybeExtensions.)
	FromJust(T)	Extracts the element out of a Just(T) and returns a default value if its argument is Nothing(T). (Defined by MaybeExtensions.)
	FromJustOrFail(T)	Extracts the element out of a Just(T) and throws an error if its argument is Nothing(T). (Defined by MaybeExtensions.)
	GetValueOrDefault(T)	If contains a values returns it, otherwise returns noneValue. (Defined by MaybeExtensions.)
	IsEmpty	(Defined by UnParserExtensions.)
	IsJust(T)	Returns true iffits argument is of the form Just(T). (Defined by MaybeExtensions.)
	IsNothing(T)	Returns true iffits argument is of the form Nothing(T). (Defined by MaybeExtensions.)
	Map(T1, T2)	Transforms this maybe value by using a specified mapping function. (Defined by MaybeExtensions.)
	MapValueOrDefault(T1, T2)	If contains a values executes a mapping function over it, otherwise returns noneValue. (Defined by MaybeExtensions.)
	Match(T)	Provides pattern matching using Action delegates. (Defined by MaybeExtensions.)
	NormalizeValue	(Defined by UnParserExtensions.)
	Select(TSource, TResult)	Map operation compatible with Linq. (Defined by MaybeExtensions.)
	SelectMany(TSource, TValue, TResult)	Bind operation compatible with Linq. (Defined by MaybeExtensions.)
	ToEnumerable(T)	Returns an empty list when given Nothing(T) or a singleton list when given a Just(T). (Defined by MaybeExtensions.)

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See Also

Reference

CSharpx Namespace