Interface IOptionMonad<T, TSelf>

Represents the common interface for all option monads.

Inherited Members

IOptionMonad<T>.HasValue

IOptionMonad<T>.ValueOrDefault

IOptionMonad<T>.Or(T)

IOptionMonad<T>.OrInvoke(Func<T>)

IOptionMonad<T>.TryGet(out T)

ISupplier<object>.Invoke()

ISupplier<object>.NullOrDefault

IFunctional<Func<object>>.ToDelegate()

Namespace: DotNext

Assembly: DotNext.dll

Syntax

public interface IOptionMonad<T, TSelf> : IOptionMonad<T>, ISupplier<object?>, IFunctional<Func<object?>> where TSelf : struct, IOptionMonad<T, TSelf>

Type Parameters

Name	Description
T	The type of the value in the container.
TSelf	The implementing type.

Operators

operator |(in TSelf, T?)

Returns the value if present; otherwise return default value.

Declaration

public static T? operator |(in TSelf container, T? defaultValue)

Parameters

Type	Name	Description
TSelf	container	The container to check.
T	defaultValue	The value to be returned if there is no value present.

Returns

Type	Description
T	The value, if present, otherwise defaultValue.

operator |(in TSelf, in TSelf)

Returns non-empty container.

Declaration

public static TSelf operator |(in TSelf x, in TSelf y)

Parameters

Type	Name	Description
TSelf	x	The first container.
TSelf	y	The second container.

Returns

Type	Description
TSelf	The first non-empty container.

explicit operator T(in TSelf)

Attempts to extract the value from the container.

Declaration

public static abstract explicit operator T(in TSelf container)

Parameters

Type	Name	Description
TSelf	container	The container.

Returns

Type	Description
T	The extracted value.

operator false(in TSelf)

Checks whether the container has no value.

Declaration

public static bool operator false(in TSelf container)

Parameters

Type	Name	Description
TSelf	container	The container to check.

Returns

Type	Description
bool	true if this container has no value; otherwise, false.

implicit operator TSelf(T)

Places the value to the container.

Declaration

public static abstract implicit operator TSelf(T value)

Parameters

Type	Name	Description
T	value	The value to be placed into the container.

Returns

Type	Description
TSelf	The constructed monad.

operator !(in TSelf)

Checks whether the container has no value.

Declaration

public static bool operator !(in TSelf container)

Parameters

Type	Name	Description
TSelf	container	The container to check.

Returns

Type	Description
bool	true if this container has no value; otherwise, false.

operator true(in TSelf)

Checks whether the container has value.

Declaration

public static bool operator true(in TSelf container)

Parameters

Type	Name	Description
TSelf	container	The container to check.

Returns

Type	Description
bool	true if this container has value; otherwise, false.