Interface IOptionMonad<T>

Represents common interface for all option monads.

Inherited Members
Namespace: DotNext
Assembly: DotNext.dll
Syntax
public interface IOptionMonad<T> : ISupplier<object?>, IFunctional<Func<object?>>
Type Parameters
Name Description
T

The type of the value in the container.

Properties

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HasValue

Indicates that this monad contains a value.

Declaration
bool HasValue { get; }
Property Value
Type Description
bool
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ValueOrDefault

If a value is present, returns the value, otherwise return default value.

Declaration
T? ValueOrDefault { get; }
Property Value
Type Description
T

The value, if present, otherwise default.

Methods

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Or(T?)

Returns the value if present; otherwise return default value.

Declaration
T? Or(T? defaultValue)
Parameters
Type Name Description
T defaultValue

The value to be returned if there is no value present.
Returns
Type Description
T

The value, if present, otherwise defaultValue.
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OrInvoke(Func<T>)

Returns the value if present; otherwise invoke delegate.

Declaration
T OrInvoke(Func<T> defaultFunc)
Parameters
Type Name Description
Func<T> defaultFunc

A delegate to be invoked if value is not present.
Returns
Type Description
T

The value, if present, otherwise returned from delegate.
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TryGet(out T?)

Attempts to extract value from container if it is present.

Declaration
bool TryGet(out T? value)
Parameters
Type Name Description
T value

Extracted value.
Returns
Type Description
bool

true if value is present; otherwise, false.

Extension Methods