Some<T> class

Means "has value"

Available extensions

• FlattenMaybeImpl
• MaybeImpl

Constructors

Some(T value)

const

Properties

has → bool

Available on Maybe<T>?, provided by the MaybeImpl extension

Get the Value if it has

no setter

hashCode → int

The hash code for this object.

no setter, override

isNone → bool

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns true if the this is a None value

no setter

isSome → bool

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns true if the this is a Some value

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

v → T

no setter

val → T?

Available on Maybe<T>?, provided by the MaybeImpl extension

no setter

value → T

final

Methods

and<U>(Maybe<U>? other) → Maybe<U>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns None if the this is None, otherwise returns other

andThen<U>(Maybe<U>? f(T val)) → Maybe<U>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns None if the this is None, otherwise calls f with the wrapped value and returns the result

defaultVal(T v) → Maybe<T>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Set a default value when it is None(null)

defaultValFn(T fn()) → Maybe<T>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Set a default value when it is None(null)

flatMap<U>(Maybe<U>? f(T val)) → Maybe<U>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns None if the this is None, otherwise calls f with the wrapped value and returns the result

flatten() → Maybe<T>?

Available on Maybe<Maybe<T>?>?, provided by the FlattenMaybeImpl extension

Converts from Maybe<Maybe<T>> to Maybe<T>

map<U>(U f(T val)) → Maybe<U>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Maps an Maybe

none<R>(R none()) → Maybe<R>?

Available on Maybe<T>?, provided by the MaybeImpl extension

When it not has Value Return Some(none(it))

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

or(Maybe<T>? other) → Maybe<T>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns this if this contains a value, otherwise returns other

orElse(Maybe<T>? f()) → Maybe<T>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns this if this contains a value, otherwise calls f and returns the result

some<R>(R some(T val)) → Maybe<R>?

Available on Maybe<T>?, provided by the MaybeImpl extension

fMap

then<U>(U f(T val)) → Maybe<U>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Maps an Maybe

toString() → String

A string representation of this object.

inherited

when<R>({R some(T val)?, R none()?}) → Maybe<R>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Pattern matching

xor(Maybe<T>? other) → Maybe<T>?

Available on Maybe<T>?, provided by the MaybeImpl extension

Returns Some if exactly one of this, other is Some, otherwise returns None

Operators

operator ==(Object other) → bool

The equality operator.

override