None<A> class
Constructors
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None()
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const
Properties
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hashCode
→ int
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The hash code for this object.
no setteroverride
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runtimeType
→ Type
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A representation of the runtime type of the object.
no setterinherited
Methods
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all(bool f(A a))
→ bool
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inherited
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andThen<B>(covariant Option<B> next)
→ Option<B>
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inherited
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any(bool f(A a))
→ bool
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inherited
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ap<B>(covariant Option<Function1<A, B>> ff)
→ Option<B>
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inherited
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appendElement(A a)
→ Option<A>
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inherited
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bind<B>(covariant Function1<A, Option<B>> f)
→ Option<B>
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inherited
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cata<B, B2 extends B>(B ifNone(), B2 ifSome(A a))
→ B
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inherited
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concatenate(Monoid<A> mi)
→ A
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inherited
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concatenateO(Semigroup<A> si)
→ Option<A>
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inherited
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every(bool f(A a))
→ bool
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inherited
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filter(bool predicate(A a))
→ Option<A>
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inherited
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flatMap<B>(covariant Function1<A, Option<B>> f)
→ Option<B>
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inherited
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fold<B>(B ifNone(), B ifSome(A a))
→ B
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override
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foldLeft<B>(B z, B f(B previous, A a))
→ B
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inherited
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foldLeftWithIndex<B>(B z, B f(B previous, int i, A a))
→ B
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inherited
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foldMap<B>(Monoid<B> bMonoid, B f(A a))
→ B
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inherited
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foldMapO<B>(Semigroup<B> si, B f(A a))
→ Option<B>
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inherited
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foldRight<B>(B z, B f(A a, B previous))
→ B
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inherited
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foldRightWithIndex<B>(B z, B f(int i, A a, B previous))
→ B
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inherited
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forEach(void sideEffect(A a))
→ void
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inherited
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getOrElse(A dflt())
→ A
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inherited
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intercalate(Monoid<A> mi, A a)
→ A
-
inherited
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isNone()
→ bool
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inherited
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isSome()
→ bool
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inherited
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iterator()
→ Iterator<A>
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inherited
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length()
→ int
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inherited
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map<B>(B f(A a))
→ Option<B>
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inherited
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mapWithIndex<B>(B f(int i, A a))
→ Option<B>
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inherited
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maximum(Order<A> oa)
→ Option<A>
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inherited
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minimum(Order<A> oa)
→ Option<A>
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inherited
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noSuchMethod(Invocation invocation)
→ dynamic
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Invoked when a nonexistent method or property is accessed.
inherited
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orElse(Option<A> other())
→ Option<A>
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inherited
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partition(bool f(A a))
→ Tuple2<Option<A>, Option<A>>
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inherited
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plus(covariant Option<A> o2)
→ Option<A>
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inherited
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prependElement(A a)
→ Option<A>
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inherited
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replace<B>(B replacement)
→ Option<A>
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inherited
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reverse()
→ Option<A>
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inherited
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strengthL<B>(B b)
→ Option<Tuple2<B, A>>
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inherited
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strengthR<B>(B b)
→ Option<Tuple2<A, B>>
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inherited
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toEither<B>(B ifNone())
→ Either<B, A>
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inherited
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toIterable()
→ Iterable<A>
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inherited
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toNullable()
→ A?
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inherited
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toString()
→ String
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A string representation of this object.
inherited
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traverseFree<F, B>(Free<F, B> f(A a))
→ Free<F, Option<B>>
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inherited
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traverseFuture<B>(Future<B> f(A a))
→ Future<Option<B>>
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inherited
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traverseIList<B>(IList<B> f(A a))
→ IList<Option<B>>
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inherited
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traverseIVector<B>(IVector<B> f(A a))
→ IVector<Option<B>>
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inherited
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traverseState<S, B>(State<S, B> f(A a))
→ State<S, Option<B>>
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inherited
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traverseTask<B>(Task<B> f(A a))
→ Task<Option<B>>
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inherited
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where(bool predicate(A a))
→ Option<A>
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inherited
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zipWithIndex()
→ Option<Tuple2<int, A>>
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inherited
