Result is a type that represents either success (Ok) or failure
(Err).
- Implementers
- Available Extensions
- Annotations
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Properties
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hashCode
→ int
-
The hash code for this object.
no setterinherited
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isErr
→ bool
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Returns
true if the result is Err.
no setter
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isOk
→ bool
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Returns
true if the result is Ok.
no setter
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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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and<U>(Result<U, E> res)
→ Result<U, E>
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Returns
res if the result is Ok, otherwise returns the Err value of
this.
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andThen<U>(Result<U, E> op(T value))
→ Result<U, E>
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Calls
op if the result is Ok, otherwise returns the Err value of
this.
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err()
→ E?
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Converts from
Result<T, E> to E?.
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errOpt()
→ Option<E>
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Converts from
Result<T, E> to Option<E>.
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expect(String msg)
→ T
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Returns the contained Ok value, consuming the
this value.
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expectErr(String msg)
→ E
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Returns the contained Err value, consuming the
this value.
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iter()
→ Iterable<T>
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Returns an iterable over the possibly contained value.
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map<U>(U op(T value))
→ Result<U, E>
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Maps a
Result<T, E> to Result<U, E> by applying a function to a
contained Ok value, leaving an Err value untouched.
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mapErr<F>(F op(E err))
→ Result<T, F>
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Maps a
Result<T, E> to Result<T, F> by applying a function to a
contained Err value, leaving an Ok value untouched.
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mapOr<U>(U defaultValue, U f(T value))
→ U
-
Returns the provided default (if Err), or
applies a function to the contained value (if Ok),
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mapOrElse<U>(U defaultF(E err), U f(T value))
→ U
-
Maps a
Result<T, E> to U by applying fallback function defaultF to
a contained Err value, or function f to a contained Ok value.
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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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ok()
→ T?
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Converts from
Result<T, E> to T?.
-
okOpt()
→ Option<T>
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Converts from
Result<T, E> to Option<T>.
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or<F>(Result<T, F> res)
→ Result<T, F>
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Returns
res if the result is Err, otherwise returns the Ok value of
this.
-
orElse<F>(Result<T, F> op(E err))
→ Result<T, F>
-
Calls
op if the result is Err, otherwise returns the Ok value of
this.
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toString()
→ String
-
A string representation of this object.
inherited
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unwrap()
→ T
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Returns the contained Ok value, consuming the
this value.
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unwrapErr()
→ E
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Returns the contained Err value, consuming the
this value.
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unwrapOr(T defaultValue)
→ T
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Returns the contained Ok value or a provided default.
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unwrapOrElse(T op(E err))
→ T
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Returns the contained Ok value or computes it from a closure.
