NonNullableOnceCell<T extends Object> class

OnceCell, A cell which can be written to only once. OnceCell implementation based off Option

Equality: Cells are equal if they have the same value or are not set.

Hash: Cells hash to their existing or the same if not set.

Implemented types

Properties

hashCode int
The hash code for this object.
no setteroverride
runtimeType Type
A representation of the runtime type of the object.
no setterinherited

Methods

get() Option<T>
Gets the reference to the underlying value.
override
getOrInit(T func()) → T
Gets the contents of the cell, initializing it with func if the cell was empty.
override
getOrNull() → T?
Gets the underlying value, returns null if the cell is empty
override
getOrTryInit<E extends Object>(Result<T, E> f()) Result<T, E>
Gets the contents of the cell, initializing it with f if the cell was empty. If the cell was empty and f failed, an error is returned.
override
isSet() bool
Returns true if the value has been set. Returns false otherwise.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
set(T value) Result<(), T>
Sets the contents of the cell to value.
override
setOrNull(T value) → T?
Sets the contents of the cell to value. Returns null if the value is already set.
override
take() Option<T>
Takes the value out of this OnceCell, moving it back to an uninitialized state.
override
takeOrNull() → T?
Takes the value out of this OnceCell, moving it back to an uninitialized state. Returns null if the cell is empty.
override
toString() String
A string representation of this object.
override

Operators

operator ==(Object other) bool
The equality operator.
override