NullableDataType<T> class

Some DataType instances do not support null values in the way they represent their data. This wrapper turns those types into nullable ones.

Inheritance

Constructors

defaultValue → T?: Returns the default value, typically equivalent to the zero or null value.
no setteroverride
delegate → DataType<T>: final
equality → Equality<T?>: Returns an equality relation.
no setterinherited
field → Field<T?>: Returns a mathematical field, if available.
no setterinherited
hashCode → int: The hash code for this object.
no setteroverride
isNullable → bool: Returns true, if this DataType supports null values.
no setteroverride
name → String: Returns the name of this DataType.
no setteroverride
nullable → DataType<T?>: Returns a DataType that supports null values.
no setterinherited
nullsFirst → bool: final
printer → Printer<T?>: Returns a default printer for this data type.
no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

cast(dynamic value) → T?: Casts the argument to this data type, otherwise throw an ArgumentError.
override
castList(Iterable<Object?> elements) → List<T?>: Casts an existing iterable to this data type.
inherited
comparator(T? a, T? b) → int: Returns a Comparator that compares one element to another.
override
copyList(Iterable<T?> iterable, {int? length, T? fillValue, bool readonly = false}) → List<T?>: Creates a fixed-length list copy of the iterable, possibly with a modified length and if necessary populated with fillValue.
inherited
newList(int length, {Map1<int, T?>? generate, T? fillValue, bool readonly = false}) → List<T?>: Creates a fixed-length list of this data type.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited