Required class Null safety

Used to annotate a named parameter p in a method or function f.

See required for more details.

Constructors

Required([String reason = ''])
Initialize a newly created instance to have the given reason.
const

Properties

hashCode → int
The hash code for this object.
read-onlyinherited
reason → String
A human-readable explanation of the reason why the annotated parameter is required. For example, the annotation might look like:
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited