Object class Null safety

The base class for all Dart objects except null.

Because Object is a root of the non-nullable Dart class hierarchy, every other non-Null Dart class is a subclass of Object.

When you define a class, you should consider overriding toString to return a string describing an instance of that class. You might also need to define hashCode and operator ==, as described in the Implementing map keys section of the library tour.

Constructors

Object()
Creates a new Object instance.
const

Properties

hashCode int
The hash code for this object.
read-only
runtimeType Type
A representation of the runtime type of the object.
read-only

Methods

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

Operators

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

Static Methods

hash(Object? object1, Object? object2, [Object? object3 = sentinelValue, Object? object4 = sentinelValue, Object? object5 = sentinelValue, Object? object6 = sentinelValue, Object? object7 = sentinelValue, Object? object8 = sentinelValue, Object? object9 = sentinelValue, Object? object10 = sentinelValue, Object? object11 = sentinelValue, Object? object12 = sentinelValue, Object? object13 = sentinelValue, Object? object14 = sentinelValue, Object? object15 = sentinelValue, Object? object16 = sentinelValue, Object? object17 = sentinelValue, Object? object18 = sentinelValue, Object? object19 = sentinelValue, Object? object20 = sentinelValue]) int
Creates a combined hash code for a number of objects.
@Since("2.14")
hashAll(Iterable<Object?> objects) int
Creates a combined hash code for a sequence of objects.
@Since("2.14")
hashAllUnordered(Iterable<Object?> objects) int
Creates a combined hash code for a collection of objects.
@Since("2.14")