GlobalId class
class GlobalId implements Hashable, Comparable { static int _globalId = 0; final int id; final int _hashCode; GlobalId._internal(int value) : id = value, _hashCode = Util.getHashCode([value]); factory GlobalId() { return new GlobalId._internal(_globalId++); } int compareTo(GlobalId other) => id.compareTo(other.id); int hashCode() => _hashCode; bool operator ==(GlobalId other) => other != null && other.id == id; }
Implements
Constructors
factory GlobalId() #
factory GlobalId() { return new GlobalId._internal(_globalId++); }
new GlobalId._internal(int value) #
GlobalId._internal(int value) : id = value, _hashCode = Util.getHashCode([value]);
Properties
final int id #
final int id;
final Type runtimeType #
A representation of the runtime type of the object.
external Type get runtimeType;
Operators
bool operator ==(GlobalId other) #
The equality operator.
The default behavior for all Object
s is to return true if and
only if this
and
other are the same object.
If a subclass overrides the equality operator it should override the hashCode method as well to maintain consistency.
bool operator ==(GlobalId other) => other != null && other.id == id;
Methods
int compareTo(GlobalId other) #
Compares this object to another Comparable
Returns a value like a Comparator
when comparing this
to
other.
May throw an ArgumentError
if
other is of a type that
is not comparable to this
.
int compareTo(GlobalId other) => id.compareTo(other.id);
factory GlobalId() #
factory GlobalId() { return new GlobalId._internal(_globalId++); }
new GlobalId._internal(int value) #
GlobalId._internal(int value) : id = value, _hashCode = Util.getHashCode([value]);
int hashCode() #
Get a hash code for this object.
All objects have hash codes. Hash codes are guaranteed to be the
same for objects that are equal when compared using the equality
operator ==
. Other than that there are no guarantees about
the hash codes. They will not be consistent between runs and
there are no distribution guarantees.
If a subclass overrides hashCode it should override the equality operator as well to maintain consistency.
int hashCode() => _hashCode;
noSuchMethod(String name, List args) #
noSuchMethod
is invoked when users invoke a non-existant method
on an object. The name of the method and the arguments of the
invocation are passed to noSuchMethod
. If noSuchMethod
returns a value, that value becomes the result of the original
invocation.
The default behavior of noSuchMethod
is to throw a
noSuchMethodError
.
external Dynamic noSuchMethod(String name, List args);
const Object() #
Creates a new Object
instance.
Object
instances have no meaningful state, and are only useful
through their identity. An Object
instance is equal to itself
only.
const Object();
String toString() #
Returns a string representation of this object.
external String toString();