Identifier class interface

An interface for an identifier of something, represented as String, int or BigInt.

As this class is defined with the class modifier interface, the class can only be implemented, but not extended. This class also provides a default implementation that allows constructing instaces of Identifier.

Implemented types

• StringOrInteger

Annotations

• @immutable

Constructors

Identifier.from(Object id)

An identifier from id that MUST be either String, int or BigInt.

const

Identifier.fromBigInt(BigInt id)

An identifier from id of the type BigInt.

const

Identifier.fromInt(int id)

An identifier from id of the type int.

const

Identifier.fromString(String id)

An identifier from id of the type String.

const

Properties

hashCode → int

The hash code for this object.

no setter, override

isBigInt → bool

True if this value is stored as BigInt.

no setter, override

isInt → bool

True if this value is stored as int.

no setter, override

isInteger → bool

True if this value is stored as an integer (int or BigInt) value.

no setter, override

isString → bool

True if this value is stored as a String.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

asBigInt() → BigInt

Returns this value as a BigInt value.

override

asInt() → int

Returns this value as a int value.

override

asString() → String

Returns this value as a String value.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

tryAsBigInt() → BigInt?

This value as a BigInt value or null if cannot be converted to BigInt.

override

tryAsInt() → int?

This value as a int value or null if cannot be converted to int.

override

tryAsString() → String?

This value as a String value or null if cannot be converted to String.

override

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Methods

idOrNull(Object? id) → Identifier?

Prepares a nullable Identifier instance of the given id.