Uuid class final
Represents a RFC 4122 UUID. More generally, any 128-bit byte sequence can be represented by this class, but the semantics for the fields described in the may not apply for other variants.
Instances follow the rules for equivalence and ordering laid out by the RFC.
- Implemented types
- Available extensions
- Annotations
-
- @immutable
Constructors
- Uuid.fromBytes(Uint8List uuidBytes)
-
Construct a UUID from the given byte list.
factory
- Uuid.fromString(String uuidString)
-
Parses a UUID from the given String.
factory
- Uuid.v1({int? nodeId})
-
Generates a v1 (time-based) UUID.
factory
- Uuid.v4({Random? random})
-
Generates a v4 (random) UUID.
factory
- Uuid.v5({required Uuid namespace, required String name})
-
Generates a v5 (name-based with SHA-1) UUID.
factory
- Uuid.v6({int? nodeId})
-
Generates a v6 (time-based) UUID as defined by RFC 9562.
factory
Properties
- bytes → Uint8List
-
The raw bytes of this UUID. The returned Uint8List is unmodifiable and
contains exactly 16 bytes.
final
- clockSequence → int
-
The combined clock sequence. Note that the semantics of this value differ
between UUID versions. For v4 UUIDs in particular, this is a random value.
no setter
- clockSequenceHigh → int
-
The high field of the clock sequence without the variant.
no setter
- clockSequenceHighAndReserved → int
-
The high field of the clock sequence multiplexed with the variant.
no setter
- clockSequenceLow → int
-
The low field of the clock sequence.
no setter
- hashCode → int
-
The hash code for this object.
no setteroverride
- node → int
-
The spatially unique node identifier.
no setter
- parsedTime → DateTime
-
The parsed time as a usable DateTime object.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- time → int
-
The full "timestamp" of the UUID.
Note that parsedTime provides a parsed version of this timestamp,
albeit only for v1 and v6 UUIDs.
no setter
- timeHigh → int
-
The high field of the timestamp without the version number that was
originally multiplexed into timeHighAndVersion.
no setter
- timeHighAndVersion → int
-
The high field of the timestamp multiplexed with the version number,
i.e. octets 6-7. For v4 UUIDs, the timestamp will be random, but the
version bits will be 4 (
0b0100).no setter - timeLow → int
-
The low field of the timestamp, i.e. octets 0-3.
This field will be random for v4 UUIDs.
no setter
- timeMid → int
-
The mid field of the timestamp, i.e. octets 4-5.
This field will be random for v4 UUIDs.
no setter
- variant → UuidVariant
-
The UUID variant which determines the layout of the UUID.
no setter
- version → int
-
The version that was originally multiplexed in timeHighAndVersion.
no setter
Methods
-
compareTo(
Uuid other) → int -
Compares this object to another object.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
Returns the string representation of this UUID as specified by RFC 4122.
override
Operators
-
operator <(
Uuid other) → bool -
operator <=(
Uuid other) → bool -
operator ==(
Object other) → bool -
The equality operator.
override
-
operator >(
Uuid other) → bool -
operator >=(
Uuid other) → bool