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[Uid] Document NilUlid class #15528

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Jul 20, 2021
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[Uid] Document NilUlid class #15528

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11 changes: 11 additions & 0 deletions components/uid.rst
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Expand Up @@ -269,6 +269,17 @@ following methods to create a ``Ulid`` object from it::
The ``fromBinary()``, ``fromBase32()``, ``fromBase58()`` and ``fromRfc4122()``
methods were introduced in Symfony 5.3.

There's also a special ``NilUlid`` class to represent ULID ``null`` values::

use Symfony\Component\Uid\NilUlid;

$ulid = new NilUlid();
// equivalent to $ulid = new Ulid('00000000000000000000000000');

.. versionadded:: 5.4

The ``NilUlid`` class was introduced in Symfony 5.4.

Converting ULIDs
~~~~~~~~~~~~~~~~

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