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[ExpressionLanguage] Add support for new number syntax #16593

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Mar 12, 2022
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[ExpressionLanguage] Add support for new number syntax #16593

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10 changes: 9 additions & 1 deletion components/expression_language/syntax.rst
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Expand Up @@ -14,13 +14,21 @@ Supported Literals
The component supports:

* **strings** - single and double quotes (e.g. ``'hello'``)
* **numbers** - e.g. ``103``
* **numbers** - integers (e.g. ``103``), decimals (e.g. ``9.95``), decimals
without leading zeros (e.g. ``.99``, equivalent to ``0.99``); all numbers
support optional underscores as separators to improve readability (e.g.
``1_000_000``, ``3.14159_26535``)
* **arrays** - using JSON-like notation (e.g. ``[1, 2]``)
* **hashes** - using JSON-like notation (e.g. ``{ foo: 'bar' }``)
* **booleans** - ``true`` and ``false``
* **null** - ``null``
* **exponential** - also known as scientific (e.g. ``1.99E+3`` or ``1e-2``)

.. versionadded:: 6.1

Support for decimals without leading zeros and underscore separators were
introduced in Symfony 6.1.

.. caution::

A backslash (``\``) must be escaped by 4 backslashes (``\\\\``) in a string
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