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docs: update tutorial on operators and precedence (#830)

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immerrr again
2025-10-31 09:34:05 +08:00
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docs/source/tutorials/operators.md
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@@ -5,17 +5,18 @@ title: Operators
LiquidJS operators are very simple and different. There're 2 types of operators supported:
* Comparison operators: `==`, `!=`, `>`, `<`, `>=`, `<=`
* Logic operators: `or`, `and`, `contains`
* Logic operators: `not`, `or`, `and`, `contains`
Thus numerical operators are not supported and you cannot even plus two numbers like this `{% raw %}{{a + b}}{% endraw %}`, instead we need a filter `{% raw %}{{ a | plus: b}}{% endraw %}`. Actually `+` is a valid variable name in LiquidJS.
## Precedence
1. Comparison operators. All comparison operations have the same precedence and higher than logic operators.
2. Logic operators. All logic operators have the same precedence.
1. Comparison operators, and `contains`. All comparison operators alongside `contains` have the same (highest) precedence.
2. `not` operator. It has slightly more precedence than `or` and `and`.
3. `or` and `and` operators. These logic operators have the same (lowest) precedence.
## Associativity
Logic operators are evaluated from right to left, see [shopify docs][operator-order].
[operator-order]: https://help.shopify.com/en/themes/liquid/basics/operators#order-of-operations
[operator-order]: https://shopify.dev/docs/api/liquid/basics#order-of-operations