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reorganize module

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Timur Gordon
2025-04-04 08:28:07 +02:00
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_archive/rhai_engine/rhaibook/engine/precedence.md Normal file
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Operator Precedence
===================
{{#include ../links.md}}
All operators in Rhai has a _precedence_ indicating how tightly they bind.
A higher precedence binds more tightly than a lower precedence, so `*` and `/` binds before `+` and `-` etc.
When registering a custom operator, the operator's precedence must also be provided.
The following _precedence table_ shows the built-in precedence of standard Rhai operators:
| Category | Operators | Binding | Precedence (0-255) |
| ------------------- | :--------------------------------------: | :-----: | :----------------: |
| Logic and bit masks | <code>\|\|</code>, <code>\|</code>, `^` | left | 30 |
| Logic and bit masks | `&&`, `&` | left | 60 |
| Comparisons | `==`, `!=` | left | 90 |
| Containment | [`in`] | left | 110 |
| Comparisons | `>`, `>=`, `<`, `<=` | left | 130 |
| Null-coalesce | `??` | left | 135 |
| Ranges | `..`, `..=` | left | 140 |
| Arithmetic | `+`, `-` | left | 150 |
| Arithmetic | `*`, `/`, `%` | left | 180 |
| Arithmetic | `**` | right | 190 |
| Bit-shifts | `<<`, `>>` | left | 210 |
| Unary operators | `+`, `-`, `!` | right | highest |
| Object field access | `.`, `?.` | right | highest |