docs/type_system/qualifiers.md


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# Qualifiers

---

Only one can be applied to a type at a time

# Empty

Specifies that a container template can be NULL

```text
# EMPTY {
    .some { args; ... }[args]
    .none { ... }
}

? EMPTY { args; .... }[args]
```

## \`nil

# Const

# Ref