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arthurpaulino
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Mar 24, 2026
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| /// Get a mutable reference to the wrapped data if the external object is | ||
| /// exclusively owned (`m_rc == 1`, single-threaded mode). | ||
| /// | ||
| /// Returns `None` if the object is shared or multi-threaded. The `&mut self` | ||
| /// requirement ensures unique Rust access, while the `is_exclusive` check | ||
| /// ensures unique Lean access. | ||
| pub fn get_mut(&mut self) -> Option<&mut T> { | ||
| if unsafe { include::lean_is_exclusive(self.0.as_raw()) } { | ||
| Some(unsafe { &mut *include::lean_get_external_data(self.0.as_raw()).cast::<T>() }) | ||
| } else { | ||
| None | ||
| } | ||
| } |
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get_mutLeanExternalmethod to update the opaque type in place if not shared, otherwise copying on write