Mojo module
unsafe_union
Defines an untagged union type for C FFI interoperability.
This module provides a C-style union type that allows storing different types
in the same memory location without runtime type tracking. Unlike Variant,
UnsafeUnion does not maintain a discriminant field, making it suitable for:
- Interfacing with C libraries that use union types
- Low-level memory manipulation and type punning
- Situations where memory layout must exactly match C unions
Warning: Using UnsafeUnion is inherently unsafe. Reading a value as the wrong
type results in undefined behavior, just like in C. Prefer Variant for safe,
type-checked sum types.
Structs
-
UnsafeUnion: An untagged union that can store any one of its element types.
Was this page helpful?
Thank you! We'll create more content like this.
Thank you for helping us improve!