Mojo function
trait_downcast
trait_downcast[T: AnyTrivialRegType, //, Trait: AnyTrait[AnyType]](var src: T) -> downcast(:type T)
Downcast a parameter input type T and rebind the type such that the return value's type conforms the provided Trait. If T, after resolving to a concrete type, does not actually conform to Trait, a compilation error would occur.
Parameters:
- T (
AnyTrivialRegType): The original type. - Trait (
AnyTrait): The trait to downcast into.
Args:
- src (
T): The value to downcast.
Returns:
downcast(:type T): The downcasted value.
trait_downcast[T: AnyType, //, Trait: AnyTrait[AnyType]](ref src: T) -> ref [src] downcast(:trait<_stdlib::_builtin::_anytype::_AnyType> T)
Downcast a parameter input type T and rebind the type such that the return value's type conforms the provided Trait. If T, after resolving to a concrete type, does not actually conform to Trait, a compilation error would occur.
Parameters:
- T (
AnyType): The original type. - Trait (
AnyTrait): The trait to downcast into.
Args:
- src (
T): The value to downcast.
Returns:
ref: The downcasted value.
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