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type_id_vtable

std::intrinsics

Function type_id_vtable 

Source 
pub const fn type_id_vtable(
    _id: TypeId,
    _trait: TypeId,
) -> Option<DynMetadata<*const ()>>
🔬This is a nightly-only experimental API. (core_intrinsics)
This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).
Expand description

Check if a type represented by a TypeId implements a trait represented by a TypeId. It can only be called at compile time, the backends do not implement it. If it implements the trait the dyn metadata gets returned for vtable access.