# Function std::intrinsics::type_id

const: unstable · source ·

    pub extern "rust-intrinsic" fn type_id<T>() -> u128where
        T: 'static + ?Sized,

🔬This is a nightly-only experimental API. (`core_intrinsics`)
Expand description

Gets an identifier which is globally unique to the specified type. This function will return the same value for a type regardless of whichever crate it is invoked in.

Note that, unlike most intrinsics, this is safe to call; it does not require an `unsafe` block. Therefore, implementations must not require the user to uphold any safety invariants.

The stabilized version of this intrinsic is `core::any::TypeId::of`.