# Function core::intrinsics::type_id
[−][src]

    pub extern "rust-intrinsic" fn type_id<T: ?Sized + 'static>() -> u64

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

intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

This is supported on non-crate feature `miri-test-libstd` or `test` or `doctest` only.
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`.