pub const extern "rust-intrinsic" fn discriminant_value<T>(
v: &T,
) -> <T as DiscriminantKind>::Discriminant
๐ฌThis is a nightly-only experimental API. (
core_intrinsics
)Expand description
Returns the value of the discriminant for the variant in โvโ;
if T
has no discriminant, returns 0
.
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::mem::discriminant
.