Function std::intrinsics::discriminant_value
pub extern "rust-intrinsic" fn discriminant_value<T>( v: &T) -> <T as DiscriminantKind>::Discriminant
core_intrinsics)intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library
Returns the value of the discriminant for the variant in ‘v’; 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.
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/intrinsics/fn.discriminant_value.html