variant_count in std::intrinsics - Rust
Description: Returns the number of variants of the type `T` cast to a `usize`; if `T` has no variants, returns `0`. Uninhabited variants will be counted.
Keywords: rust, rustlang, rust-lang, variant_count

# Function std::intrinsics::variant_count
[−][src]

    pub const extern "rust-intrinsic" fn variant_count<T>() -> usize

🔬 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

Returns the number of variants of the type `T` cast to a `usize`; if `T` has no variants, returns `0`. Uninhabited variants will be counted.

The to-be-stabilized version of this intrinsic is `mem::variant_count`.