Macro variante::variant

macro_rules! variant {
    ( $variant:ident @ $($enumeration:ident)::+ $(<$($generics:ty),+>)? ) => { ... };
}

Checks for the presence of a variant on a enum at compile-time and returns the field’s name as a &'static str.

Invoked as variant!(Variant @ Enum), this macro verifies that a variant named Variant exists on the type Enum, and is visible at the point of invocation. It then stringifies the variant name, evaluating to "Variant".

Refer to the crate-level documentation for more information.