Variant::arity

pub fn arity() -> int

use macro::{Variant};

Number of payload values (0 for a unit variant).

Called on a Variant value as value.arity(…).

Returns#

int

See also#

• Variant: One enum variant.
• Variant::is_unit
• Variant::is_tuple
• Variant::is_record
• Variant::has_attr
• Variant::attr_str