Trait strum::EnumProperty
source · [−]pub trait EnumProperty {
fn get_str(&self, prop: &str) -> Option<&'static str>;
fn get_int(&self, _prop: &str) -> Option<usize> { ... }
fn get_bool(&self, _prop: &str) -> Option<bool> { ... }
}
Expand description
EnumProperty is a trait that makes it possible to store additional information
with enum variants. This trait is designed to be used with the macro of the same
name in the strum_macros
crate. Currently, the only string literals are supported
in attributes, the other methods will be implemented as additional attribute types
become stabilized.
Example
// You need to bring the type into scope to use it!!!
use strum::EnumProperty;
#[derive(PartialEq, Eq, Debug, EnumProperty)]
enum Class {
#[strum(props(Teacher="Ms.Frizzle", Room="201"))]
History,
#[strum(props(Teacher="Mr.Smith"))]
#[strum(props(Room="103"))]
Mathematics,
#[strum(props(Time="2:30"))]
Science,
}
let history = Class::History;
assert_eq!("Ms.Frizzle", history.get_str("Teacher").unwrap());