type-state-builder 0.5.1

Type-state builder pattern derive macro with compile-time safety and enhanced ergonomics.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13

use type_state_builder::TypeStateBuilder;

#[derive(TypeStateBuilder)]
struct DuplicateRequired {
    // This should be an error: duplicate required attributes
    #[builder(required)]
    #[builder(required)]
    name: String,

    email: String,
}

fn main() {}