type-state-builder 0.5.1

Type-state builder pattern derive macro with compile-time safety and enhanced ergonomics.
Documentation 
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use type_state_builder::TypeStateBuilder;

#[derive(TypeStateBuilder)]
struct InvalidDefault {
    name: String,

    // This should be an error: invalid default expression
    #[builder(default = this_function_does_not_exist())]
    count: u32,
}

fn main() {}