Trait type_rules::Validator

source · [−]
pub trait Validator {
    fn check_validity(&self) -> Result<(), String>;
}
Expand description

Check the validity of a type

By implementing Validator for a type, you define the rules to check is validity

Can be derived with the derive feature

Example

Basic usage:

ⓘ
use type_rules::prelude::*;

#[derive(Validator)]
struct NotEmptyString(#[rule(MinLength(1))] String);

let valid = NotEmptyString(String::from("Not empty"));
let not_valid = NotEmptyString(String::from(""));

valid.check_validity().unwrap(); // OK
not_valid.check_validity().unwrap(); // Value is too short

Required Methods

Implementors