Trait Rule 

pub trait Rule<T: ?Sized> {
    // Required method
    fn validate(&self, value: &T) -> Result<(), FieldError>;
}

A validation rule trait.

Required Methods

fn validate(&self, value: &T) -> Result<(), FieldError>

Validate the value.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors