Trait ValidateLength 

pub trait ValidateLength<T>
where
    T: PartialEq + PartialOrd,
{
    // Required method
    fn length(&self) -> Option<T>;

    // Provided method
    fn validate_length(
        &self,
        min: Option<T>,
        max: Option<T>,
        equal: Option<T>,
    ) -> bool { ... }
}

Validates the length of the value given. If the validator has equal set, it will ignore any min and max value.

If you apply it on String, don’t forget that the length can be different from the number of visual characters for Unicode

Required Methods

fn length(&self) -> Option<T>

Provided Methods

fn validate_length( &self, min: Option<T>, max: Option<T>, equal: Option<T>, ) -> bool

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl ValidateLength<u64> for &str

fn length(&self) -> Option<u64>

impl ValidateLength<u64> for String

fn length(&self) -> Option<u64>

impl ValidateLength<u64> for str

fn length(&self) -> Option<u64>

impl<K, V, S> ValidateLength<u64> for HashMap<K, V, S>

fn length(&self) -> Option<u64>

impl<K, V> ValidateLength<u64> for BTreeMap<K, V>

fn length(&self) -> Option<u64>

impl<T, S> ValidateLength<u64> for HashSet<T, S>

fn length(&self) -> Option<u64>

impl<T, const N: usize> ValidateLength<u64> for [T; N]

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for &T

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Arc<T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for BTreeSet<T>

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Box<T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Cow<'_, T>

where T: ToOwned + ?Sized, for<'a> &'a T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Option<T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Rc<T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Ref<'_, T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for RefMut<'_, T>

where T: ValidateLength<u64>,

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for Vec<T>

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for VecDeque<T>

fn length(&self) -> Option<u64>

impl<T> ValidateLength<u64> for [T]

fn length(&self) -> Option<u64>

Implementors