Validator<T, U> class abstract

A validator has rules which a value will be validated against

T being the type of the value you are validating against.

U being the type of your negative feedback.

class NameValidator extends Validator<String, String> {

 @override
 List<ValidationRule<String, String>> get rules => [
       ValidationRule(
           ruler: (value) => value.isNotEmpty,
           negativeFeedback: "Name can't be empty."),
       ValidationRule(
           ruler: (value) => value.length <= 20,
           negativeFeedback: "Name can't be more than 20 characters.")
     ];
}

Constructors

Validator()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

rules → List<ValidationRule<T, U>>

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

validate(T value) → ValidationResult<U>

Operators

operator ==(Object other) → bool

The equality operator.

inherited