ValueComparisonRule class

Validation rule that compares value to a constant.

See IValidationRule

Example

var schema =  Schema()
    .withRule( ValueComparisonRule('EQ', 1));

schema.validate(1);          // Result: no errors
schema.validate(2);          // Result: 2 is not equal to 1

Implemented types

• IValidationRule

Constructors

ValueComparisonRule(String operation, dynamic value)

Creates a new validation rule and sets its values.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

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(String? path, Schema schema, dynamic value, List<ValidationResult> results) → void

Validates a given value against this rule.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited