Valid<T extends Object?> class final

Represents a successful validation with the validated value.

A Valid contains the original value that passed all validation checks. You can continue chaining additional validations on a Valid result using the ValidatedOps.check extension method. The value is preserved through the entire validation chain.

Construct Valid results using Validated.valid factory method or the check function/ValidatedOps.check extension.

Example:

// Create a valid result
final result = Validated.valid('valid@email.com');

// Continue chaining validations
final validated = result
  .check((email) => email.contains('@'), error: 'Invalid format')
  .check((email) => !email.startsWith('.'), error: 'Cannot start with period');
Inheritance
Available extensions
Annotations
  • @experimental
  • @immutable

Properties

hashCode → int
The hash code for this object.
no setteroverride
isValid → bool
Returns true if this is a Valid result, false if Invalid.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value → T
The value that passed all validation checks.
final

Methods

and(Validated<T> other) → Validated<T>
Combines two validation results, merging their errors.
inherited
asResult() → Result<T, Set<String>>
Converts this validation result to a Result type.
inherited
check(bool rule(T), {required String error}) → Validated<T>

Available on Validated<T>, provided by the ValidatedOps extension

Applies an additional validation rule to this result.
getErrors() → Set<String>?
Gets errors if Invalid, null if Valid.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited
unwrapOrNull() → T?
Extracts the value if Valid, or returns null if Invalid.
inherited

Operators

operator &(Validated<T> other) → Validated<T>
Combines two validation results, merging their errors.
inherited
operator ==(Object other) → bool
The equality operator.
override