ConditionedConstraint
public class ConditionedConstraint<T> : PredicateConstraint<T>
A data type that links a Predicate
to an Error
that describes why the predicate evaluation has failed.
-
The number of conditions that must ….
Declaration
Swift
public var conditionsCount: Int { get }
-
Create a new
ConditionedConstraint
instanceDeclaration
Swift
public override init<P>(predicate: P, error: @escaping (T) -> Error) where T == P.InputType, P : Predicate
Parameters
predicate
A
Predicate
to describes the evaluation rule.error
A generic closure that dynamically builds an
Error
to describe why the evaluation has failed. -
Add a condition
Constraint
.Declaration
Swift
public func add<C>(condition: C) where T == C.InputType, C : Constraint
Parameters
constraint
-
Add a predefined list of conditional
Constraints
.Declaration
Swift
public func add<C>(conditions: [C]) where T == C.InputType, C : Constraint
Parameters
constraints
[Constraint]
-
A an unsized list of conditional
Constraints
.Declaration
Swift
public func add<C>(conditions: C...) where T == C.InputType, C : Constraint
Parameters
constraints
[Constraint]
-
Evaluates the input on the
Predicate
.Declaration
Swift
public override func evaluate(with input: T) -> ValidationResult
Parameters
input
The input to be validated.
Return Value
.success
if the input is valid,.failure
containing theSummary
of the failingConstraint
s otherwise.