RangePredicate

public struct RangePredicate<T> : Predicate where T : Comparable

The RangePredicate struct is used to evaluate whether a given input is inside a given range.

let drinkingAgeLimit = RangePredicate(min: 21)
let isAllowed = drinkingAgeLimit.evaluate(with: 18)
  • Declaration

    Swift

    public typealias InputType = T
  • Returns a new RangePredicate instance.

    let drinkingAgeLimit = RangePredicate(min: 21)
    let isAllowed = drinkingAgeLimit.evaluate(with: 18)
    

    Declaration

    Swift

    public init(min: T? = nil, max: T? = nil)

    Parameters

    min

    The lower bound of the range.

    max

    The upper bound of the range.

  • Returns a new RangePredicate instance.

    let predicate = RangePredicate(21...90)
    let isAllowed = predicate.evaluate(with: 25)
    

    Declaration

    Swift

    public init(_ range: ClosedRange<T>)

    Parameters

    range

    A ClosedRange that defines the lower and upper bounds of the range.

  • Returns a Boolean value that indicates whether a given input is inside the given range bounds.

    Declaration

    Swift

    public func evaluate(with input: T) -> Bool

    Parameters

    input

    The input against which to evaluate the receiver.

    Return Value

    true if input is between the range bounds, otherwise false.

Available where T: Strideable, T.Stride: SignedInteger

  • Returns a new RangePredicate instance.

    let predicate = RangePredicate(21..<91)
    let isAllowed = predicate.evaluate(with: 25)
    

    Declaration

    Swift

    public init(_ range: Range<T>)

    Parameters

    range

    A Range that defines the lower and upper bounds of the range.