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ChangeIndication 

enum ChangeIndication

Describes the requirements for when to change the filter.

  • The filter condition is not specified.

    Declaration

    Swift

    case unspecified

  • ok

    The filter is in good condition, and no intervention is required.

    Declaration

    Swift

    case ok

  • The filter resource will be exhausted soon, and intervention will be required.

    Declaration

    Swift

    case warning

  • The filter resource is exhausted, and immediate intervention is required.

    Declaration

    Swift

    case critical

  • Creates a new instance with the specified raw value.

    If there is no value of the type that corresponds with the specified raw value, this initializer returns nil. For example:

    enum PaperSize: String {
    case A4, A5, Letter, Legal
}

print(PaperSize(rawValue: "Legal"))
// Prints "Optional("PaperSize.Legal")"

print(PaperSize(rawValue: "Tabloid"))
// Prints "nil"

    Declaration

    Swift

    init?(rawValue: UInt64)

    Parameters

    rawValue

    The raw value to use for the new instance.