Priority

Returns a Boolean value indicating whether the value of the first argument is less than that of the second argument.

This function is the only requirement of the Comparable protocol. The remainder of the relational operator functions are implemented by the standard library for any type that conforms to Comparable.

High priority indicates listener is called before .normal and .low priority listeners.

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"

Low priority indicates listener is called after .normal and .high priority listeners.

Normal priority indicates listener is called after .high priority listeners but before .low priority listeners.